Valid IP Addresses and Classifications

question

Which of the following is a vaild IP (version 4) address? (Select 2)

answer

2.2.2.2 172.16.1.26

question

Consider the following IP addresses .

answer

Class A, B, B, C

question

Which three of the following are Class B addresses?

answer

129.0.0.0 190.65.2.0 132.12.0.0

question

Which of the following IP addresses have a default subnet mask of 255.255.0.0?

answer

129.0.0.1 191.168.2.15 168.16.5.1

question

Which of the following devices does NOT segment the network?

answer

Hub

question

What is the default subnet mask for the IP address 203.111.3.3?

answer

255.255.255.0

question

A host on the network has an IP address of 129.11.99.78 using the default subnet mask. How would you identify the address and mask using CIDR notation?

answer

129.11.99.78/16

question

You manage a subnet that uses the following subnet address: 198.162.1.0/23. Which of the following best describes how addressing is configured for the subnet?

answer

Supernetting.

question

You manage a server that uses an IP address of 192.168.255.188 with a mask of 255.255.0.0 Which of the following describes the address type?

answer

Classless

question

Which organization is responsible for allocating public IP addresses?

answer

IANA

question

Which of the following best describes the purpose of using subnets?

answer

Subnets divide an IP address into multiple addresses.

question

You've decided to use a subnet mask of 255.255.192.0 on the 172.17.0.0 network to create four separate subnets. Which network IDs will be assigned to these subnets in this configuration? (selec two)

answer

172.17/128.0 AND 172.17.0.0

question

You have a small network connected to the Internet as shown in the Exhibit. You need to configure the default gateway address on Wrk1 so that it can communicate with the hosts on the Internet. Which address would you use for the default gateway address?

answer

The IP address assigned to Fa0/0 on Router 1

question

You have a small network with a single subnet connected to the Internet as shown in the Exhibit. The router has been assigned the two addresses shown. You need to manually configure the workstation to connect to the network. The workstation should use RouterA as the default gateway, and DNS1 as the DNS server address. From the drop-down lists, select the appropriate paramteres to configure the workstation's TCP/IP settings.

answer

IP Address: 192.168.12.46 Subnet Mask: 255.255.255.240 Default Gateway: 192.168.12.34 DNS Server: 192.162.1.22

question

You manage a network with a single switch. On each switch port, a hub connects multiple devices to the switch. which condition are you most likely to experience on the network ?

answer

collisions

question

select the statement that best describes a broadcast storm.

answer

A Broadcast storm occurs when there are so many broadcast messages on the network that they approach or exceed the network bandwidth..

question

Which of the following solutions would you implement to eliminate switching loops?

answer

spanning tree

question

You manage a network that uses a single switch. All ports within your buildings connect through he single switch . Which feature should you implement?

answer

VLANs

question

You manage a network that uses multiple switches. You want to provide multiple paths between switches so that if one link goes down, an alternate path is available. Which feature should your switch support?

answer

spanning tree

question

You run a small network for your business that has a single router connected to the internet and a single switch. You keep sensitive doc. What should you use for this situation?

answer

VLAN

question

You manage a single subnet with three switches. The switches are connected to provide redundant paths between the switches. Which feature prevents switching loops and ensures there is only a single active patch between any two switches?

answer

Spanning tree

question

Which feature prevents switching loops and ensures there is only a single active path between any two switches?

answer

spanning trees

question

A user reports that network access from her workstation is very slow. The problem does not seem to be affecting any other users. Which of the following conditions is the most likely cause?

answer

Duplex mismatch

question

You manage a local area network with several switches. A new employee has started today so you connect her workstation to a switch port. Which of the following is the most likely cause of the problem?

answer

Incorrect VLAN assignment

question

You manage a network with multiple switches. You find that your switches are experiencing heavy broadcast storms. Which of the following will help reduce the effects of a broadcast storm?

answer

Enable spanning tree on the switches

question

Which of the following solutions would you implement to eliminate switching loops?

answer

spanning tree

question

While viewing the status of the interfaces on a Cisco switch, you see abnormally large of oversized ethernet frames being received on one interface. This interface is connected to a workstation located on the 2nd floor. What could be causing this to happen?

answer

The workstation's network board is jabbering

question

The network board in a workstation is currently configured as follows:

answer

show running-config interface show interface

question

Which of the following features dynamically places switch ports in blocking or forwarding states?

answer

Spanning tree

question

You manage a network that uses multiple switches. You want to provide muliple paths between switches so that if one link goes down, an alternate path is available. Which feature should your switch support?

answer

Spanning tree

question

What problem does the Spanning Tree protocol prevent?

answer

Switching loops from developing when redundant paths are implemented between switches.

question

Which of the following are advantages of using the Spanning Tree Protocol (STP) in network segmented bridges?

answer

Prevents message loops from forming Identifies the optimal path between network devices. Lets you provide redundancy by using more then one connection between devices, making your network more reliable.

question

Which statements accurately describes port states of both bridges and switches?

answer

Ports in a blocked state still receive BPDUs In the learning state the MAC address table can be populated, but frames not forwarded.

question

A switch running STP is a backup bridge. What state is it in?

answer

Blocking

question

Switches running the STP are in the process of exchanging BPDUs and defining their roles. In what state are the switches?

answer

listening

question

A switch running STP is in a learning state. A message destined for a different network segment arrives at the switch. Which of the following best describes what the switch will do?

answer

It uses the source MAC address and network segment information to build its bridge database, but does not forward the message

question

A switch running STP is in the listening state. A message destined for a different network segment arrives at the switch. Which of the following best describes what the switch will do?

answer

It does not record the address or segment information. It does not forward the message

question

You have just connected four switches as shown in the Exhibit. Assuming the default switch configuration, which switch will become the root bridge?

answer

B

question

You have two switches connected as shown in the Exhibit. You would like to configure rapid spanning tree on switch A. On which ports would you use portfast command?

answer

Fa0/1 and Fa0/2

question

You have just connected four switches as shown in the Exhibit. Assuming the default switch configuration, how can your force Switch C to become a root bridge?

answer

Configure a priority number of 4096 for switch C

question

You have three switches configured as shown in the Exhibit. How can you guarantee that switch C becomes the root bridge?

answer

Configure switch C with a lower priority value

question

You need to configure spanning tree on a Cisco switch. You'd like to use a protocol that confirms to the 802.1w standards. Which protocol should you use?

answer

Rapid PVST+

question

Match the Etherchannel protocol on the left with its characteristics on the right.

answer

Desirable mode places the port in a negotiating state. Port Aggregation Protocol (PAgP) Based on the 802.3ad standard link Aggregation control protocol(LACP) Passive mode places the port into a passive negotiation state. link aggregation control protocol (LACP) Auto mode places the port into a passive negotiating state. Port Aggregation Protocol (PAgP) Active more places the port in a negotiating state. link Aggregation control protocol(LACP)

question

You manage a single subnet with three switches. The switches are connected to provide redundant paths between the switches. Which feature allows the switches to pass VLAN traffic between the switches?

answer

Trunking

question

You manage a network with two switches. The switches are connected together through their Gigabit Ethernet uplink ports. You define VLAN 1 and VLAN 2 on each switch. A device on the first switch in VLAN 1 needs to communicate with a device on the second switch also in VLAN 1. What should you configure to allow communication between these two devices through the switches?

answer

Trunking

question

When configuring VLANs on a switch, what type of switch ports are members of all VLANs defined on the switch?

answer

Trunk Ports

question

Computers A and B are on the same VLAN and are separated by two switches, as shown in the exhibit. Computer A sends a Fram to Computer B. Which of the following best describes the composition of the frame as it travels from A to B?

answer

Computer A sends a normal frame. The first switch appends a VLAN ID to the frame. The second switch removes the VLAN ID before forwarding it to Computer B.

question

Which of the following statements accurately describes a VLAN ID?

answer

Switches append a VLAN ID to the header of each frame to identify the virtual network to which it belongs.

question

Which of the following are reasons to configure VLAN's on a switch as opposed to using switches without VLANs?

answer

Increased Security Increased Number of broadcast domains

question

Which of the following benefits apply only to creating VLANs with switches and not to segmenting the network with regular switches?

answer

You can create multiple broadcast domains

question

you have two switches connected together as shown in the following diagram. How many broadcast domains are there in the network?

answer

2

question

Which of the following statements describe how VLANs effect broadcast traffic within an internetwork?

answer

Devices on the same VLAN have the same subnet address Broadcast traffic is transmitted only within a VLAN

question

Which of the following are true using multiple VLANS on a single switch? select two

answer

The number of broadcast domains increases The number of collision domains remain the same

question

A virtual LAN can be created using which of the following?

answer

Switch

question

You want to reduce collisions by creating separate collision domains and virtual LANs. Which of the following devices should you choose?

answer

Switch

question

Which of the following best describes the concept of VLAN?

answer

Devices on the same network logically grouped as if they were on separate networks

question

When configuring VLANs on a switch, what is used to identify VLAN membership of a device?

answer

Switch port

question

You manage a network with two switches. The switches are connected together through their Gigabit Ethernet uplink ports. You define VLAN 1 and VLAn 2 on each switch. A device on the first switch in VLAN 1 needs to be communicate with a device on the same switch is VLAN 2. What should you configure so that the two devices can communicate?

answer

Routing

question

You need to keep users in all other departments from accessing the servers used by the finance department. Which of the following technologies should you use to logically isolate the network?

answer

VLANs

question

Consider the network shown in the exhibit. You have been experiencing intermittent connectivity issues with switch2. To check the status of the interfaces you run the following commands: What is the issue with this network?

answer

The device connected to the Fa0/1 interface has auto-negotiation disabled.

question

A workstation is connected to a switch on the Gi0/2 interface using a straight through cable. The Ethernet interface in the workstation has been manually configured to use a 100 Mbps link speed and full duplexing. Which of the following are true in this scenario? (Select three.)

answer

If the link speed is 1000 Mbps or faster, full-duplex is used. If the link speed is 10 Mbps or 100 Mbps, half-duplex is used. The switch attempts to sense the link speed. If it can't, the slowest link speed supported on the interface is selected.

question

You need to configure the FastEthernet 0/1 interface on a switch to automatically detect the appropriate link speed and duplex setting by negotiating with the device connected to the other end of the link. Drag the command on the left to the appropriate configuration step on the right to accomplish this. Not all of the commands may be required.

answer

Enter global configuration mode: conf t Enter interface configuration mode: int fa0/1 Set the speed of the interface: speed auto Set the duplex setting for the interface: duplex auto

question

You need to disable the FastEthernet 0/0 interface on a switch. Drag the command on the left to the appropriate configuration step on the right to accomplish this. Not all of the commands may be required.

answer

Enter global configuration mode: conf t Enter interface configuration mode: int fa0/0 Disable the interface: shutdown Verify the interface is disabled: show ip interface brief

question

The FastEthernet 0/0 interface on a switch is currently disabled. You need to enable it so a workstation can be connected to it. Drag the command on the left to the appropriate configuration step on the right to accomplish this. Not all of the commands may be required.

answer

Enter global configuration mode: conf t Enter interface configuration mode: int fa0/0 Verify the interface is disabled: show interface status Enable the interface: no shut

question

A switch receives a frame addressed to the MAC address FF:FF:FF:FF:FF:FF. What will the switch do with the frame?

answer

Send it out all ports except for the port it was received on

question

Which command would you use on a switch to enable management from a remote network?

answer

IP default-gateway 192.168.10.185

question

What does the ip address dhcp command all you to do?

answer

Configures the switch to obtain an IP address from a DHCP server

question

You are configuring a switch so that you can manage it via PuTTY from the same network segment as the switch. On the switch, you enter the following commands. Switch# config terminal switch(config)#interface Evian 1 switch(config-if)#ip- address 192.168.1.10 225.225.225.0 will this configuration work?

answer

No, the no shutdown command needs to be entered

question

Match each switch management method on left with its corresponding characteristics on the right. Each method may be used once, more than once, or not at all.

answer

Competes with normal network traffic for bandwidth. In-band Management Uses a dedicated communication channel. Out-of-band management Must be encrypted to protect communications from sniffing. In-band management Does not compete with normal network traffic for bandwidth. Out-of-band management Affected by network outages. In-band management

question

Match each switch management method on left with its corresponding characteristics on the right. Each method may be used once, more than once, or not at all.

answer

Commonly sold at retail stores Unmanaged switch Provide port security features. Managed switch Support VLANs Managed switch Provide very few configuration options Unmanaged switch Can be configured over a network connection Managed switch Can be configured over a dedicated communication channel Managed switch

question

You reconfiguring PuTTY to be used to access the CLI of Cisco switch Which of the following configuration values would PuTTY from connection? (Select two.)

answer

4600 baud Flow contro = RTS/CTS

question

Match the Cisco device password type on the left with its function on the right

answer

Controls the ability to log on through a LAN or WAN interface configured on the device VTY Controls the ability to switch configuration modes EXEC Controls the ability to connect to the device using a direct connection Console

question

A router is configured with the login, no password condition for console access. Which of the following statements is true about access via a Telnet or SSH session?

answer

Access is denied

question

which condition are you most likely to experience on the network ?

answer

collisions

question

You manage a network that uses a single switch. All ports within your buildings connect through he single switch . Which feature should you implement?

answer

VLANs

question

select the statement that best describes a broadcast storm.

answer

A Broadcast storm occurs when there are so many broadcast messages on the network that they approach or exceed the network bandwidth..

question

Which of the following solutions would you implement to eliminate switching loops?

answer

spanning tree

question

Which feature should your switch support?

answer

spanning tree

question

What should you use for this situation?

answer

VLAN

question

Which feature prevents switching loops and ensures there is only a single active path between any two switches?

answer

spanning trees

question

Which of the following conditions is the most likely cause?

answer

Duplex mismatch

question

Which of the following is the most likely cause of the problem?

answer

Incorrect VLAN assignment

question

Which of the following will help reduce the effects of a broadcast storm?

answer

Enable spanning tree on the switches

question

Which of the following solutions would you implement to eliminate switching loops?

answer

spanning tree

question

What could be causing this to happen?

answer

The workstation's network board is jabbering

question

The network board in a workstation is currently configured as follows:

answer

show running-config interface show interface

question

You manage a network with a single switch. On each switch port, a hub connects multiple devices to the switch. which condition are you most likely to experience on the network ?

answer

collisions

question

select the statement that best describes a broadcast storm.

answer

A Broadcast storm occurs when there are so many broadcast messages on the network that they approach or exceed the network bandwidth..

question

Which of the following solutions would you implement to eliminate switching loops?

answer

spanning tree

question

You manage a network that uses a single switch. All ports within your buildings connect through he single switch . Which feature should you implement?

answer

VLANs

question

You manage a network that uses multiple switches. You want to provide multiple paths between switches so that if one link goes down, an alternate path is available. Which feature should your switch support?

answer

spanning tree

question

You run a small network for your business that has a single router connected to the internet and a single switch. You keep sensitive doc. What should you use for this situation?

answer

VLAN

question

You manage a single subnet with three switches. The switches are connected to provide redundant paths between the switches. Which feature prevents switching loops and ensures there is only a single active patch between any two switches?

answer

Spanning tree

question

Which feature prevents switching loops and ensures there is only a single active path between any two switches?

answer

spanning trees

question

A user reports that network access from her workstation is very slow. The problem does not seem to be affecting any other users. Which of the following conditions is the most likely cause?

answer

Duplex mismatch

question

You manage a local area network with several switches. A new employee has started today so you connect her workstation to a switch port. Which of the following is the most likely cause of the problem?

answer

Incorrect VLAN assignment

question

You manage a network with multiple switches. You find that your switches are experiencing heavy broadcast storms. Which of the following will help reduce the effects of a broadcast storm?

answer

Enable spanning tree on the switches

question

Which of the following solutions would you implement to eliminate switching loops?

answer

spanning tree

question

While viewing the status of the interfaces on a Cisco switch, you see abnormally large of oversized ethernet frames being received on one interface. This interface is connected to a workstation located on the 2nd floor. What could be causing this to happen?

answer

The workstation's network board is jabbering

question

The network board in a workstation is currently configured as follows:

answer

show running-config interface show interface

question

You need to perform a reverse lookup of the 10.0.0.1 IP address. Which command can you use to accomplish this? (Select two. Each response is a complete solution.) A. nbtstat -a 10.0.0.3 B. ipconfig /dnslookup 10.0.0.3 C. dig -x 10.0.0.3 D. nslookup 10.0.0.3 E. arp 10.0.0.3

answer

dig -x 10.0.0.3 nslookup 10.0.0.3

question

Mary calls to tell you that she can't connect to an intranet server called WebSrvl. From her computer, you ping the server's IP address. The ping test is successful. Which tool would you use on her workstation next to troubleshoot the problem? A. tracert B. nslookup C. nbtstat D. netstat E. arp

answer

nslookup

question

You are troubleshooting a network connectivity issue on a Unix system. You are able to connect to remote systems by using their IP address, but unable to connect using the hostname. You check the TCP/IP configuration, and note that a DNS server IP address is configured. You decide to run some manual resolution queries to ensure that the communication between the Unix system and the DNS server are working correctly. Which utilities can you use to do this? (Choose two .) A. traceroute B. tracert C. dig D. nslookup

answer

dig nslookup

question

Examine the following output : Server : helicuplar.xct.takro.net Address : 209.53.4.130 Name : westsim.com Address : 64.78.193.84 Which of the following utilities produced this output? A. nslookup B. tracert C. ipconfig D. netstat

answer

nslookup

question

Consider the following output from a dig command run on a Linux system. ; <> DiG 8 .2 <> westsimlll.com ;;res options :init recurs defnam dnsrch ;;got answer : ;;->>HEADER<< -opcode :QUERY , status : NOERROR , id :4 ;;flags : qr rd ra ; QUERY :l , ANSWER :l , AUTHORITY :2, ADDITIONAL :0 ;;QUERY SECTION : ;; westsimlll.com , type= A , class= IN ;;ANSWER SECTION : westsimlll .com . 7h33m IN A 76 .141 .43 .129 ;;AUTHORITY SECTION : westsimlll .com . 7h33m INNS dnsl .deriatctlll .com. westsimlll.com. 7h33m INNS dns2.de riatct222.com . ;;Total query time : 78 msec ;;FROM: localhost .localdomain to SERVER :default -- 202 .64 .49 .150 ;;WHEN: Tue Feb 16 23 :21 :24 2005 ;;MSG SIZE sent : 30 rcvd :l03 which of the following utilities produced this output?

answer

Dig

question

Consider the following output from a dig command run on a Linux system. ; <> DiG 8 .2 <> westsimlll.com ;;res options :init recurs defnam dnsrch ;;got answer : ;;->>HEADER<< -opcode :QUERY , status : NOERROR , id :4 ;;flags : qr rd ra ; QUERY :l , ANSWER :l , AUTHORITY :2, ADDITIONAL :0 ;;QUERY SECTION : ;; westsimlll.com , type= A , class= IN ;;ANSWER SECTION : westsimlll .com . 7h33m IN A 76 .141 .43 .129 ;;AUTHORITY SECTION : westsimlll .com . 7h33m INNS dnsl .deriatctlll .com. westsimlll.com. 7h33m INNS dns2.de riatct222.com . ;;Total query time : 78 msec ;;FROM: localhost .localdomain to SERVER :default -- 202 .64 .49 .150 ;;WHEN: Tue Feb 16 23 :21 :24 2005 ;;MSG SIZE sent : 30 rcvd :l03 What is the IP address of the DNS server that performed this name resolution? A. 202.64.49.150 B. 76.141.43.129 C. 192.168.1.100 D. 16.23.21.24

answer

202.64.49.150

question

A user reports that he can't browse to a specific Web site on the Internet. From his computer, you find that a ping test to the Web server succeeds. A trace route test shows that 17 hops to the destination Web server. What is the most likely cause of the problem?

answer

incorrect DNS server address

question

Match each switch management method on left with its corresponding characteristics on the right. Each method may be used once, more than once, or not at all.

answer

Competes with normal network traffic for bandwidth. In-band Management Uses a dedicated communication channel. Out-of-band management Does not compete with normal network traffic for bandwidth. Out-of-band management Affected by network outages. In-band management

question

Match each switch management method on left with its corresponding characteristics on the right. Each method may be used once, more than once, or not at all.

answer

Commonly sold at retail stores Unmanaged switch Provide port security features. Managed switch Support VLANs Managed switch Provide very few configuration options Unmanaged switch Can be configured over a network connection Managed switch Can be configured over a dedicated communication channel Managed switch

question

You reconfiguring PuTTY to be used to access the CLI of Cisco switch Which of the following configuration values would PuTTY from connection? (Select two.)

answer

4600 baud Flow contro = RTS/CTS

question

Match the Cisco device password type on the left with its function on the right

answer

Controls the ability to log on through a LAN or WAN interface configured on the device VTY Controls the ability to switch configuration modes EXEC Controls the ability to connect to the device using a direct connection Console

question

A router is configured with the login, no password condition for console access. Which of the following statements is true about access via a Telnet or SSH session?

answer

Access is denied

question

Which of the following connectivity hardware is used to create a VLAN?

answer

Switch.

question

You run a small network for your business that has a single router connected to the Internet and a single switch. You keep sensitive documents on a computer that you would like to keep isolated from other computers on the network. Other hosts on the network should not be able to communicate with this computer through the switch, but you still need to access the network through the computer. What should you use for this situation?

answer

VLAN

question

You manage a network that uses switches. In the lobby of your building are three RJ-45 ports connected to a switch. You want to make sure that visitors cannot plug their computers to the free network and connect to the network. However, employees who plug into those same jacks should be able to connect to the network. What feature should you configure?

answer

Port authentication.

question

You manage a network that uses a single switch. All ports within your building connect through the single switch. In the lobby of your building are three RJ-45 ports connected to a switch. You want to allow visitors to plug into these ports to gain Internet access, but they should not have access to any other devices on your private network. Employees connected throughout the rest of your building should have both private and Internet access. Which feature should you implement?

answer

VLANs.

question

Which type of device is required to implement port authentication throughout a switch?

answer

RADIUS server.

question

Which of the following best describes the concept of virtual LAN?

answer

Devices on the same network logically grouped as if they were on separate networks.

question

You manage a single subnet with three switches. The switches are connected to provide redundant paths between the switches. Which feature allows the switches to pass VLAN traffic between the switches?

answer

Trunking.

question

You manage a network with two switches. The switches are connected together through their Gigabit Ethernet uplink ports. You define VLAN 1 and VLAN 2 on each switch. A device on the first switch in VLAN 1 needs to communicate with a device on the second switch also in VLAN 1. What should you configure to allow communication between these two devices through the switches?

answer

Trunking.

question

Your company is a small start-up company that has leased office space in a building shared by other businesses. All businesses share a common network infrastructure. A single switch connects all devices in the building to the router that provides Internet access. You would like to make sure that your computers are isolated from computers used by other companies. Which feature should you request to have implemented?

answer

VLAN.

question

You manage a network with two switches. The switches are connected together through their Gigabit Ethernet uplink ports. You define VLAN 1 and VLAN 2 on each switch. A device on the first switch in VLAN 1 needs to communicate with a device on the same switch which is in VLAN 2. What should you configure so that the two devices can communicate?q

answer

Routing.

question

When configuring VLANs on a switch, what is used to identify VLAN membership of a device?

answer

Switch port.

question

Which switch features are typically used with VoIP

answer

VLAN. PoE.

question

When configuring VLANs on a switch, what type of switch ports are members of all VLANs defined on the switch?

answer

Trunk ports.

question

Which of the following do switches and wireless access points use to control access through the device?

answer

MAC filtering.

question

Which of the following are reasons to configure VLANs on a switch as opposed to using switches without VLANs? (Select two.)

answer

Increased number of broadcast domains. Increased security.

question

You have two switches connected together as shown in the following diagram. How many broadcast domains are there in the network shown?

answer

2

question

Which of the following benefits apply only to creating VLANs with switches and not to segmenting the network with regular switches?

answer

You can create multiple broadcast domains.

question

Which of the following statements describe how VLANs affect broadcast traffic within an internetwork? (Select two.)

answer

Broadcast traffic is transmitted only within a VLAN. Devices on the same VLAN have the same subnet address.

question

Which of the following are true regarding using multiple VLANs on a single switch? (Select two.)

answer

The number of broadcast domains increases. The number of collision domains remains the same.

question

Which interface is a member of VLAN 65?

answer

Fa0/22

question

Consider the following output for a dig command run on a Linux system. ; < DiG 82 <> westsimlll.com ;;res options;init recurs defnam dnsrch ;;got answer: ;;->>HEADER<<-opcode:QUERY, status: NOERROR, id:4 ;;flags: qr rd ra; QUERY:1 ANSWER:1, AUTHORITY:2, ADDITIONAL:0 ;;QUERY SECTION ;;westsimlll.com, type = A, class = IN ;;ANSWER SECTION: westsimlll.com 7h33m IN A 76.141.43.129 ;;AUTHORITY SECTION: westsimlll.com. 7h33m IN NS dns1.deriatct111.com. westsimlll.com. 7h33m IN NS dns2.deriatct222.com. ;;Total query time: 78 sec ;;FROM: localhost.localdomain to SERVER:default --202.64.49.150 ;;WHEN: Tue Feb 16 23:21:24 2005 ;;MSG SIZE sent: 30 rcvd:103 What is the IP address of the DNS server that performed this name resolution?

answer

202.64.49.150

question

After installing a new DHCP server on the network, you need to verify that the network devices are receiving IP addresses via DHCP. You reboot a Windows XP client system and using the ipconfig command, receive the following information: Ethernet adapter Local Area Connection 1: Description: CardBus-II 10/100 PC Card Physical Address : 02-00-4C-3F-50 DHCP Enabled : Yes Auto configuration Enabled : Yes Auto configuration IP Address : 169.254.25.129 Subnet : 255.255.0.0 Default Gateway: DNS Servers: Which of the following statements are true?

answer

The client system is unable to reach the DHCP server. The client system is configured to use DHCP.

question

You are troubleshooting a network connectivity issue on a UNIX system. You are able to connect to the remote system by using their IP address, but unable to connect using the hostname. You check the TCP/IP configuration, and note that a DNS server IP address is configured. You decide to run some manual resolution queries to ensure that the communication between the UNIX system and the DNS server are working correctly. Which utilities can you use to do this?

answer

nslookup. dig.

question

Mary calls to tell you that she can't to an intranet server called WebSrv1. From her computer, you ping the server's IP address. The ping test is successful. Which tool would you use on her workstation next to troubleshoot the problem?

answer

nslookup.

question

CorpServ is a small company with 14 client systems and a network printer. Because there are only a limited number of networked systems, you decide to use APIPA addressing for the network. With APIPA configured, all systems are able to communicate with each other but you are having trouble configuring Internet access. What is the likely cause of the problem?

answer

Private addresses cannot directly communicate to hosts outside the local subnet.

question

Consider the following output: ;; res option: init rescuers defnam dnsrch ;;got answer ;;->>HEADER;<<-opcode:QUERY, status; NOERROR, id:4 ;;flags: gr rd ra; QUERY:1, ANSWERS:1, AUTHORITY:2, ADDITIONAL:0 ;;QUERY SECTION: ;;westsimlll.com, type = A, class = IN ;;ANSWER SECTION; westsimlll.com. 7h33m IN A 76.141.43.129 ;;AUTHORITY SECTION: westsimlll.com. 7h33m IN NS dns1.deriact111.com. westsimlll.com. 7h33m IN NS dns2.deriact222.com. ;;Total query time: 78 sec ;;FROM: localhost.localdomain to SERVER: default -- 202.64.49.150 ;;WHEN: Tue Feb 6 23:21:24 2005 ;;MSG SIZE sent: 30 rcvd: 103 Which of the following utilities produced this output?

answer

dig.

question

A user reports that he can't browse to a specific Web site on the Internet. From his computer, you find that a ping test to the Web server succeeds. A trace route test shows that 17 hops to the destination Web server. What is the most likely cause of the problem?

answer

Incorrect DNS server address.

question

You are implementing a DHCP server for your segment. Your segment's IP address is 192.168.1.0. Your default gateway address is 192.168.1.254. Your DNS server address is 192.168.1.1. Your default gateway is configured as a NAT router to translate addresses between network segments. YOu configured the 03 Router option on your DHCP server so it can deliver the IP address of the default gateway to workstations. After configuring your workstations to get their IP address information dynamically, your users complain that they are unable to access web sites on the Internet. How can you resolve this problem?

answer

You must configure your DHCP server with an option that delivers the IP address of the DNS server (Option 06).

question

Examine the following output: Server: helicuplar.xct.takro.net Address: 209.53.4.130 Name: westsim.com Address: 64.78.193.84 Which of the following utilities produced this output?

answer

nslookup.

question

Which of the following are valid IPv6 IP addresses?

answer

6384:1319:7700:7631:446A:5511:8940:2552 141:0:0:0:15:0:0:1

question

Which of the following is a valid IPv6 address?

answer

FEC0::AB:9007

question

Match the IPv6 address configuration method on the right with it's definition on the left.

answer

Static Full Assignment: The entire 128-bit address and all other configuration information is statically assigned to the host. Static partial Assignment: The prefix is statically assignment and the interface ID is delivered from the MAC address. Stateless Auto-configuration: Clients automatically generate the interface ID and learn the subnet prefix and default gateway through the neighbor discovery protocol (NDP) Stateful DHCPv6: Provides each client an IP address, default gateway, and other IP configuration Stateless DHCPv6: Supplies the client with the DNS server IP address only. Does not provide the client with an IP address and does not track the status of each client.

question

Which of the following tunneling methods is used to send IPv4 traffic through an IPv6 network?

answer

4-to-6 tunneling

question

You manage a network with two locations: Portland and Seattle. Both locations are connected to the Internet. All computers in both locations are configured to use IPv6. You would like to implement an IPv6 solution to meet the following requirements: Hosts in each location should be able to use IPv6 to communicate with hosts in the other location through the IPv4 Internet. You want to use a site-to-site tunneling method instead of a host-to-host tunneling method. Which IPv6 solution should you use?

answer

6-to-4

question

Which of the following are characteristics of Teredo tunneling?

answer

Works through NAT dual stack hosts tunnel endpoints configured on hosts

question

You have a special server at work with a custom application installed. Connections to the server that use custom application must use IPv6. The server is currently running IPv4. You are the only person who connects to the server, and you always use your laptop for the connection. Your laptop supports both IPv4 and IPv6. The rest of your company network runs only IPv4. You need a cost effective solution to allow your laptop to connect to the server. Your solution must also support communication through NAT servers. Which method should you use?

answer

Miredo

question

You manage a network that uses IPv6 addressing. When clients connect devices to the network, they generate an interface ID and use NDP to leanrthe subnet prefix and default gateway. Which IPv6 address assignment method is being used?

answer

Stateless auto configuration

question

The media access control method of all Ethernet networks is

answer

CSMA/CD

question

A network is connected following the IEEE 802.3 specifications. Which of the following best describes when a device can transmit messages?

answer

The device listens to determine if the transmission media is free.

question

Which of the following use the CSMA/CD access method?(2 answers)

answer

10BaseT 1000BaseT

question

Which of the following physical topologies are used with Ethernet networks?(2 answers)

answer

Star Bus

question

Ethernet 100BaseFX networks use what type of cabling?

answer

Fiber-optic

question

Which of the following Ethernet standards uses fiber optic cabling?(2 answers)

answer

100BaseFX 1000BaseLX

question

Your network follows the 100BaseTx specifications for Fast Ethernet. What is the maximum cable segment length allowed?

answer

100 meters

question

With an Ethernet 10BaseT network, the maximum cable length between a computer and the hub is:

answer

100 meters

question

You have been tasked with designing an Ethernet network. Your client needs to implement a very high-speed network backbone between campus buildings; some of which are around 300 m apart. Fiber-optic cabling has already been installed between buildings. Your client has asked that you use the existing cabling that operates at full-duplex. Which Ethernet standard meets these guidelines?(2 answers)

answer

10GBaseSR 1000BaseSX

question

What type of cabling is used with 100BaseTX Fast Ethernet networks?

answer

Type 1A STP or Category 5 UTP

question

What topology is used with 100BaseTX Fast Ethernet networks?(2 answers)

answer

Physical star/logical bus Physical star/logical star

question

Which of the following are requirements of the 1000BaseT Ethernet standards?(3 answers)

answer

RJ-45 connectors The cable length must be less than or equal to 100m CAT 5e cabling

question

You are planning a network for an educational campus. Due to the size of the buildings and the distance between them, you have elected to use 10BaseFL hubs, cabling, and network interface cards. What is the maximum length for the network cable between a workstation and a hub?

answer

2000 meters

question

Which Gigabit Ethernet standard uses multimode fiber-optic cabling and supports network segments up to a maximum of 550 m long?

answer

1000BaseSX

question

You have been tasked with designing a high-speed Ethernet network. Your client's building already has 150 ohm shielded twisted pair wiring installed. Due to budget constraints, they have asked you to reuse the existing wiring instead of installing new fiber optic cabling. Which Ethernet standard could you implement in this situation?

answer

1000BaseCX

question

You would like to implement 10 Gbps Ethernet over a distance of 1 km or greater. Which of the following would be the minimum requirement for the implementation?(2 answers)

answer

10GBaseLR standards Single mode fiber

question

Which of the following standards is used by SONET?

answer

10GBaseLW

question

You want to implement an Ethernet network at very long distances using fiber optic cables. Which standard and cable type would you choose?(2 answers)

answer

Single Mode Fiber 1000BaseLX

question

You need to transfer data from one laptop to another and would like to use an Ethernet cable. You do not have a hub or a switch. Which type of cable should you use?

answer

Crossover

question

You want to connect the LAN port on a router to the uplink port on a switch. The switch does not support auto-MDI. Which type of cable should you use?

answer

Crossover

question

You have two switches that you need to connect using their uplink ports. The switches do not support auto-MDI. Which type of cable should you use?

answer

Crossover

question

You need to connect a workstation to a switch using a regular port on the switch (not an uplink port). The switch does not sport auto-MDI. Which type of cable should you use?

answer

Straight-Through

question

You have purchased a new router that you need to configure. You need to connect a workstation to the router's console port to complete the configuration task. Which type of cable would you most likely use?

answer

Rollover

question

Which of the following connectors is typically used on one end of a rollover cable?

answer

serial

question

Using the exhibit to match the connector type on the left with the corresponding letter on the right.

answer

A- DB-25 B- DB-9 C- RJ45 D- RJ11 E- LC F- BNC G- F-Type

question

You want to create a rollover cable that has an RJ-45 connector on both ends. How should you connect the wires within the connectors?

answer

Connect pin 1 to pin 8, pin 2 to pin 7, pin 3 to pin 6, and pin 4 to pin 5

question

You are implementing a SOHO network for a local business. The ISP has already installed and connected a cable modem in the business. The business has four computers that need to communicate with each other and the internet. You examine each computer and notice only one of the four has a wireless NIC; they all have ethernet NICs. What should you purchase.

answer

An unmanaged switch and Cat5e cabling

question

You manage the two-location network shown in the exhibit. Workstations and servers at each location connect to a patch panel using behind-the-wall wiring. The patch panel.... Drag the cable type on the left to the most appropriate network location on the right.

answer

Drop Cables Cat6 straight-through UTP Patch Cables Cat6 straight-through UTP Uplink Cables Cat6 crossover UTP WAN Cable Single-mode fiber optic

question

Which of the following tests can be performed by a TDR?

answer

Measure the length of a cable. Identify the location of a fault on a cable.

question

You have a network connected using a physical bus topology. One of the cables connecting a workstation to the bus breaks. Which of the following best describes what happens to network communications?

answer

No device is able to communicate.

question

You manage a network that uses 1000BaseT Ethernet. You find that one device communicates on the network at only 100 Mbps. Which tool should you use to test the drop cable and the connection to the network?

answer

Certifier

question

You are creating an Ethernet network for your company. The shipping department is located in a different building that is located 150 meters from the main wiring closet. You connect a single Cat 6e cable to connect the wiring closet to the shipping building. Which of the following should you include in your plan?

answer

Repeater

question

A user from the Sales department calls to report that he is experiencing problems connecting to the Sales file server. All users in the Sales department connect to the Sales server through a single Ethernet switch. No other users have reported problems connecting to the Sales server. Which of the following troubleshooting actions are you most likely to perform first?

answer

Replace the network card in the user's computer.

question

Users report that the Internet is no longer accessible. You suspect that the line connecting your building to the Internet is not working properly. Which of the following allows the service provider to remotely test the local loop?

answer

Smart jack.

question

You are troubleshooting a client connectivity problem on an Ethernet network. The client system has intermittent connectivity to the network. You discover that the UTP patch cable is run 75 feet from the wall outlet, passes through the ceiling and over several florescent light fixtures before reaching the client system. Which of the following may be a cause of the connectivity problem?

answer

EMI interfaace.

question

You are moving a client to a new location within an Ethernet network. Previous to the move, the client system did not have any difficulty accessing the network. During the relocation, you attach a patch cable from the client system to the wall jack and from the patch panel to the switch. Once connected you do not get a link light on the network card or the switch. You swap out the cable running between the patch panel and the switch with a known working one but you can still not connect. Which of the following might you suspect as the problem?

answer

Failed patch cable between the client system and the wall jack.

question

You are creating an Ethernet network for your company. The shipping department is located in a different building that is located 150 meters from the main wiring closet. You connect a single Cat6e cable to connect the wiring closet to the shipping building. Which of the following are you most likely to experience?

answer

Attenuation.

question

You have decided to implement Gigabit Ethernet on your network. Each switch port is connected to a single device. Following the installation, you find one device connected to a switch that is only running at 100 Mbps. Which of the following are likely causes?

answer

Crosstalk.

question

You have a cable Internet connection at home. The installer had connected the router near the outside wall of your house with RG-6 cable. You move the cable router a distance of 50 meters using RG-8 cables and special connector adapters. Which condition are you most likely to experience?

answer

Echo

question

You want to measure the voltage, amps, and ohms of various devices. Which tool should you use?

answer

Multimeter.

question

Which of the following standards is typically used in a rollover cable?

answer

RJ-232

question

Which Gigabit Ethernet standard can support long network segments up to a maximum of 5 km when used with single mode fiber-optic cable?

answer

1000BaseLX.

question

What topology is used with 100BaseTX Fast Ethernet networks?

answer

Physical star/logical bus. Physical star/logical star.

question

Ethernet 100BaseFX networks use what type of cabling?

answer

Fiber optic.

question

You are planning a network for an educational campus. Due to the size of the buildings and the distance between them, you have elected to use 10BaseFL hubs, cabling, and network interface cards. What is the maximum length for the network cable between a workstation and a hub?

answer

2000 meters.

question

You would like to implement 10 Gbps Ethernet over a distance of 1 kilometer or greater. Which of the following would be the minimum requirement for the implementation?

answer

10GBaseLR standards. Single mode fiber.

question

Which of the following standards is used by SONET?

answer

10GBaseLW.

question

What type of cabling is used with 10BaseTX Fast Ethernet networks?

answer

Type 1A STP or Category 5 UTP.

question

You want to implement an Ethernet network at very long distances using fiber optic cables. Which standard and cable type would you chose?

answer

1000BaseLX. Single mode fiber.

question

Which of the following are requirements of the 1000BaseT Ethernet standards?

answer

Cat 5 cabling. RJ-45 connectors. The cable length must be less or equal to 100m.

question

With an Ethernet 10BaseT network, the maximium cable length between a computer and the hub is:

answer

100 meters.

question

You have been tasked with designing an Ethernet network. Your client needs to implement a very high-speed network backbone between campus buildings; some of which are around 300 m apart. Multimode fiber-optic cabling has been already installed between buildings. Your client has asked that you use the existing cabling. Which Ethernet standard meets these guidelines?

answer

1000BaseSX. 10GBaseSR.

question

Your network follows the 100BaseFX specifications for Fast Ethernet, and uses half-duplex, multimode cable. What is the maximium cable segment length allowed?

answer

412 meters.

question

You have been tasked with designing a high-speed Ethernet network. Your client's building already has 150-ohm shielding twisted pair (STP) wiring installed. Due to budget constraints, they have asked you reuse the existing wiring instead of installing new fiber-optic cabling.

answer

1000BaseCX.

question

Your network follows 100BaseTX specifications for Fast Ethernet. What is the maximum cable segment allowed?

answer

100 meters.

question

Which Gigabit Ethernet standard uses multimode fiber-optic cabling and supports network segments up to a maximum of 550 meters long?

answer

1000BaseSX.

question

Which of the following Ethernet standards uses fiber-optic cabling?

answer

100BaseFX. 1000BaseLX.

question

What is the minimum cable specification that supports 1000 Mbps Ethernet?

answer

Cat 5.

question

Which command would you use on a switch to enable management from a remote network?

answer

IP default-gateway 192.168.10.185

question

What does the ip address dhcp command all you to do?

answer

Configures the switch to obtain an IP address from a DHCP server

question

You are configuring a switch so that you can manage it via PuTTY from the same network segment as the switch. On the switch, you enter the following commands. Switch# config terminal switch(config)#interface Evian 1 switch(config-if)#ip- address 192.168.1.10 225.225.225.0 will this configuration work?

answer

No, the no shutdown command needs to be entered

question

CSMA/CD

answer

The media access control method of all Ethernet networks is ___________________.

question

The device listens to determine if the transmission media is free.

answer

A network is connected following the IEEE 802.3 specifications. Which of the following best describes when a device can transmit messages?

question

10BaseT & 1000BaseT

answer

Which of the following use the CSMA/CD access method? Select all that apply.

question

Bus and Star

answer

Which of the following physical topologies are used with Ethernet networks? (Select two.)

question

Fiber optic

answer

Ethernet 100BaseFX networks use what type of cabling?

question

100BaseFX & 1000BaseLX

answer

Which of the following Ethernet standards uses fiber optic cabling? (Select two.)

question

100 meters

answer

Your network follows the 100BaseTx specifications for Fast Ethernet. What is the maximum cable segment length allowed?

question

100 meters

answer

With an Ethernet 10BaseT network, the maximum cable length between a computer and the hub is __________.

question

10BaseSR &1000BaseSX

answer

You have been tasked with designing an Ethernet network. Your client needs to implement a very high-speed network backbone between campus buildings; some of which are around 300 meters apart. Multimode fiber-optic cabling has already been installed between buildings. Your client has asked that you use the existing cabling. Which Ethernet standard meets these guidelines? (Choose two.)

question

Type 1A STP or Category 5 UTP

answer

What type of cabling is used with 100BaseTX Fast Ethernet networks?

question

Physical star/logical bus & Physical star/logical star

answer

What topology is used with 100BaseTX Fast Ethernet networks? (Select two.)

question

CAT 5 cabling & RJ-45 connectors & The cable length must be less than or equal to 100m

answer

Which of the following are requirements of the 1000BaseT Ethernet standards? (Select three.)

question

2000 meters

answer

You are planning a network for an educational campus. Due to the size of the buildings and the distance between them, you have elected to use 10BaseFL hubs, cabling, and network interface cards. What is the maximum length for the network cable between a workstation and a hub?

question

1000BaseSX

answer

What Gigabit Ethernet standard uses multimode fiber-optic cabling and supports network segments up to a maximum of 550 meters long?

question

1000BaseCX

answer

You have been tasked with designing a high-speed Ethernet network. Your client's building already has 150-ohm shielded twisted pair (STP) wiring installed. Due to budget constraints, they have asked you to reuse the existing wiring instead of installing new fiber-optic cabling. Which Ethernet standard could you implement in this situation?

question

Single mode fiber & 10BaseLR standards

answer

You would like to implement 10 Gbps Ethernet over a distance of 1 kilometer or greater. Which of the following would be the minimum requirement for the implementation? (Select two.)

question

10GBaseLW

answer

Which of the following standards is used by SONET?

question

1000BaseLX & Single mode fiber

answer

You want to implement an Ethernet network at very long distances using fiber optic cables. Which standard and cable type would you choose? (Select two.)

question

Crossover

answer

You need to transfer data from on laptop to another and would like to use an Ethernet cable. You do not have a hub or a switch. Which type of cable should you use?

question

Crossover

answer

You want to connect the LAN port on a router to the uplink port on a switch. The switch does not support auto-MDI. What type of cable should you use?

question

Crossover

answer

You have two switches that you need to connect using their uplink ports. The switches do not support auto-MDI

question

Straight-through

answer

You need to connect a workstation to a switch using a regular port on the switch (not an uplink port). The switch does not support auto-MDI. Which type of cable should you use?

question

Rollover

answer

You have purchased a new router that you need to configure. You need to connect a workstation to the router's console port to complete the configuration tasks. Which type of cable would you most likely use?

question

Serial

answer

Which of the following connectors is typically used on one end of a rollover cable?

question

RS-232

answer

Which of the following standards is typically used in a rollover cable?

question

Connect pin 1 to pin 8, pin 2 to pin 7, pin 3 to pin 6 and pin 4 to pin 5

answer

You want to create a rollover cable that has an RJ-45 connector on both ends. How should you connect the wires within connectors?

question

An unmanaged switch and CAT5e cabling

answer

You are implementing a SOHO network for a local business. The ISP has already installed and connected a cable modem in the business. The business has four computers that need to communicate with each other and the Internet. The ISP's cable modem has only one RJ-45 port. You need to set up the network with the following in mind: Spend as little money as possible. Do not purchase unnecessary equipment. Computers need to have a gigabit connection to the network. New devices should not require management or configuration

question

No devices will be able to communicate

answer

You have a network connected using a physical bus topology. One of the cables connecting a workstation to the bus breaks. Which of the following best describes what happens to network connections?

question

Identify the location of a fault on a cable. & Measure the length of a cable.

answer

Which of the following can be performed by a TDR? (Select two.)

question

Certifier

answer

You manage a network that uses 1000BaseT Ethernet. You find that one device communicates on the network at only 100 Mbps. Which tool should you use to test the drop cable and the connection to the network?

question

Repeater

answer

You are creating an Ethernet network for your company. The shipping department is located in a different building that is located 150 meters from the main wiring closet. You connect a single Cat 6e cable to connect the wiring closet to the shipping building. Which of the following should you include in your plan.

question

Smart Jack

answer

Users report that the Internet is no longer accessible. You suspect that the line connecting your building to the Internet is not working properly. Which of the following allows the service provider to remotely test the local loop?

question

Replace the network card in the user's computer

answer

A user from the Sales department calls to report that he is experiencing problems connecting to the Sales file server. All users in the Sales department connect to the Sales server through a single Ethernet switch. No other users have reported problems connecting to the Sales server. Which of the following troubleshooting actions are you most likely to perform first?

question

EMI interference

answer

You are troubleshooting a client connectivity problem on an Ethernet network. The client system has intermittent connectivity to the network. You discover that the UTP patch cable is run 75 feet from the wall outlet, passes through the ceiling and over several florescent light fixtures before reaching the client system. Which of the following may be a cause of the connectivity problem?

question

Failed patch cable between the client system and the wall jack

answer

You are moving a client to a new location within an Ethernet network. Previous to the move, the client system did not have difficulty accessing the network. During the relocation, you attach a patch cable from the client system to the wall jack from the patch panel to the switch. Once connected you do not get a link light on the network card or the switch. You swap out the cable running between the patch panel and the switch with a known working one but you can still not connect. Which of the following might you suspect as the problem?

question

Crosstalk

answer

You have decided to implement Gigabit Ethernet on your network. Each switch port is connected to a single device. Following the installation, you find one device connected to a switch that is only running at 100 Mbps. Which of the following are likely causes?

question

Attenuation

answer

You are creating an Ethernet network for your company. The shipping department is located in a different building that is located 150 meters from the main wiring closet. You connect a single Cat6e cable to connect the wiring closet to the shipping building. Which of the following conditions are you most likely to experience?

question

Echo

answer

You have a cable Internet connection at home. The installer had connected the router near the outside wall of your house with RG-6 cable. You move the cable router a distance of 50 meters using RG-8 cables and special connector adapters. Which condition are you most likely to experience?

question

Multimeter

answer

You want to measure the voltage, amps, and ohms of various devices. What tool should you use?

question

169.254.0.1-169.254.255.254

answer

Which of the following IP address ranges is reserved for Automatic Private IP Addressing?

question

255.255.0.0 & 169.254.0.0

answer

What is the network address and subnet mask used by APIPA? (Select two.)

question

Private addresses cannot directly communicate to hosts outside the local subnet

answer

CorpSerc is a small company with 14 client systems and a network printer. Because there are only a limited number of networked systems, you decide to use APIPA addressing for the network. With APIPA configured, all systems are able to communicate with each other but you are having trouble configuring Internet access. What is the likely cause of the problem?

question

Specify which server network interface the agent listens on for DHCP messages.

answer

You are configuring the DHCP Relay Agent role service on a Windows server. Which of the following is a required step for the configuration?

question

Routing and Remote Access

answer

You have a Windows Server 2012 system that you want to use as a DHCP Relay Agent. Which Windows Server 2012 service would you use to do this?

question

ip helper-address 172.16.30.1

answer

You need to configure a Cisco RFC 1542 compliant router to forward any received DHCP frames to the appropriate subnet. The address of the remote DHCP server is 172.16.30.1 Which of the following commands would be used to configure the router?

question

You need to replace a fiber optic cable that is connecting two switches together. You instpect the existing fiber cable and determine that it uses LC connectors. You also notice the cable's ferrule has a slight slant to it. Which polish grade should you use to replace the existing cable?

answer

Angled Physical Contact polish

question

Which type of polish grade uses green-colored connectors to help prevent using the wrong connector type?

answer

Angled Physical Contact

question

You've connected a cable certifier to an RJ45 wall jack, and the output shown below is displayed on the device. What does this output indicate? (Select two.)

answer

-The cable is functioning correctly -This is a crossover cable

question

Consider the 850 nm multimode fiber optic cable shown below. How much loss can you expect between the transmitter and the receiver?

answer

-1.2 dB

question

Long ass question #1... Will this implementation work?

answer

No, you shouldn't use multimode patch cables with single mode GBIC moduals

question

Long ass question #2... Will this implementation work?

answer

No, you should purchase path cables that use MT-RJ connectors

question

While viewing the status of the interfaces on a Cisco switch, you see an abnormally large number of CRC errors on one interface. This interface is connected to a user's workstation located in a cubicle on the 2nd floor. What could be causing this to happen?

answer

A strong emitter near the cable run connected to that interface

question

You are troubleshooting a connectivity problem in which one clien system is unable to connect to a server. Both the server and client system are connected to the same Ethernet network switch. No other users have complained of a problem, and you suspect that faulty network cabling might be to blame. Which of the following troubleshooting steps are you most likely to perform first?

answer

Use a cable tester to test the cable between the computer system and the network switch.

question

Your organization has been assigned a registered global routing prefix of 2001:FEED:BEEF::/48 by an ISP. Using your organization's IPv6 addressing scheme, you've used the next 16 bits beyond the global routing prefix to define the following subnets: 2001:FEED:BEEF:0001::/64 2001:FEED:BEEF:0002::/64 2001:FEED:BEEF:0003::/64 2001:FEED:BEEF:0004::/64 You need to statically assign an interface ID of 0000:0000:0000:0001 to the router interface connected to the 2001:FEED:BEEF:0003::/64 subnet. Which interface configuration command would you use to do this?

answer

ipv6 address 2001:FEED:BEEF:0003::1/64

question

Your organization has decided to implement unique local unicast IPv6 addressing. A global ID of FD01:A001:0001::/48 been selected for the organization's IPv6 addressing scheme. The next 16 bits beyond the global ID have been used to define the following subnets: FD01:A001:0001:0001::/64 FD01:A001:0001:0002::/64 FD01:A001:0001:0003::/64 FD01:A001:0001:0004::/64 You need to statically assign an interface ID to a router interface connected to the FD01:A001:0001:0003::/64 subnet. To ensure uniqueness, the interface ID should be constructed using the MAC address of the router interface. Which interface configuration command would you use to do this?

answer

ipv6 address FD01:A001:0001:0003::/64 eui-64

question

Your company has just started contracting with the government. As part of the contract, you have configured a special server for running a custom application. Contract terms dictate that this server use only IPv6. You have several hosts that need to communicate with this server. Hosts run only IPv4 and cannot be configured to run IPv6. Which solution would you use to allow the IPv4 clients to communicate with the IPv6 server?

answer

NAT-PT

question

Your company wants to begin the transition from IPv4 to IPv6. You want to stage the implementation on a host-by-host basis. You will enable IPv6 on existing hosts as time and budget allows. During the transition, all hosts in your site need to communicate with all other hosts. IPv6 should be used between hosts when both hosts support IPv6. NAT supported is not required. Which method should you use?

answer

ISATAP

question

Which of the following are characteristics of 6-to-4 tunneling? (Select three.)

answer

Dual stack routers Tunnel endpoints configured on routers Works through NAT

question

Which of the following are characteristics of Teredo tunneling? (Select three.)

answer

Tunnel endpoints configured on hosts Works through NAT Dual stack hosts

question

You have a special server at work with a custom application installed. Connections to the server that use the custom application must use IPv6. The server is currently running IPv4. You are the only person who connects to the server, and you always use your laptop for the connection. Your laptop supports both IPv4 and IPv6. The rest of your company network runs only IPv4. You need a cost-effective solution to allow your laptop to connect to the server. Your solution must also support communication through NAT servers. Which method should you use?

answer

Teredo

question

Which of the following are characteristics of ISATAP for IPv6 tunneling? (Select two.)

answer

Dual stack hosts Dual stack routers

question

You are working on a workstation with the following MAC address: 10-01-64-AB-78-96. Which of the following will be the link-local address using the modified EUI-64 format?

answer

FE80::1201:64FF:FEAB:7896

question

You manage a local area network with several switches. A new employee has started today so you connect her workstation to a switch port. After connecting the workstation, you find that the workstation cannot get an IP address from the DHCP server. You check the link and status lights and the connection is working properly. A ping to the local loopback address on the workstation succeeds. No other computers seem to have a problem. Which of the following is the most likely cause of the problem?

answer

Incorrect VLAN assignment.

question

A user reports that network access from her workstation is very slow. The problem does not seem to be affecting any other ways. Which of the following conditions is the most likely cause?

answer

Duplex mismatch.

question

You manage a network with multiple switches. You find that your switches are experiencing heavy broadcast storms. Which of the following will help reduce the effects of a broadcast storm?

answer

Enable spanning tree on the switches.

question

Select the statement that best describes a broadcast storm.

answer

A broadcast storm occurs where there are many broadcast messages on the network that they approach or exceed the network bandwidth.

question

Which of the following solutions would you implement to eliminate switching loops?

answer

Spanning tree.

question

You manage a network with a single switch. On each switch port, a hub connects multiple devices to the switch. Which condition are you most likely to experience on the network?

answer

Collisions.

question

You want to reduce collisions by creating separate collision domains and virtual LANs. Which of the ff. devices should you choose?

answer

Switch

question

Which characteristic of a switch can improve bandwidth utilization and reduce the risk of sniffing attacks on the network?

answer

A switch filters port traffic based on MAC address.

question

Which of the ff. is an average of using switches to create virtual LANs?

answer

Broadcast traffic travels to a subset of devices rather than to all devices on the network.

question

You manage a network with a single switch. All hosts connect to the network through the switch. You want to increase the security of devices that are part of the accounting department. You want to make sure that broadcast traffic sent by an accounting computer is only received by other accounting computers, and you want to implement ACLs to control traffic sent to accounting computers through network. What should you do?

answer

Use a router to configure a subnet for the accounting computers.

question

What characteristic of hubs poses a security threat?

answer

Hubs transmit frames to all hosts on all ports.

question

Which of the ff. devices does "not" examine the MAC address in a frame before processing or forwarding the frame?

answer

Hub

question

A relative new employee in the data entry cubical farm was assigned a user account similar to that of all of the other data entry employees. However, audit logs have shown that this user account has been used to change ACLs on several confidential files and has accessed data in restricted areas. This situation indicates which of the ff. has occurred?

answer

Privilege escalation

question

An attacker has obtained the logon credentials for a regular user on your network. Which type of security threat exists if this user account is used to perform administrative functions?

answer

Privilege escalation

question

Which protocol should you disable on the user access ports of a switch?

answer

DTP

question

Which of the ff. attacks, if successful, causes a switch to function like a hub?

answer

MAC flooding

question

Which is a typical goal of MAC spoofing?

answer

Bypassing 802.1x port-based security

question

Which of the ff. switch attacks associates the attacker's MAC address with the IP address of the victim's devices?

answer

ARP spoofing/poisoning

question

Which of the ff. best describes the concept of virtual LAN?

answer

Device on the same network logically grouped as if they were on separate networks

question

You manage a network that uses a single switch. All ports within your building connect through the single switch. In the lobby of your building are three RJ-45 ports connected to the switch. You want to allow visitors to plug into these ports to gain Internet Access, but they should not have access to any other devices on your private network. Employees connected throughout the rest of your building should have both private and Internet access. Which feature should you implement?

answer

VLANs

question

You run a small network for your business that has a single router connected to the internet and a single switch. You keep sensitive doc. on a computer that would like to keep isolated from other computers on the network. Other hosts on the network should not be able to communicate with this computer through the switch, but you still need to access the network through the computer. What should you implement?

answer

VLAN

question

You manage a network that uses a single switch. All ports within your building connect through the single switch. In the lobby of your building are three RJ-45 ports connected to the switch. You want to make sure that visitors cannot plug in their computer to the free network jacks and connect to the network. However, employees who plug into those same jacks should be able to connect to the network. What feature should you configure?

answer

Port authentication

question

When configuring VLANs on a switch, what is used to identify VLAN membership of a device?

answer

Switch port

question

Which of the ff. solutions would you implement to eliminate switching loops?

answer

Spanning Tree

question

Your company is a small start-up company that has leased office in a building shared by other businesses. All businesses share a common network infrastructure. A single switch connects all devices in the building to the router that provides Internet access. You would like to make sure that your computers are isolated from computers used by other companies. Which feature should you request to have implemented?

answer

VLAN

question

You are the network administrator for a city library. Throughout the library are several groups of computers that provide public access to the Internet. Supervision of these computers has been difficult. You've had problems with patrons brining personal laptops into the library and disconnecting the network cables from the library computers to connect their laptops to the Internet. The library computers are in groups of four. Each group of four computers is connected to a hub that is connected to the library network through an access point on a switch. You want to restrict access to the network so only the library computers are permitted connectivity to the internet. What can you do?

answer

Configure port security on the switch

question

In which of the ff. situations would you use port security?

answer

You wanted to restrict the devices that could connect through a switch port

question

You want to increase the security of your network by allowing only authenticated users to be able to access network devices through a switch. Which of the ff. should you implement?

answer

802.1x

question

When configuring VLANs on a switch, what type of switch ports are members of all VLANs defined on the switch?

answer

Trunk ports

question

A virtual LAN can be created using which of the ff.?

answer

Switch

question

You manage a single subnet with three switches. The switches are connected to provide redundant paths between the switches. Which feature prevents switching loops and ensures there is only a single active path between any two switches?

answer

Spanning tree

question

Which IDS method searches for intrusion or attack attempts by recognizing patterns or identities listed in a database?

answer

Signature based

question

Which of the ff. devices is capable of detecting and responding to security threats?

answer

IPS

question

You are concerned about protecting your network from network-based attacks from the Internet. Specially, you are concerned about attacks that have not yet been identified or that do not have prescribed protections. Which type of device should you use?

answer

Anomaly based IDS

question

You have just installed a new network-based IDS system that uses signature recognition. What should you do on a regular basis?

answer

Update the signature files

question

What do host based intrusion detection systems often rely upon to perform their detection activities?

answer

Host system auditing capabilities

question

Which of the ff. describes a false positive when using an IPS device?

answer

Legitimate traffic being flagged as malicious

question

You want to create a collection of computers on your network that appear to have valuable data, but are really computers configured with fake data that could entice a potential intruder. Once the intruder connects, you want to be able to observe and gather information about the methods of attack that is being deployed. What should you implement?

answer

Honeynet

question

What security mechanism can be used to detect attacks originating on the Internet or from within an internal trusted subnet?

answer

IDS

question

If maintaining confidentiality is of the utmost importance to your organization, what is the best response when an intruder is detected on your network?

answer

Disconnect the intruder

question

What is the most common form of host based IDS that employs signature or pattern matching detection methods?

answer

Anti-virus software

question

A honey pot is used for what purpose?

answer

To delay intruders in order to gather auditing data

question

You have configured a NIDS to monitor network traffic. Which of the ff. describes an attack that is not detected by the NIDS device?

answer

False negative

question

Which of the following are reasons to configure VLAN's on a switch as opposed to using switches without VLANs?

answer

Increased Security Increased Number of broadcast domains

question

Which of the following benefits apply only to creating VLANs with switches and not to segmenting the network with regular switches?

answer

You can create multiple broadcast domains

question

Which of the following statements describe how VLANs effect broadcast traffic within an internetwork?

answer

Devices on the same VLAN have the same subnet address Broadcast traffic is transmitted only within a VLAN

question

Which of the following are true using multiple VLANS on a single switch?

answer

The number of broadcast domains increases The number of collision domains remain the same

question

Which of the following statements accurately describes a VLAN ID?

answer

switches append a VLAN ID to the header of each frame to identify the virtual network to which it belongs

question

What primary advantage does the 801.1Q Trunk Protocol offer compared to ISL?

answer

Can be used with a mix of Cisco and non-Cisco devices IEEE standard

question

You've just enabled trunking on the fa0/1 port of Catalyst 2960 switch. By default what traffic can now be sent across this interface?

answer

only 802.1Q traffic

question

1. interface Fa0/1 2. interface Fa0/2 3. interface Fa0/3 4. interface Fa0/4

answer

1. switch port mode access 2. switch port mode access 3. switch port mode trunk 4. switch port mode access

question

You have a Catalyst 2900 with three defined VLANs: VLAN 1 VLAN 3 and VLAN 5. You connect the switch to another switch using the Fa0/1 interface using the switchport mode trunk command for Fa0/1. Assuming the other switch has a default configuration that will now only pass through the Fa0/1 on the switch?

answer

Traffic for all VLANs defined on the switch

question

You want to verify that trunking is enabled between the Catalyst 2950XL switch and a Cisco 2600 router. Which command must you enter?

answer

show interface Fa0/1 trunk

question

You want to get a list of all ports on your switch that are currently trunking. Which command should you use?

answer

show interface trunk

question

You are implementing a static VLAN trunking configuration on a Catalyst 3500 switch. You would like to keep the switch from tagging packets from VLAN 3 as they leave Fast Ethernet 0/1. Which commands would you use?

answer

Switch(config)#int fa0/1 Switch(config-if)#switchport mode trunk Switch(config-if)#switchport trunk native vlan 3

question

Which of the following are true concerning the native VLAN and VLAN trunking?

answer

With 802.1Q trunking frames from the native VLAN are not tagged If the native VLAN on one end of the trunk is different from the native VLAN on the other end the traffic of the native VLANS on both sides cannot be transmitted correctly on the trunk Frames are placed into the native VLANS when they enter the 802.1Q trunking interface but do not have an 802.1Q header

question

Which of the following statements accurately describes a VLAN ID?

answer

Switches append a VLAN ID to the header of each frame to identify the virtual network to which it belongs

question

What primary advantages does the 802.1Q Trunking Protocol offer compared to ISL ?

answer

IEEE Standard Can be used with a mix of Cisco and Non Cisco Devices

question

You've just enabled trunking on the fa0/1 port of a Catalyst 2960 switch. By default what traffic can be sent across this interface?

answer

only 802.1Q traffic

question

You would like to manually configure the trunk status on each port for Switch A so that the appropriate type is selected and so that a trunking protocol is not used. Match the command on the left with the correct port on Switch A 1.Interface Fa0/1 2. Interface Fa0/2 3. Interface Fa0/3 4. Interface Fa0/4

answer

1. switchport mode access 2. switchport mode access 3. switchport mode trunk 4. switchport mode access

question

You have a Catalyst 2950 switch with three defined VLANS: VLAN1, VLAN3, and VLAN5. You connect the switch to another switch using the Fa0/1 interface and use the switchport mode trunk command for Fa0/1. Assuming the other switch has the default configuration what will now pass through the Fa0/1 switch?

answer

Traffic for all VLANS defined on the switch

question

You want to verify that trunking is enabled between the Catalyst 2950XL switch and the Cisco 2600 router. Which command must you enter?

answer

show interface fa0/1 trunk

question

You want to get a list of all ports on your switch that are currently trunking. Which command should you use?

answer

show interface trunk

question

You are implementing a static VLAN trunking configuration on a Catalyst 3550 switch. You would like to keep the switch from tagging packets from VLAN3 as they leave FastEthernet 0/1. Which commands would you use?

answer

Switch(config)# int fa 0/1 Switch(config)# switchport mode trunk Switch(config)# switchport trunk native vlan 3

question

Which of the following is true concerning native VLAN and VLAN trunking?

answer

With 802.1Q trunking frames from the native VLAN are not tagged Frames are placed into the native VLAN when they enter an 802.1Q trunking interface but do not have a and 802.1Q header If the native VLAN on one end of the trunk is different than the native VLAN on the other end the traffic of the native VLAN's on both sides cannot be transmitted correctly on the trunk.

question

You are adding a new switch to your VLAN network. You want to be able to create modify and delete local VLANs on this new switch and forward VTP advertisements but you do not want the local VLAN's to be advertised to other switches on the network. Which command should you use on the new switch before introducing it to the network?

answer

vtp mode transport

question

You have a VLAN network and your primary switch just failed. You must replace it. You decide to enable one of your existing switches to create modify and delete VLANs for the network. Which command should you use on the existing switch to promote it to perform these functions?

answer

vtp mode server

question

What is the default VTP mode for a Catalyst 2950 switch?

answer

server

question

You have three switches connected together. The VTP configuration of each status is shown. You notice that when you make VLAN configuration change on switch A that the change is not passed to switch C. What should you do to correct this problem?

answer

On switch B change the VTP domain name to CCNA Connect switch C directly to switch A

question

You have three switches connected together. What is true of the network configuration of these switches?

answer

The switches must be manually configured before trunking will happen VLAN changes made on Switch A will not be forwarded through Switch B to switch C

question

You are configuring VTP for your network. All switches are on the same domain. You want to use VTP pruning and passwords. What should you do ?

answer

Configure the password on each switch Enable VTP pruning on one VTP server

question

How does VTP use the VTP password?

answer

Passwords are sent in all VTP advertisements and validate that the packet came from a trusted source

question

Which three statements about creating VLANs with Cisco switches are true?

answer

Each VLAN runs an independent copy of the Spanning Tree algorithm By default all Cisco switches run the spanning tree protocol All devices connected to the same switchport are on the same VLAN

question

Multiple VLANs have been created on a switched internetwork. How will these VLANs effect the function of the Spanning Tree protocol?

answer

A separate spanning tree exists for each VLAN

question

What problem does the Spanning Tree protocol prevent?

answer

It prevents message loops from developing when a switch or bridge is connected to the same location more than once

question

Which of the following are advantages of using the Spanning Tree Protocol (STP) in network segmented bridges?

answer

STP identifies the most efficient path through a bridged network STP prevents message loops from forming STP lets you provide redundancy by using more than one connection between devices which makes your network more stable

question

Which statements accurately describes port states of both bridges and switches?

answer

In the learning state the MAC address table can be populated but frames not forwarded. Ports in a blocked state still receive BPDUs

question

A switch running STA is a backup bridge. What state is it in?

answer

Blocking

question

Switches running the STA are in the process of exchanging BPDUs and defining their roles. In what state are the switches?

answer

Listening

question

A switch running STA is in a learning state. A message arrives at the switch destined for a different network segment. Which of the following best describes what the switch will do?

answer

It places the source address and segment in its database but does not forward the message

question

A switch running STA is in the listening state. A message arrives at the switch destined for a different network segment. Which of the following best describes what the switch will do?

answer

It does not record the address or segment information. It does not forward the message

question

You have just connected four switches as shown in the Exhibit. Assuming the default switch configuration, how can your force Switch C to become a root bridge?

answer

Configure a priority number of 4096 for switch C

question

You have three switches configured as shown in the exhibit. For each port identify the port role and status after spanning tree convergence by matching the port states on the left with the port states on the graphic 1. A Gi0/1 2. A Gi0/2 3. B Gi0/1 4. B Gi0/2 5. C Gi0/1 6. C Gi0/2

answer

1. Altn BLK 2. Root FWD 3. Desg FWD 4. Desg FWD 5. Desg FWD 6. Root FWD

question

You have two switches connected as shown in the exhibit. You would like to configure rapid spanning tree on Switch A. On which ports would you use portfast feature?

answer

Fa0/1 and Fa0/2

question

You have been using PVST+ on your Cisco switches. You'd like to start using rapid spanning tree instead. Which of the following would you do?

answer

On each switch use no spanning-tree uplinkfast On each switch configure the mode with the spanning-tree rapid-pvst command

question

You need to configure spanning tree on a Cisco 2960 switch. You'd like to use a spanning tree protocol that uses the 802.1w standards. You'd like to take advantage of the fast convergence when the trunk link goes down and fast transition to forwarding state for edge links. Which commands will be part of your configuration?

answer

switch(config-if)#spanning-tree portfast switch(config)#spanning-tree mode rapid-pvst

question

You have three switches configured as shown in the Exhibit. For each port, identify the port role and status after spanning tree convergence by matching the port states on the left with the ports on the graphic. 1. A Gi0/1 2. A Gi0/2 3. B Gi0/1 4. B Gi0/2 5. C Gi0/1 6. Gi0/2

answer

1. Root FWD 2. Desg FWD 3. Root FWD 4. Altn BLK 5. Desg FWD 6. Desg FWD

question

You are configuring two catalyst 3550 switches with redundant connections. To increase the available traffic bandwidth between the switches you should configure the switches to actively negotiate an Ethernet using PAgP channel group 5. Which command would you use for each redundant link?

answer

Switch(config-if)#channel-group 5 mood desirable

question

You are configuring two Catalyst 2960 switches with redundant connections. To reduce the spanning tree convergence times, you should configure the switches to actively negotiate an EthernetChannel using LACP channel group 4.

answer

Switch(config-if)#channel-group 4 mode active

question

What is the effect of using the channel-group 3 mode desirable interface configuration command?

answer

A channel is formed with another port group interface in either auto or desirable mode The command configures the interface to actively negotiate the EtherChannel for PAgP channel group 3

question

What is the effect using the channel-group 2 mode passive interface configuration command?

answer

A channel is formed with another port group interface only if it is in active mode The command configures the interface in a passive negotiating state and forms an EtherChannel if the port receives LACP packets

question

You have configured an Ethernet Channel between two switches. To verify the EtherChannel you use the show etherchannel summary command and receive the output as shown in the exhibit. Which of the following is true?

answer

GigabitEthernet 0/1 and 0/2 are part of channel group 1 The etherchannel is using the 802.3ad standard

question

You are configuring an 1841 Cisco router for inter-VLAN communication. You would like to use one physical interface to handle the incoming VLANS 2 and 10. The VLANs are encapsulated with 802.1Q tags. Which command(s) would you use to configure the physical interface for VLAN2?

answer

router(config-subif)#encapsulation dot1q2 router(config-subif)#ip address 172.16.2.1 255.255.255.0 router(config-subif)#int fa 0/1.2

question

You are configuring an 1841 Cisco router for inter-VLAN communication. You would like to use one physical interface to handle the incoming VLANS 2 and 10. The switch connected to the router is sending 802.1Q encapsulated traffic for VLAN 2 but is not encapsulating VLAN 10. Which command would you use to ensure that the router correctly handles traffic coming from the switch?

answer

router(config-subif)#encapsulation dot1q 10 native

question

Which of the following best describes a Switch Virtual Interface (SVI) on a multi-layer switch?

answer

A SVI is mostly implemented to interconnect the VLANs between distribution and access switches in a multi-switched network A multi-layer switch treats a SVI as a physical link through which it can route traffic

question

You have configured inter-VLAN routing on a Catalyst 3550 switch. You enter the show ip route command and receive the output as shown in the exhibit. Which of the following is true?

answer

Traffic sent within VLANS 2, 3, and 11 will be routed on the 3550 switch VLAN 11 has a virtual IP address in the 10.1.11.0 network

question

You have configured inter-VLAN routing on a Catalyst 3550 switch. Hosts belonging to VLAN 2 cannot contact servers belonging to VLAN 3. To troubleshoot the issue you enter the show ip route command and receive the output as shown in the exhibit. Which of the following may be true?

answer

The VLAN 2 interface is not enabled with the no shutdown command VLAN 2 does not have an interface IP address

question

You have configured inter-VLAN routing on a Catalyst 3500 switch. You enter the show run command and receive output as shown in the exhibit. Which of the following is true?

answer

Interface VLAN 2 is enabled with the no shutdown interface configuration command Traffic sent from VLAN 2 to VLAN 3 will not reach VLAN 3

question

You have configured an 1841 Cisco router for inter-VLAN communication. You enter the show run command and receive the output as shown in the exhibit. Which of the following is true?

answer

The router is using two FastEthernet 0/0 subinterfaces for VLANS 2 and 3 The switch connected to the router's FastEthernet 0/0 interface is not encapsulating VLAN 2 traffic The router is configured to use 802.1Q encapsulation for inter-VLAN routing

question

You need to enable hosts on your network to find the IP address of logical names such as srv1.myserver.com Which device would you use?

answer

DNS server

question

You want to implement a protocol on your network that allows computers to find the IP address of a host from a logical name. Which protocol should you implement?

answer

DNS

question

Listed below are several DNS record types. Match the record the on the left with its function on the right.

answer

Points a hostname to an IPv4 A Provides alternate names to hosts that already have a host record. CNAME Points an IP address to a hostname PTR Points a hostname to an IPv6 address AAAA identifies servers that can be used to deliver mail. MX

question

Listed below are several DNS record types. Match the record type on the left with its function on the right.

answer

Identify a domain controller- SRV identify a mail server- MX Map a host name to an IPv4 address- A Map an IPv4 address to a host name- PTR

question

which of the following services automatically creates and deletes host records wen an ip address lease is created or released?

answer

DYNAMIC DNS

question

If dynamic DNS is being used, which of the following events will cause a dynamic update of the host records?

answer

The DHCP server renews an ip address lease The ipconfig/release command is entered on a workstation.

question

OSI Model (Open Systems Interconnection Reference Model)

answer

model for understanding and developing computer-to-computer communication developed in the 80s by ISO; divides networking functions among 7 layers

question

Physical Layer

answer

Responsible for the physics of the network (Signaling, Cabling, Connectors)

question

Data Link Layer

answer

The second layer in the OSI model. bridges the networking media with the Network layer. Its primary function is to divide the data it receives from the Network layer into frames that can then be transmitted by the Physical layer.

question

Network Layer

answer

Fragments frames to traverse to different networks. Also introduces Internet Protocol (IP)

question

Internet Protocol (IP)

answer

The method of communication that allows information to be exchanged across the Internet and across varying platforms that may be accessing or sending information.

question

Transport Layer

answer

Responsible for moving "parcels" using TCP or UDP

question

Session Layer

answer

Communication management between devices (Start, Stop, Restart)

question

Presentation Layer

answer

Responsible for Character Encoding and Application Encryption. Often combined with the Application Layer

question

Application Layer

answer

The only normally visible layer of the OSI Model

question

TCP (Transmission Control Protocol)

answer

A communications protocol that uses packet switching to facilitate the transmission of messages; the protocol used with the Internet.

question

UDP (User Datagram Protocol)

answer

A connectionless TCP/IP protocol for fast transport but no guarantee of delivery.

question

Match each decimal value on the left with the corresponding hexadecimal value on the right.

answer

11:17 B:11 D:13 F:15 C:12 10:16

question

What is the binary format for the following decimal IP address? 131.9.202.111

answer

10000011.00001001.11001010.01101111

question

What is the decimal format for the following IPaddress

answer

206.58.170.67

question

You have implemented a network where hosts are assigned specific roles, such as for file sharing and printing. Other hosts access those resources but do not host services of their own. What type of network do you have? Client/server Peer-to-peer Intranet Extranet

answer

Client/server Explanation In a client/server network, hosts have specific roles. For example, some hosts are assigned server roles which allows them to provide network resources to other hosts. Other hosts are assigned client roles which allows them to consume network resources. In a peer-to-peer network, each host can provide network resources to other hosts or access resources located on other hosts, and each host is in charge of controlling access to those resources. An intranet is a private network that uses Internet technologies. Services on an intranet are only available to hosts that are connected to the private network. An extranet is a private network that uses Internet technologies, but whose resources are made available to external (but trusted) users. For example, you might create a Web site on a private network that only users from a partner company can access.

question

You have implemented a network where each device provides shared files with all other devices on the network. What type of network do you have? Multiple access Peer-to-peer Polling Client/server

answer

Peer-to-peer Explanation In a peer-to-peer network, each host can provide network resources to other hosts or access resources located on other hosts, and each host is in charge of controlling access to those resources. In a client/server network, hosts have specific roles. For example, some hosts are assigned server roles which allows them to provide network resources to other hosts. Other hosts are assigned client roles which allows them to consume network resources. Polling is a media access method where a single device grants permission to other devices to access the network. Multiple access describes a media access method where each device determines when the medium is free.

question

You have a network that uses a logical bus topology. How do messages travel through the network? Messages are broadcast to all devices connected to the network. Messages travel from one device to the next until they reached the destination device. Messages are sent to a central device which then forwards the message to the destination device. Messages are sent directly to the correct destination device.

answer

Messages are broadcast to all devices connected to the network. Explanation Messages sent using a physical bus topology are broadcast to all devices in the network. The device in the middle of the star (typically a hub), receives the message and forwards it on to all other devices.

question

In which of the following topologies does each device on the network act as a repeater, sending the signal to the next device? Bus Tree Star Ring

answer

Ring Explanation In ring topologies, each device on the network acts as a repeater to send the signal to the next device.

question

Which of the following topologies connects each device to a neighboring device? Bus Tree Ring Star

answer

Ring Explanation In ring topologies, each device is connected to a neighboring device, until a ring is formed.

question

You have a network that uses a logical ring topology. How do messages travel through the network? Messages are sent directly to the destination device only. Messages are sent to a central device which then forwards the message to the destination device. Messages travel from one device to the next until they reached the destination device. Messages are sent to all devices connected to the network.

answer

Messages travel from one device to the next until they reached the destination device. Explanation In a logical ring topology, messages travel to each device in turn. If the message is not intended for that device, the message is forwarded to the next device on the network.

question

You have a small network that uses a hub to connect multiple devices. What physical topology is used? Mesh Ring Star Bus

answer

Star Explanation A hub creates a network with a physical star topology. The physical star topology uses a logical bus topology, where messages are sent to all devices connected to the hub. A mesh topology is a series of point-to-point links between devices. A ring topology uses a central device called an MSAU.

question

You have been asked to implement a network infrastructure that will accommodate failed connections. Which of the following network topologies provides redundancy for a failed link? Star Mesh Bus Ring

answer

Mesh Explanation In a mesh topology, each network device is interconnected to all other network nodes. This creates multiple data paths and in the event of a failed link, the data has an alternate route to arrive at its destination. The star topology connects network devices to the network with a single patch cable and the failure of a patch cable will make the connected device unavailable. The bus topology has a single point of failure, if there is a break in the network media, the network will be unavailable. A single break in a physical ring topology will disable the network.

question

You have implemented an adhoc wireless network that doesn't employ a wireless access point. Every wireless network card can communicate directly with any other wireless network card on the network. What type of physical network topology has been implemented in this type of network? Mesh Ring Star Tree Bus

answer

Mesh Explanation This type of network uses a physical mesh topology. The key characteristics of a mesh topology are: • There's no central connecting point. • Any host can communicate directly with any other host on the network. A mesh network, such as this one, is usually impractical on a wired network. Each host would have to have a separate, dedicated network interface and cable for each host on the network. However, a mesh topology can be implemented with relative ease on a wireless network due to the lack of wires.

question

You want to implement a fault tolerant topology as you interconnect routers on your wide area network. Which of the following would meet your needs? Bus Ring Mesh Star

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Mesh Explanation A mesh topology has multiple connections at each node, increasing connectivity fault tolerance. None of the other topologies have native fault tolerance built in.

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Which of the following topologies connects all devices to a trunk cable? Tree Bus Star Ring

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Bus Explanation The bus topology connects all devices to a trunk cable.

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What device is used to create a physical star topology? Switch Firewall Bridge Router

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Switch Explanation A physical star topology uses a switch or a hub. Routers are used to connect multiple subnets together. A firewall is a router that performs filtering on packets or other information contained in network communications.

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Which of the following topologies connects each network device to a central hub? Star Mesh Bus Ring

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Star Explanation Star topologies connect each device on the network to a central hub.

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Which of the following protocols stores email on the mail server and gives users a choice to download mail or keep it on the server? (Select 2) POP3 SMTP NTP IMAP4

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IMAP4 & POP3 Explanation IMAP4 allows a mail server to hold messages for a client. POP3 is a simpler protocol than IMAP4 that downloads email messages and deletes them from the server by default, but most newer POP3 clients provide an option to leave mail on the server after download. SMTP allows a user to send email to a server. The NTP protocol synchronizes the clocks of all computers on a network.

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Which protocol is used on the World Wide Web to transmit Web pages to Web browsers? SMTP HTML HTTP NNTP

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HTTP Explanation HTTP or HyperText Transfer Protocol is used by Web servers and browsers to transmit Web pages on the Internet. This is often confused with HTML or HyperText Markup Language which is the markup language used to create Web content.

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You want to transfer a file from a UNIX server to a Windows 2000 computer. Which of the following utilities could you use to do this? Select all that apply. Netstat TFTP FTP Tracert Telnet NBTSTAT

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FTP & TFTP Explanation UNIX computers use TCP/IP, as do Windows 2000 computers. Therefore, the TCP/IP utilities FTP and TFTP will both allow you to transfer files.

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Which of the following TCP/IP protocols do email clients use to download messages from a remote mail server? SNMP POP3 SPC FTP SMTP

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POP3 Explanation The POP3 protocol is part of the TCP/IP protocol suite and used to retrieve email from a remote server to a local client over a TCP/IP connection. SNMP is a protocol used to monitor network traffic. SMTP is a TCP/IP protocol used to send email. FTP is used to transfer files.

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You want to allow your users to download files from a server running the TCP/IP protocol. You want to require user authentication to gain access to specific directories on the server. Which TCP/IP protocol should you implement to provide this capability? HTML FTP IP HTTP TFTP TCP

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FTP Explanation You should implement the File Transfer Protocol (FTP). It enables file transfers and supports user authentication. The Trivial File Transfer Protocol (TFTP) enables file transfer, but does not support user authentication.

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Which of the following protocols allows hosts to exchange messages to indicate problems with packet delivery? IP TCP ARP DHCP IGMP ICMP

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ICMP Explanation The Internet Control Message Protocol (ICMP) allows hosts to exchange messages to indicate the status of a packet as it travels through the network.

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Your company has just acquired another company in the same city. You are given the task of integrating the two email systems so that messages can be exchanged between the email servers. However, each network uses an email package from a different vendor. Which TCP/IP protocol will enable messages to be exchanged between systems? IMAP4 SMTP ICMP POP3 FTP

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SMTP Explanation The Simple Mail Transfer Protocol (SMTP) specifies how messages are exchanged between email servers. POP3 and IMAP4 are used by email clients to download email messages from email servers. FTP is a file transfer protocol. ICMP is used in ping and traceroute for communicating network communication information.

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You have a large TCP/IP network and want to keep hosts' real time clock synchronized. What protocol should you use? SMTP NNTP SAP NTP SNMP

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NTP Explanation The network time protocol (NTP) lets you keep clocks synchronized.

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What protocol sends email to a mail server? SNMP POP3 SMTP FTP TFTP

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SMTP Explanation SMTP sends email to a mail server.

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You are asked to recommend an email retrieval protocol for a company's sales team. The sales team needs to access email from various locations and possibly different computers. The sales team does not want to worry about transferring email messages or files back and forth between these computers. Which email protocol was designed for this purpose? IMAP SMTP MFTP POP4 POP3

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IMAP Explanation The Internet Message Access Protocol (IMAP) is an email retrieval protocol designed to enable users to access their email from various locations without the need to transfer messages or files back and forth between computers. Messages remain on the remote mail server and are not automatically downloaded to a client system. POP3 is an email retrieval protocol that downloads and then deletes messages from a mail server. POP3 is well suited for reading email offline? however, you need to go online when you want to receive and send new messages. Once your new messages have been downloaded to your computer you can log off to read them. This option is often used when email is received over a dialup connection.

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Which OSI model layer is responsible for guaranteeing reliable message delivery? Transport Application Data Link Session

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Transport Explanation The Transport layer is responsible for connection services that provide reliable message delivery through error detection and correction mechanisms. Specifically, the TCP protocol provides these services. The Application layer integrates network functionality into the host operating system, and enables network services. The Session layer's primary function is managing the sessions in which data is transferred. The Data Link layer defines the rules and procedures for hosts as they access the Physical layer.

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You are an application developer and are writing a program to exchange video files through a TCP/IP network. You need to select a transport protocol that will guarantee delivery. Which TCP/IP protocol would you implement that provides this capability? RIP TCP IP FTP UDP TFTP

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TCP Explanation Write the application to use the Transmission Control Protocol (TCP). TCP guarantees delivery through error checking and acknowledgments.

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Which three of the following functions are performed by the OSI Transport layer? Reliable message delivery Format packets for delivery through the media Data segmentation and reassembly End-to-end flow control Path identification and selection Control media access, logical topology, and device identification Consistent data formatting between dissimilar systems

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Reliable message delivery, Data segmentation and reassembly, & End-to-end flow control Explanation The Transport layer is responsible for taking upperlayer data, breaking it into segments, and providing for reliable communications through end-to-end flow control and error correction and detection. Transmitting messages through the media is performed at the Physical layer. Media access, logical topology, and device identification occurs at the Data Link layer. Path identification and selection is a function of the Network layer. Data formatting is performed at the Presentation layer.

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In the OSI model, what is the primary function of the Network layer? Transmits data frames Ensures that packets are delivered with no loss or duplication Routes messages between networks Allows applications to establish, use, and end a connection

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Routes messages between networks Explanation The Network layer is responsible for routing messages between networks.

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Which of the following functions are performed at the Physical layer of the OSI model? Data translation Movement of data across network cables Conversation identification Enablement of network services Provision of an environment in which to run network applications

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Movement of data across network cables Explanation The Physical layer is concerned with how to transmit data and how to connect network hosts.

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In the OSI model, which of the following functions are performed at the Application layer? (Select all that apply.) Data translation Enabling communication between network clients and services Conversation identification Integration of network functionality into the host operating system

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Enabling communication between network clients and services Integration of network functionality into the host operating system Explanation The Application layer enables network services, and integrates network functionality into the host operating system. Applications actually run above the OSI Application layer. Conversation identification is accomplished at the Session layer through connection or transaction ID numbers. Data translation is performed at the Presentation layer.

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Which two of the following are included as part of Data Link layer specifications? Composition of electrical signals as they pass through the transmission medium. Controlling how messages are propagated through the network. Synchronizing individual bits as they are transmitted through the network. Identifying physical network devices.

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Controlling how messages are propagated through the network. Identifying physical network devices. Explanation The Data Link layer controls identifying devices on a network as well as how messages travel through the network (the logical topology). The other functions listed here are performed by the Physical layer.

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Which of the following tasks is associated with the Session layer? Connection establishment Acknowledgement coordination Transmission synchronization Host ID number assignment

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Connection establishment Explanation Connection establishment is controlled through Session layer protocols.

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What is the basic purpose of the OSI Physical layer? Defines basic physical structures, such as disks. Coordinates rules for managing network servers. Coordinates rules for routing packets. Coordinates rules for transmitting bits.

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Coordinates rules for transmitting bits. Explanation The OSI Physical layer coordinates rules for transmitting bits.

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Which of the following are functions of the MAC sublayer? (Select two.) Mapping hardware addresses to linklayer addresses Defining a unique hardware address for each device on the network Creating routing tables based on MAC addresses Letting devices on the network have access to the LAN

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Defining a unique hardware address for each device on the network Letting devices on the network have access to the LAN Explanation The MAC sublayer defines a unique MAC or datalink address for each device on the network. This address is usually assigned by the manufacturer. The MAC sublayer also provides devices with access to the network media.

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The Data Link Layer of the OSI model is comprised of two sublayers. What are they? (Select two.) LLC DLC LAT MAC SAN

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Explanation The Data Link layer is split into the following sublayers: • Logical Link Control (LLC) Sublayer Provides the operating system link to the device driver. • Media Access Control (MAC) Sublayer Translates generic network requests into device specific terms.

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In the OSI model, which of the following functions are performed at the Presentation layer? (Select two.) Maintain separate client connections Handle general network access, flow control, and error recovery Encrypt and compress data Transmit data frames Specify data format (such as file formats) Provide network services

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Encrypt and compress data Specify data format (such as file formats) Explanation The Presentation layer encrypts data, changes and converts character sets, and compresses data. File formats (such as .jpg, .wmv, and .wav) are part of the Presentation layer. The Application layer provides network services. The Session layer maintains separate client connections through session IDs, and maintains those sessions. Flow control and error detection are provided at both the Transport layer and the Data Link layer. Transmitting frames happens at the Physical layer.

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Which of the following protocols includes extensive error checking to ensure that a transmission is sent and received without mistakes? TCP UDP UDB UCP

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TCP Explanation The TCP protocol includes error checking.

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The UDP transport protocol provides which of the following features? (Select all that apply.) Guaranteed delivery Low overhead Sequence numbers and acknowledgements Connectionless datagram services

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Low overhead Connectionless datagram services Explanation UDP is a connectionless protocol used by applications that need low overhead and do not require guaranteed delivery.

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You are adding new wires in your building for some new offices. The building has a false ceiling that holds the lights. You would like to run your Ethernet cables in this area. Which type of cable must you use? Plenum PVC Fiber optic Cat 5e or Cat 6e STP

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Plenum Explanation Plenum cable is fire resistant and nontoxic? it must be used when wiring above ceiling tiles. PVC cable cannot be used to wire above ceilings because it is toxic when burned. Cat 5e cables provide better EMI protection than Cat 5 cables, and Cat 6e cables are an improvement over Cat 6 specifications, but neither are a requirement for using in a ceiling area. If the area has a lot of EMI, you might consider using STP or fiber optic cables, but this would not be a requirement just because wires were in a ceiling area. Typically, you can avoid EMI sources by rerouting cables.

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In which of the following situations might you use an RJ11 connector? You want to connect the 10BaseT network card in your computer to a switch. You want to connect your computer to the Internet with a dialup connection. You want to upgrade your 10BaseT network to 100BaseT. You want to test a network cable to see if there is a break in the line.

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You want to connect your computer to the Internet with a dialup connection. Explanation RJ11 connectors are typically used for telephones and modems.

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You are installing networking wiring for a new Ethernet network at your company's main office building. The project specifications call for Category 5 UTP network cabling and RJ45 wall jacks. Near the end of the project, you run out of wire before the last few runs are complete. You have a spool of Category 3 network cable in storage. Upon investigation, it appears very similar to Category 5 wiring. Should you substitute Category 3 cabling for Category 5 cabling to finish the project? No, the sheath surrounding Category 5 cable is much thicker? creating an extra layer of shielding to reduce crosstalk and support higher data rates. Yes, you can substitute Category 5 wiring with Category 3 wiring, as they are electrically identical. No, Category 5 cabling has more twists per inch than Category 3 cabling to reduce crosstalk and support higher data rates. No, Category 3 cabling doesn't support RJ45 connectors. No, Category 5 cabling uses a thicker copper wire than Category 3 cable? enabling higher data transmission rates.

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No, Category 5 cabling has more twists per inch than Category 3 cabling to reduce crosstalk and support higher data rates. Explanation While Category 3 and Category 5 cabling may appear similar physically, they are electrically different. Category 5 cabling is twisted much tighter than Category 3 cabling. This reduces

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When would you typically use an RJ11 connector? When using single mode fiber optic cables. When connecting a phone to a phone line. When using multimode fiber optic cables. When using RG6 cables. When using Cat 3 cables. When using Cat 5 or higher cables.

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When connecting a phone to a phone line. Explanation An RJ11 connector is used for connecting analog telephones to the telephone jacks. Cat 3, Cat 5, and higher twisted pair cables use RJ45 connectors. Coaxial cables use Ftype or BNC connectors. Fiber optic cables use a variety of connectors (RC, RT, LC, MTRJ).

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Which of the following applications is more likely to justify the investment in Category 6 cable? Instant Messaging Printing Email Streaming video

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Streaming video Explanation Category 6 cable is specified to extend the available bandwidth from 100 MHz to 200 MHz. This serves as the basis for greater capacity, throughput and reliability. Producing high quality streaming multimedia usually requires consistent highspeed network bandwidth. Email and messaging are typically low bandwidth applications consisting of small, brief transmissions. Printing typically consists of greater amounts of data being transferred, however printing is highly amenable to delays and buffering and usually will not suffer any noticeable effects with decreased bandwidth.

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Which of the following cable types often includes a solid plastic core? Cat 3 Cat 6 Cat 5e Cat 5

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Cat 6 Explanation Cat 6 cables include a solid plastic core that keeps the twisted pairs separated and prevents the cable from being bent too tightly.

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You have just signed up for a broadband home Internet service that uses coaxial cable. Which connector type will you most likely use? RJ45 SC Ftype BNC ST RJ11

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F-type Explanation Use an F-type connector for broadband cable connections that use coaxial cable. Use a BNC connector for 10Base2 Ethernet networks. Use an RJ11 connector for modem connections to a phone line. Use an RJ45 connector for an Ethernet network that uses twisted pair cable. Use ST and SC connectors for fiberoptic cables.

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You have a small home network connected to the Internet using an RG6 cable. You need to move the router connecting the network to the Internet, but can't find any RG6 cable. Which cable types could you use instead? RG8 or RG58 RG58 or RG59 RG8, RG58, or RG59 RG8 RG59 RG58

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RG59 Explanation RG6 has an impedance rating of 75 ohms. When using coaxial cables, it is important to use cables with the same impedance rating. Only RG59 is rated for 75 ohms. RG8 and RG58 are rated for 50 ohms.

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F-type connectors are typically used with cables using which of the following standards? (Select two.) RG58 Cat 6e Cat 5e RG6 Cat 5 RG59

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RG6 & RG59 Explanation F-type connectors are used with coaxial cable, and are typically used for cable TV and satellite installations using RG6 or RG59 cables. RG58 cables typically use BNC connectors and cables are used for 10Base2 Ethernet. Cat 5, 5e, and 6e cables use RJ45 connectors.

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Which of the following cable classifications are typically used for cable and satellite networking with coaxial cables? (Select two.) RG6 RG8 RG58 RG59

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RG6 & RG59 Explanation Both RG6 and RG59 can be used for cable and satellite networking applications, although RG6 has less signal loss than RG59, and is a better choice for networking applications, especially where longer distances (over a few feet) are involved. Both RG6 and RG59 have an impedance rating of 75 ohms. RG8 and RG58 have an impedance rating of 50 ohms and were used with 10 Mbps Ethernet.

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Of the following cables, which offer the best protection against EMI? Cat 5e Cat 5 Cat 6e RG6

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RG6 Explanation Coaxial cable offers better protection against EMI than twisted pair cables. Coaxial cable has a mesh conductor which provides a ground and protects against EMI. In general, the higher the twisted pair cable standard, the better protection against some forms of EMI (typically crosstalk). For twisted pair, use shielded twisted pair instead of unshielded twisted pair. Use fiber optic for the best protection against EMI.

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Which of the following are characteristics of coaxial network cable? (Choose three.) It uses two concentric conductors made from plastic or glass which conduct light signals. It has a conductor made from copper in the center of the cable. It is composed of four pairs of 22-gauge copper wire. The conductors within the cable are twisted around each other to eliminate crosstalk. It uses two concentric metallic conductors. The ends of the cable must be terminated. It uses RJ45 connectors

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It has a conductor made from copper in the center of the cable. It uses two concentric metallic conductors. The ends of the cable must be terminated. Explanation Coaxial cable is composed of a central copper conductor surrounded by an insulator which is then surrounded by a second metallic mesh conductor. The name coaxial is derived from the fact that both of these conductors share a common axis. When using coaxial cable, both ends of the cable must be terminated.

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Which of the following are characteristics of an LC fiber optic connector? (Choose two.) They use a stainless steel housing. They are threaded. They can be used with either fiber optic or copper cabling. They use a one-piece bayonet connecting system. They use a housing and latch system similar to an RJ45 UTP connector. They are half the size of standard connectors.

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They use a housing and latch system similar to an RJ45 UTP connector. They are half the size of standard connectors. Explanation LC fiber optic connectors are small? about half the size of other fiber optic connectors. Their appearance is similar to a typical RJ45 connector used with UTP wiring. Like an RJ45 connector, it uses a small latch to lock the connector in a jack.

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Of the following cables, which offer the best protection against EMI? Cat 5e Cat 5 RG6 Single mode fiber optic

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Single mode fiber optic Explanation Fiber optic cables offer the best protection against electromagnetic interference (EMI).

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Which of the following forms of optical fiber would usually be used to connect two buildings across campus from each other, which are several kilometers apart? Fibre Channel mode Multimode Single mode Dual mode

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Single mode Explanation In this scenario, use single mode fiber optic cables. Fiber optic is graded as single mode or multimode. Single mode consists of a single very thin core which produces fewer reflections. This provides greater effective bandwidth over greater distances. Multimode is less costly than single mode fiber. Multimode transmits multiple light rays concurrently. Multimode is used to transmit over shorter distances as the rays tend to disperse as the transmission distance increases. Fibre channel is a network topology used in storage area networks.

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Which of the following are characteristics of an MT-RJ fiber optic connector? (Select two.) They are used with multifiber fiber optic ribbon cables. They use a nickel-plated housing. They can be used with multimode fiber optic cables. They use a keyed bayonet. They must never be used with singlemode fiber-optic cables. They use metal guide pins to ensure accurate alignment.

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They can be used with multimode fiber optic cables. They use metal guide pins to ensure accurate alignment. Explanation MTRJ connectors can be used with either multimode or single-mode fiber optic cabling. The connector is made from plastic and uses metal guide pins to ensure it is properly aligned in the jack.

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Which of the following is true about single mode fiber optic network cabling? It's less expensive than multimode fiber optic cabling. The central core is smaller than that of multimode fiber optic cabling. The central core is composed of braided plastic or glass fibers. It doesn't support segment lengths as long as that supported by multimode fiber optic cabling. It transmits multiple rays of light concurrently.

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The central core is smaller than that of multimode fiber optic cabling. Explanation Single mode fiber optic cabling transmits a single ray (or mode) of light through glass or plastic fiber. It supports longer transmission distances than multimode fiber optic cable and is also more expensive. It also has a central core that is much smaller than that of multimode fiber optic cabling.

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Which of the following are advantages of using fiber optic cabling for a network, as opposed to other types of cabling? (Select two.) Immunity to electromagnetic interference Lower installation cost Greater cable distances without a repeater Faster installation

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Immunity to electromagnetic interference Greater cable distances without a repeater Explanation Compared to other types of cabling, fiber optic cabling allows greater cable distances without a repeater and is immune to electromagnetic interference. However, installation costs more and takes longer.

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Which of the following connectors is used with fiber optic cables and connects using a twisting motion? F-type SC BNC LC ST

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ST Explanation The ST connector is used with fiber optic cable and uses a twist-type connector. Tip: To remember the difference between ST and SC connectors, associate the T in ST with "twist". SC and LC connectors are used with fiber optic cables but plug in instead of twist. F-type and BNC connectors use a twist to connect, but are used with coaxial cables.

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Which of the following connectors are used with fiber optic cables and include both cables in a single connector? (Select two.) SC BNC ST MTRJ LC

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MTRJ LC Explanation Both the LC and MTRJ connectors have both fiber optic cables in a single connector. ST and SC connectors hold a single strand of fiber optic cable. A cable using either connector has two connectors on each end. A BNC connector is used with coaxial cable.

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Which of the following connectors usually require polishing as part of the assembly process? (Select two.) BNC SC ST IDC AUI

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SC & ST Explanation The fiber optic cable assembly process is more complex than other assemblies. It is necessary to polish the exposed fiber tip to ensure that light is passed on from one cable to the next with no dispersion.

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Which of the following terms identifies the wiring closet in the basement or a ground floor that typically includes the demarcation point? Smart jack IDF 110 block Horizontal cross connect MDF

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MDF Explanation The main distribution frame (MDF) is the main wiring point for a building. The MDF is typically located on the bottom floor or basement. The LEC typically installs the demarc to the MDF. An intermediate distribution frame (IDF) is a smaller wiring distribution point within a building. IDFs are typically located on each floor directly above the MDF, although additional IDFs can be added on each floor as necessary. A horizontal cross connect connects wiring closets on the same floor. A smart jack is a special loopback plug installed at the demarcation point for a WAN service. Technicians at the central office can send diagnostic commands to the smart plug to test connectivity between the central office and the demarc. Use 66 and 110 blocks to connect individual wires within a wiring closet.

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Which of the following methods would you use to create a crossover cable? Use the T568B standard. Use the T568A standard on one connector, and the BLOG convention on the other connector. Use the T568A standard on one connector, and the T568B standard on the other connector. Use the T568B standard on one connector, and the BLOG convention on the other connector. Use the T568A standard.

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Use the T568A standard on one connector, and the T568B standard on the other connector. Explanation The easiest way to create a crossover cable is to arrange the wires in the first connector using the T568A standard and arrange the wires in the second connector using the T568B standard. A crossover cable connects the transmit pins on one connector to the receive pins on the other connector (pin 1 to pin 3 and pin 2 to pin 6).

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When using 110 blocks for connecting Cat5 and higher data cables, which recommendation should you follow? Keep wire pairs twisted up to within one-half of an inch of the connector. Use C5 connectors. Connect wires using the T568B standard. Connect wires using the T568A standard.

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Keep wire pairs twisted up to within one-half of an inch of the connector. Explanation When using for Cat5 (or higher) wiring, be sure to preserve the twists in each wire pair to within one-half of an inch of the connecting block. Use C4 connectors to connect four pairs of wires. When connecting data wires on a 110 block, you typically connect wires in the following order: • White wire with a blue stripe, followed by the solid blue wire. • White wire with an orange stripe, followed by the solid orange wire. • White wire with a green stripe, followed by the solid green wire. • White wire with a brown stripe, followed by the solid brown wire. T568A and T568B are used to connect wires within an RJ45 connector when making drop cables.

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You are building network cables and attaching RJ45 connectors to each end. Which tool do you need for this task? Vampire taps Crimping tool Punch down tool Needle nose pliers

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Crimping tool Explanation You should use a crimping tool designed for RJ45 connectors to attach connectors to UTP cable.

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You have a network that occupies both floors of a building. The WAN service provider has installed the line for the WAN service into the building in a wiring closet on the main floor. You have a second wiring closet on the second floor directly above the wiring closet that holds the demarc. Which of the following terms describes the closet on the second floor? Vertical cross connect Demarc extension MDF IDF Horizontal cross connect

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IDF Explanation An intermediate distribution frame (IDF) is a smaller wiring distribution point within a building. IDFs are typically located on each floor directly above the MDF, although additional IDFs can be added on each floor as necessary. The main distribution frame (MDF) is the main wiring point for a building. The MDF is typically located on the bottom floor or basement. The LEC typically installs the demarc to the MDF. A vertical cross connect connects the MDF on the main floor to IDFs on upper floors. Cabling runs vertically (up and down) between the MDF and the IDFs. A horizontal cross connect connects IDFs on the same floor. Cabling runs horizontally (sideways) between the IDFs. A demarc extension extends the demarcation point from its original location to another location within the building.

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What tool should you use to extend network services beyond the demarc? Media certifier Tone generator Crimper Punchdown tool

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Punchdown tool Explanation A demarc is the location where the local network ends and the telephone company's network begins. This location is usually at a punch down block in a wiring closet. You use a punchdown tool to attach wires to the punch down block.

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Which of the following describes the point where the service provider's responsibility ends and the customer's responsibility begins for installing and maintaining wiring and equipment? Smart jack Punchdown block IDF Demarc Vertical cross connect

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Demarc Explanation When you contract with a local exchange carrier (LEC) for data or telephone services, they install a physical cable and a termination jack onto your premises. The demarcation point (demarc) is the line that marks the boundary between the telco equipment and the private network or telephone system. Typically, the LEC is responsible for all equipment on one side of the demarc, and the customer is responsible for all equipment on the other side of the demarc. A smart jack is a special loopback plug installed at the demarcation point for a WAN service. Technicians at the central office can send diagnostic commands to the smart plug to test connectivity between the central office and the demarc. A punchdown block is a block used to connect individual copper wires together. While the demarc might terminate in a punchdown block, punchdown blocks are used within other locations at the customer site. An intermediate distribution frame (IDF) is a smaller wiring distribution point within a building. IDFs are typically located on each floor directly above the main distribution frame (MDF), although additional IDFs can be added on each floor as necessary. A vertical cross connect connects the IDF to the MDF on a different floor.

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You are preparing to attach wires in a 110 block. You want to connect the wires and trim off the excess at the same time. Which of the following should you do? (Select two.) Use a butt set with clips. Use a punchdown tool with a notched blade. Point the cut side of the tool towards the connected end of the wire. Use a punchdown tool with a straight blade. Use a butt set with a jack. Point the cut side of the tool towards the wire end.

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Use a punchdown tool with a notched blade. Point the cut side of the tool towards the wire end. Explanation Use a punchdown tool to connect wires to a 110 or 66 block. When using a punchdown tool, choose the right blade for the job: • Use a notched blade for a 110 block. • Use a straight blade for a 66 block. • For both blade types, you can use the end without a cutting blade if you want to punch down without cutting the wire. When using the cutting blade, point the cut side of the punchdown tool towards the wire end that you want to trim.

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You are making Ethernet drop cables using Cat5e cable and RJ45 connectors. You need to remove the plastic coating over the cable to expose the individual wires. Which tool should you use? Snips Punchdown tool Butt set Cable stripper

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Cable stripper Explanation Use a cable stripper to remove the plastic covering for a cable. Note: When making drop cables or using punchdown blocks, do not remove the plastic covering for individual wires. Use snips to cut cables. Use a punchdown tool to push wires into 66 or 110 blocks and cut wires at the same time. Use a butt set to connect to phone lines to monitor, make, or answer phone calls.

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You have a network that occupies the top floor of a three story building. The WAN service provider has installed the line for the WAN service into the building in a wiring closet on the main floor. What would you use to relocate the WAN line into a wiring closet on your floor? Horizontal cross connect Demarc extension 66 block Smart jack 110 block

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Demarc extension Explanation A demarc extension extends the demarcation point from its original location to another location within the building. The demarc extension typically consists of a single wire bundle that attaches to the existing demarc and supplies a termination point to a different location. You might need a demarc extension if your network occupies an upper floor of a building. The LEC will typically install the demarc into the MDF on the bottom floor, and you will need to install an extension to place the demarc into the IDF on your floor. A horizontal cross connect connects IDFs on the same floor. Cabling runs horizontally (sideways) between the IDFs. A smart jack is a special loopback plug installed at the demarcation point for a WAN service. Technicians at the central office can send diagnostic commands to the smart plug to test connectivity between the central office and the demarc. Use 66 and 110 blocks to connect individual wires within a wiring closet. These blocks can be used to connect devices to the WAN service wiring, but are not typically used for installing a demarc extension.

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You have a network that occupies all three floors of a building. The WAN service provider has installed the line for the WAN service into the building in a wiring closet on the main floor. You have a wiring closet on the two remaining floors directly above the wiring closet on the main floor. What would you use to connect the wiring closets together? Demarc extension Horizontal cross connect Vertical cross connect Smart jack

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Vertical cross connect Explanation A vertical cross connect connects the main distribution frame (MDF) on the main floor to intermediate distribution frames (IDFs) on upper floors. Cabling runs vertically (up and down) between the MDF and the IDFs. A horizontal cross connect connects IDFs on the same floor. Cabling runs horizontally (sideways) between the IDFs. A smart jack is a special loopback plug installed at the demarcation point for a WAN service. Technicians at the central office can send diagnostic commands to the smart plug to test connectivity between the central office and the demarc. A demarc extension extends the demarcation point from its original location to another location within the building. The demarc extension typically consists of a single wire bundle that attaches to the existing demarc and supplies a termination point to a different location. You might need a demarc extension if your network occupies an upper floor of a building. The LEC will typically install the demarc into the MDF on the bottom floor, and you will need to install an extension to place the demarc into the IDF on your floor.

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Which pins in an RJ45 connector are used to transmit data when used on a 100BaseT Ethernet network? (Choose two.) Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8

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Pin 1 & Pin 2 Explanation On a 100BaseT network cable, the RJ45 pinouts are as follows: • Pin 1: Tx+ • Pin 2: Tx- •Pin 3: Rx+ • Pin 4: Unused • Pin 5: Unused • Pin 6: Rx- •Pin 7: Unused • Pin 8: Unused

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You want to use the T568A standard for adding connectors to your Cat5 cable. Starting with pin 1, which order should you use for the wires within the connector? White/orange, orange, white/green, blue, white/blue, green, white/brown, brown White/green, green, white/orange, blue, white/blue, orange, white/brown, brown White/orange, orange, white/green, green, white/blue, blue, white/brown, brown White/blue, blue, white/orange, orange, white/green, green, white/brown, brown

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White/green, green, white/orange, blue, white/blue, orange, white/brown, brown Explanation The T568A standard uses the following order of wires in the connector: White/green, green, white/orange, blue, white/blue, orange, white/brown, brown. The T568B standard switches the orange and green wires (along with their corresponding white wires). Use the order Blue-Orange-Green-Brown (BLOG), with the white wire first, for connecting wires on a 110 punchdown block.

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Which of the following uses metal clips placed over plastic slots for connecting individual copper wires? 25 pair 66 block 100 pair 110 block

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110 block Explanation A 110 block is a punchdown block that uses metal clips fitted over plastic pins. When connecting wires using a 110 block, place the wires in the plastic slots, attach the metal clip, then punch down the connecting cable on the top of the clip. A 66 block uses metal pins for connecting wires. Wires are placed in the pins, and pins within a row are electrically connected. 25 pair and 100 pair are cable bundles that include multiple pairs of copper wires (either 25 pairs of wires or 100 pairs of wires).

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You are connecting Cat5e cables to a 110 block. In what order should you connect the wires to follow standard wiring conventions? White/orange, orange, white/green, blue, white/blue, green, white/brown, brown White/green, green, white/orange, blue, white/blue, orange, white/brown, brown White/blue, blue, white/orange, orange, white/green, green, white/brown, brown White/brown, brown, white/blue, blue, white/orange, orange, white/green, green

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White/blue, blue, white/orange, orange, white/green, green, white/brown, brown Explanation When connecting data wires on a 110 block, you typically connect wires in the following order: • White wire with a blue stripe, followed by the solid blue wire. • White wire with an orange stripe, followed by the solid orange wire. • White wire with a green stripe, followed by the solid green wire. • White wire with a brown stripe, followed by the solid brown wire. Tip: Use BLOG (blue-orange-green) to remember the wire order, and remember to start with the white striped wire first. When adding RJ45 connectors to a drop cable, use one of the following orders, based on the standard you want to follow: • T568A- To use this standard, arrange the wires from pins 1 to 8 in each connector in the following order: GW, G, OW, B, BW, O, BrW, Br. • T568B- To use this standard, arrange the wires from pins 1 to 8 in each connector in the following order: OW, O, GW, B, BW, G, BrW, Br.

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You are working with 25 pair wires and 66 blocks. You have pushed the wires onto the 66 block, but now need to cut off the excess end of each wire. Which tool should you use? Snips Butt set Cable stripper Punchdown tool

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Punchdown tool Explanation Use a punchdown tool to push wires into 66 or 110 blocks and cut wires at the same time. The punchdown tool has a blade on one side the cuts off the excess wires. Use snips to cut cables or wires. However, a punchdown tool would be easier to use for this task than wire snips. Use a cable stripper to remove the plastic covering for a cable. Note: When making drop cables or using punchdown blocks, do not remove the plastic covering for individual wires. Use a butt set to connect to phone lines to monitor, make, or answer phone calls.

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Which of the following is used to terminate individual wires from a 25 pair or 100 pair cable using female RJ45 ports? 66 block 110 block Patch panel Horizontal cross connect

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Patch panel Explanation A patch panel is a device that typically connects individual stranded wires into female RJ45 connectors. For example, you might connect 4 pairs of wires from a punchdown block to a port on the patch panel. On the patch panel, you then connect drop cables (cables with RJ45 connectors) to the patch panel on one end and a computer on the other end. Use 66 and 110 blocks to connect individual wires within a wiring closet. These punchdown blocks connect the individual wires together, but do not terminate in RJ45 connectors. A horizontal cross connect connects IDFs on the same floor.

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You want to use the T568B standard for adding connectors to your Cat5 cable. Starting with pin 1, which order should you use for the wires within the connector? White/blue, blue, white/orange, orange, white/green, green, white/brown, brown White/orange, orange, white/green, blue, white/blue, green, white/brown, brown White/orange, orange, white/green, green, white/blue, blue, white/brown, brown White/green, green, white/orange, blue, white/blue, orange, white/brown, brown

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White/orange, orange, white/green, blue, white/blue, green, white/brown, brown Explanation The T568B standard uses the following order of wires in the connector: White/orange, orange, white/green, blue, white/blue, green, white/brown, brown. The T568A standard switches the green and orange wires (along with their corresponding white wires). Use the order Blue-Orange-Green-Brown (BLOG), with the white wire first, for connecting wires on a 110 punchdown block.

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You have a network that occupies all three floors of a building. The WAN service provider has installed the line for the WAN service into the building in a wiring closet on the main floor. You have a second wiring closet on the main floor. You need to connect the two wiring closets. Which of the following are typically used to connect the two wiring closets? (Select two.) Demarc extension 25 pair Horizontal cross connect Smart jack Vertical cross connect

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25 pair Horizontal cross connect Explanation A horizontal cross connect connects wiring closets on the same floor. 25 pair or 100 pair wiring punched down into 66 or 110 blocks are often used to connect the wiring closets together. A vertical cross connect connects the IDF to the MDF on a different floor. The demarcation point (demarc) is the line that marks the boundary between the telco equipment and the private network or telephone system. A demarc extension extends the demarcation point from its original location to another location within the building. A smart jack is a special loopback plug installed at the demarcation point for a WAN service. Technicians at the central office can send diagnostic commands to the smart plug to test connectivity between the central office and the demarc.

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A host wants to send a message to another host with the IP address 115.99.80.157. IP does not know the hardware address of the destination device. Which protocol can be used to discover the MAC address? DNS IGMP BOOTP DHCP ARP ICMP

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ARP Explanation Hosts use the Address Resolution Protocol (ARP) to discover the hardware address of a host.

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Which of the following is a valid MAC address? 95ABC2F4.ABC5.569D.43BF AB.07.CF.62.16.BD FABC.875E.9BG6 145.65.254.10

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AB.07.CF.62.16.BD Explanation MAC addresses are comprised of 12 hexadecimal digits (ranging from 09 and AF). They are typically represented as a three sets of four hexadecimal digits or six sets of two hexadecimal digits separated with periods. Regardless of the grouping and separator values, look for 12 hex digits for a valid MAC address.

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What device sends signals from a computer onto a network? Router Transceiver Cable Gateway

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Transceiver Explanation A transceiver (short for transmitter/receiver) sends signals to and receives signals from the network. It translates the parallel data stream of the computer to the serial data stream of the network and vice versa. Most transceivers are now built into network interface cards (NICs).

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Which of the following is true about the MAC address? (Select two.) It is typically represented by octets of decimal numbers between 0255. It is a 32-bit address. It is a 64-bit address. It is a 48-bit address. It is typically represented by hexadecimal numbers.

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It is a 48-bit address. It is typically represented by hexadecimal numbers. Explanation The MAC address identifies the physical address of the network adapter. The MAC address is a 12-digit (48-bit) hexadecimal number (each number ranges from 09 or AF). The address is often written as 00B0D006BCAC or 00B0.D006.BCAC, although dashes, periods, and colons can be used to divide the MAC address parts. An IPv4 address is 32bits and uses octets of decimal numbers between 0255. An IPv6 address is a 64-bit address that uses 32 hexadecimal numbers.

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Which network component connects a device with the transmission media and allows it to send and receive messages? Client Network interface card Peripheral Protocol Server

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Network interface card Explanation The network interface card (NIC) allows a device to send and receive messages over the transmission media.

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Which of the following is a valid MAC address? 73-99-12-61-15 192.168.12.15 34-9A-86-1G-B3-24 C0-34-FF-15-01-8E 255.255.255.0 83-5A-5B-0B-31-55-F1

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C0-34-FF-15-01-8E Explanation A MAC or hardware address is a unique identifier hard coded on every network adapter card. A valid MAC address has a total of 12 hexadecimal numbers. Hexadecimal numbers contain the numbers 0 to 9 and the letters A to F. Valid values in a MAC address range anywhere from 00 to FF. Note that one of the answers would be a valid MAC address except it uses a G value, which is beyond the range of a hexadecimal number.

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At which OSI model layer does a media converter operate? Layer 1 Layer 2 Layer 3 Layer 4

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Layer 1 Explanation A media converter operates at the OSI model layer 1 (Physical layer). The media converter translates frames into bits and transmits them on the transmission medium. At layer 2, the MAC address is added to make the data into a frame. At layer 3, the IP address is added to the packet. A media converter does not alter or use the MAC address or the IP address.

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You have a server that has a 100BaseFX network interface card that you need to connect to a switch. The switch only has 100BaseTX switch ports. Which device should you use? Gateway Bridge Media converter Hub Repeater

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Media converter Explanation Use a media converter to convert from one media type to another media type within the same architecture. Use a bridge to connect two devices that use different network architectures, for example to connect a wired network to wireless clients. A hub or a repeater connect devices using the same media type.

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What type of module might a switch use to allow it to modify the media type supported by a switch port? (Select two.) MPLS GBIC OCx SFP

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GBIC & SFP Explanation Older network adapters used an external transceiver that matched the media type. While nearly all current network adapters come with a built in transceiver type, new devices, such as switches and routers, use transceiver modules that allow you to modify the media type of a port by changing the transceiver. Transceiver modules include the following: • A GBIC (gigabit interface converter) is a larger sized transceiver that fits in a port slot and is used for Gigabit media including copper and fiber optic. • An SFP (small formfactor pluggable) is similar to a GBIC but with a smaller size. An SFP is sometimes called a miniGBIC. • An XFP transceiver is similar in size to an SFP but is used for 10 Gigabit networking.

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Which of the following statements accurately describes how a modem works? (Select two.) It modulates digital data from the PC into analog data and transmits it on a telephone network. It communicates over a telephone network using digital signals. It transmits digital signals over ordinary telephone copper wiring at a rate up to 128 Kbps. It demodulates analog data from a telephone network into digital PC data. It demodulates analog PC data into digital data that can be transmitted through a telephone network. It modulates digital data from a telephone network into analog data that a PC can use.

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It modulates digital data from the PC into analog data and transmits it on a telephone network. It demodulates analog data from a telephone network into digital PC data. Explanation Modem is shorthand for modulator/demodulator. Its job is to convert (or modulate) digital data from a PC into analog telephone signals and transmit them through a telephone network. It also receives analog data from the telephone network and converts (or demodulates) it into digital PC data.

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Which three of the following devices operate at the Data Link layer of the OSI model? Routers Bridges Switches Repeaters Network interface cards (NICs) Hubs

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Bridges, Switches & NICs Explanation Network interface cards (NICs), bridges, and switches all operate at the OSI Data Link layer. They use the physical device address (MAC address) to identify packets. Hubs and repeaters operate at the Physical layer they simply repeat packets without regard to addresses. Routers function at the Network layer they examine the logical device and network address to perform routing tasks.

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Which of the following hardware devices regenerates a signal out all connected ports without examining the frame or packet contents? (Select two.) Bridge Hub Repeater Switch Gateway Router

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Hub & Repeater Explanation A hub and a repeater send received signals out all other ports. These devices do not examine the frame or the packet contents. A switch or a bridge use the MAC address in a frame for forwarding decisions. A router uses the IP address in a packet for forwarding decisions.

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Which of the following best describes how a switch functions? It connects multiple segments of different architectures. It translates frames, and forwards them to the appropriate segment. It connects multiple segments of different architectures. It translates frames, and broadcasts them to all of its ports. It connects multiple cable segments (or devices), and forwards frames to the appropriate segment. It connects multiple cable segments (or devices), and broadcasts frames to all of its ports.

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It connects multiple cable segments (or devices), and forwards frames to the appropriate segment. Explanation Switches have multiple ports and can connect multiple segments or devices. The switch forwards frames to the appropriate port. They function similarly to a hub, except instead of sending packets to all ports, switches send packets only to the destination computer's port.

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A switch is associated with which OSI model layer? Transport Network Data Link Physical

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Data Link Explanation Switches are associated with the Data Link layer of the OSI model. Switches examine the device address in the packet and forward messages directly to that device.

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How do switches and bridges learn where devices are located on a network? When a frame enters a port, the destination IP address is copied from the frame header. When a frame enters a port, the source IP address is copied from the frame header. When a frame enters a port, the source MAC address is copied from the frame header. When a frame enters a port, the destination MAC address is copied from frame header.

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When a frame enters a port, the source MAC address is copied from the frame header. Explanation Bridges and switches learn addresses by copying the MAC address of the source device and placing it into the MAC address table. The port number which the frame entered is also recorded in the table and associated with the source MAC address. The switch or the bridge cannot record the destination MAC address because it does not know the port that is used to reach the destination device. Bridges and switches operate at Layer 2 and do not use IP addresses (which exist at Layer 3).

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An access point that conforms to the IEEE 802.11b standard acts most closely to what other networking device? Router Gateway Hub Terminal Patch bay

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Hub Explanation An access point functions like a hub by connecting multiple wireless hosts to a wired Ethernet network.

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At which layer of the OSI model do hubs operate? Data Link Internet Physical Layer 3

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Physical Explanation Hubs operate at layer 1, or the Physical layer of the OSI model.

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Your company purchases a new bridge, which filters packets based on the MAC address of the destination computer. On which layer of the OSI model is this device functioning? Data Link Transport Presentation Session

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Data Link Explanation The bridge is operating at the Data Link layer.

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Which of the following devices operate at OSI model layer 2? (Select two.) Network interface card Firewall Switch Hub Repeater Router

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Switch & Network interface card Explanation A network interface card and a switch operate at layer 2 (Data Link) of the OSI model. Layer 2 includes protocols that define the MAC address. The MAC address is burned into the network interface card, and a switch uses the MAC address to make forwarding decisions. A hub or a repeater operate at layer 1? they regenerate a signal without looking at layer 2 or layer 3 information. A router operates at layer 3, using the IP address to make forwarding decisions. A firewall operates at layer 3 or higher, using packet or data contents for making filtering decisions.

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An 8-port switch receives a frame on port number 1. The frame is addressed to an unknown device. What will the switch do? Send the frame out the destination port. Drop the frame. Send the frame out ports 2-8. Send the frame out all 8 ports.

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Send the frame out ports 2-8. Explanation Because the switch does not know the port that is used to reach the destination device, it will send the frame out all ports except for the port on which the frame was received. After the switch learns the port that is used to reach the destination device, it will send the frame out only that port.

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Which of the following devices is used on a LAN and offers guaranteed bandwidth to each port? Router Bridge Switch

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Switch Explanation A switch offers guaranteed bandwidth to each port.

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Which of the following is the best device to deploy to protect your private network from a public untrusted network? Firewall Gateway Hub Router

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Firewall Explanation A firewall is the best device to deploy to protect your private network from a public untrusted network. Firewalls are used to control traffic entering and leaving your trusted network environment. Firewalls can manage traffic based on source or destination IP address, port number, service protocol, application or service type, user account, and even traffic content. Routers offer some packet based access control, but not as extensive as that of a full-fledged firewall. Hubs and gateways are not sufficient for managing the interface between a trusted and an untrusted network.

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You are the network administrator for a small organization. Recently, you contracted with an ISP to connect your organization's network to the Internet to provide users with Internet access. Since doing so, it has come to your attention that an intruder has invaded your network from the Internet on three separate occasions. What type of network hardware should you implement to prevent this from happening again? Proxy server Switch Hub Firewall CSU/DSU Router

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Firewall Explanation The role of a firewall is to provide a barrier between an organization's network and a public network, such as the Internet. Its job is to prevent unauthorized access into the organization's private network. To do this, the firewall examines incoming packets and determines whether they should be allowed to enter based on a set of rules defined by the network administrator.

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At what OSI layer does a router operate to forward network messages? Network Session Physical Data Link Transport

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Network Explanation A router uses the logical network address specified at the Network layer to forward messages to the appropriate LAN segment. A bridge, on the other hand, uses the MAC address and works at the Data Link layer.

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Which of the following hardware devices links multiple networks and directs traffic between networks? Repeater Router Bridge Hub

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Router Explanation A router is a device that links multiple networks and directs traffic between networks. Each network linked by routers has its own unique identifier called the "network number" or"network address."

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At which of the following OSI layers does a router operate? Layer 1 Layer 2 Layer 3 Layer 4

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Layer 3 Explanation A router operates at layer 3, or the Network layer.

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You are the administrator of your company's network. You want to prevent unauthorized access to your intranet from the Internet. Which of the following should you implement? Proxy server Packet Internet Groper ICS Firewall

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Firewall Explanation A firewall allows you to filter unwanted traffic from the Internet to your network. Packet Internet Groper is better known by its acronym, PING, a TCP/IP command. A proxy server caches web pages. ICS allows you to connect a small network to the Internet through a single connection.

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Which two of the following tasks do routers perform? Control access to the transmission media Identify devices through hardware addresses Maintain information about paths through an internetwork Multiplex signals onto the same transmission media Route data based on logical network addresses Route data based on hardware device addresses

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Maintain information about paths through an internetwork Route data based on logical network addresses Explanation Routers build and maintain tables of routes through an internetwork, and deliver data between networks based on logical network addresses.

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A network is connected following the IEEE 802.3 specifications. Which of the following best describes when a device can transmit messages? The device is notified of its turn to send messages. The device requests permission from a controlling device. The device with the token can use the transmission media. The device transmits whenever it is ready. The device listens to determine if the transmission media is free.

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The device listens to determine if the transmission media is free. Explanation The IEEE 802.3 committee describes the CSMA/CD media access method. Devices listen to the network to determine if the transmission media is free before transmitting.

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Which of the following connectors is used with Ethernet 10BaseT networks? RJ11 RJ45 15-pin D-shell BNC

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RJ45 Explanation RJ45 connectors are used with Ethernet 10-BaseT networks.

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The media access control method of all Ethernet networks is __________. CSMA/CD CSMA/CA Polling Token passing

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CSMA/CD Explanation Carrier sense multiple access with collision detection (CSMA/CD) is the media access control method of all Ethernet networks.

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Which of the following physical topologies are used with Ethernet networks? (Select two.) Mesh Star Bus Ring

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Bus & Star Explanation Ethernet networks use either a physical bus or physical star topology. Hubs can also be cascaded to form a tree topology.

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Which of the following use the CSMA/CD access method? Select all that apply. Token Ring 1000BaseT 10BaseT FDDI

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1000BaseT 10BaseT Explanation CSMA/CD stands for Carrier Sense Multiple Access / Collision Detection. It defines the steps network devices take when two devices attempt to use a data channel simultaneously. Ethernet networks use CSMA/CD, including 10BaseT, 10Base2 and 1000BaseT.

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You would like to implement 10 Gbps Ethernet over a distance of at least 10 kilometers. Which of the following would meet the requirement for this implementation? (Select three.) 10GBaseER standards 10GBaseLR standards Multimode fiber Single mode fiber 10GBaseSR standards

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Single mode fiber 10GBaseER standards 10GBaseLR standards Explanation For 10 Gbps Ethernet at distances of 10 kilometers or more, use singlemode fiber optic cable. 10GBaseLR (up to 10 km) and 10GBaseER (up to 40 km) both support 10 Gbps single mode fiber. Multimode fiber is cheaper but has a shorter maximum distance than single mode fiber. 10GBaseSR uses multimode fiber at distances up to 300 meters.

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With an Ethernet 10BaseT network, the maximum cable length between a computer and the hub is: 100 meters 100 feet 500 feet 185 meters

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100 meters Explanation With an Ethernet 10BaseT network, the maximum cable length between a computer and the hub is 100 meters.

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Which of the following Ethernet standards uses fiber optic cabling? (Select two.) 1000BaseCX 100BaseT4 100BaseFX 100BaseTX 1000BaseLX

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100BaseFX 1000BaseLX Explanation 100BaseFX and 1000BaseLX are Ethernet standards that use fiberoptic. Following the Ethernet naming conventions: • F designates fiberoptic cables. Ethernet standards with the F designation are 10BaseFL and 100BaseFX. • L designates "long" distances and requires fiberoptic to support the distance. Ethernet standards with the L designation are 10BaseFL, 1000BaseLX, and 10GBaseLR. • S designates "short" distances that use fiberoptic cables. Ethernet standards with the S designation are 1000BaseSX and 10GBaseSR. • T designates twisted pair cables. Ethernet standards with the T designation are 10BaseT, 100BaseTX, 100BaseT4, and 1000BaseT. • C designates copper cables. The 1000BaseCX standard is for fast Ethernet at short distances within wiring closets.

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You are planning a network for an educational campus. Due to the size of the buildings and the distance between them, you have elected to use 10BaseFL hubs, cabling, and network interface cards. What is the maximum length for the network cable between a workstation and a hub? 550 meters 1000 meters 220 meters 100 meters 412 meters 2000 meters

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2000 meters Explanation The maximum length for a 10BaseFL network segment is 2000 meters (2 km). Because a 10baseFL network uses a physical star topology, a segment is defined as one of the arms of the star, (between the hub and a host). That means the fiberoptic cable between the hub and a workstation can be up to 2000 meters long. 100BaseFX supports up to 412 meters. 1000BaseSX and 1000BaseLX support up to 550 meters. 100 meters is the maximum twisted pair cable length.

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Which of the following standards is used by SONET? 10GBaseER 1000BaseSX 1000BaseLX 1000BaseCX 10GBaseLW

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10GBaseLW Explanation 10GBase standards ending in W are used for SONET implementations. These include 10GBaseSW (short), 10GBaseLW (long), and 10GBaseEW (extended). 10GBaseER is for extended fiber optic but not used with SONET. 1000Base standards are not used for SONET. 1000BaseCX is a copper cable specification.

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What type of cabling is used with 100BaseTX Fast Ethernet networks? Type 1A STP or Category 5 UTP Type 5 STP or Category 1 UTP Category 3 UTP, Category 4 UTP, or Category 5 UTP None of the above

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Type 1A STP or Category 5 UTP Explanation Either Type 1A STP or category 5 UTP can be used with 100BaseTX Fast Ethernet networks.

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Your network follows the 100BaseFX specifications for Fast Ethernet, and uses halfduplex cable. What is the maximum cable segment length allowed? 100 meters 412 meters 550 meters 1,000 meters 2,000 meters

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412 meters Explanation For 100BaseFX, halfduplex, multimode cable has a maximum segment length of 412 meters. 1000BaseSX and 1000BaseLX support multimode cable up to 550 meters. 10BaseFL supports fiber optic cable between 1,000 and 2,000 meters.

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You have been tasked with designing a highspeed Ethernet network. Your client's building already has 150ohm shielded twisted pair (STP) wiring installed. Due to budget constraints, they have asked you to reuse the existing wiring instead of installing new fiberoptic cabling. Which Ethernet standard could you implement in this situation? 1000BaseZX 10BaseFL 1000BaseLX 1000BaseCX 1000BaseT 1000BaseSX

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1000BaseCX Explanation The 1000BaseCX standard specifies 150ohm STP cabling. The maximum cable length is 25 meters. The 10BaseFL, 1000BaseSX, 1000BaseLX, and 1000BaseZX standards employ fiberoptic cabling. 1000BaseT uses Category 5 UTP instead of STP cabling.

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What topology is used with 100BaseTX Fast Ethernet networks? (Select two.) Physical star/logical bus Physical star/logical ring Physical star/logical star Physical ring/logical star

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Physical star/logical bus Physical star/logical star Explanation 100BaseTX Fast Ethernet networks use a physical star/logical bus topology when a hub is used or a physical star/logical star when a switch is used.

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You are working on upgrading the network in an older building. Over the years, the building has had several types of networking cable installed. The network must support 1000 Mbps Ethernet. You would like to minimize the cost of the upgrade by replacing cables only if necessary. Which types of cable must be replaced to support the required network speed? (Select two.) Cat 3 Cat 4 Cat 5 Cat 5e Cat 6 Cat 6e

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Cat 3 & Cat 4 Explanation 1000 Mbps Ethernet (Gigabit Ethernet) requires at least Cat 5 cables. While Cat 5 supports 1000 Mbps, it can have poor performance during high-data transfers. Whenever possible, it is best to use a higher grade cable (Cat 5e or Cat 6) if you want 1000 Mbps data transmission. Cat 3 only supports 10 Mbps Ethernet. Cat 5e or Cat 6 is required for 10 Gbps Ethernet.

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Ethernet 100BaseFX networks use what type of cabling? Unshielded twisted pair Fiber optic Shielded twisted pair Coaxial

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Fiber optic Explanation Ethernet 100BaseFX networks use fiber optic cabling.

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Which Gigabit Ethernet standard can support long network segments up to a maximum of 5 km when used with fiberoptic cable? 1000BaseSX 1000BaseLX 1000BaseT 1000BaseCX

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1000BaseLX Explanation 1000BaseLX supports segment lengths of up to 5 km when used with fiber-optic cable. This maximum segment length is cut to 550 m when fiber-optic cable is used and it operates in half-duplex. 1000BaseSX supports segment lengths of only 550 meters. 1000BaseCX uses copper wire and supports segment lengths of only 25 meters. 1000BaseT uses twisted pair cables.

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Which Gigabit Ethernet standard uses fiberoptic cabling and supports network segments up to a maximum of 550 meters long? 1000BaseT 1000BaseZX 1000BaseCX 1000BaseSX

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1000BaseSX Explanation The 1000BaseSX standard uses fiberoptic cable with a maximum segment length of 550 meters. However, to implement segments this long, you must use 50 micron, 500MHz/km fiber optic cable. Other types of cable will shorten the maximum segment length. 1000BaseFX also supports lengths up to 550 meters. 1000BaseFX supports distances up to 10 kilometers. 1000BaseZX has a maximum segment length of up to 100 km. 1000BaseCX and 1000BaseT use copper cabling instead of fiberoptic.

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You want to implement an Ethernet network at very long distances using fiber optic cables. Which standard and cable type would you choose? (Select two.) 1000BaseLX Single mode fiber 1000BaseCX Mutimode fiber 1000BaseSX

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1000BaseLX Single mode fiber Explanation Of the standards listed in this question, 1000BaseLX provides the greatest cable length (think of the "L" in 1000BaseLX as "long"). When using long distances for fiber optic, use single mode fiber. Multimode fiber is cheaper but has a shorter maximum distance than single mode fiber. 1000BaseSX is for short fiber optic, and 1000BaseCX uses short copper within a wiring closet.

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You have been tasked with designing an Ethernet network. Your client needs to implement a very highspeed network backbone between campus buildings? some of which are around 300 m apart. Fiberoptic cabling has already been installed between buildings. Your client has asked that you use the existing cabling that operates in fullduplex. Which Ethernet standard meets these guidelines? (Choose two.) 1000BaseSX 1000BaseT 10GBaseSR 10BaseFL 1000BaseCX

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1000BaseSX 10GBaseSR Explanation 10GBaseSR and 1000BaseSX can operate within these parameters. Both will support segment lengths 300 meters long and operate using full-duplex. 10BaseFL isn't a good choice because its data transmission rate is relatively slow. 1000BaseCX and 1000BaseT both use copper wiring.

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Which of the following are requirements of the 1000BaseT Ethernet standards? (Select three.) SC or ST connectors RJ45 connectors Fiber optic cable CAT 5 cabling The cable length must be less than or equal to 100m The cable length must be less than or equal to 1000m

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RJ45 connectors CAT 5 cabling The cable length must be less than or equal to 100m Explanation Gigabit Ethernet (1000BaseT) has similar requirements to 100BaseT with connectors, cabling, and distances. The network cards are simply designed to transfer data ten times as fast.

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Your network follows the 100BaseTx specifications for Fast Ethernet. What is the maximum cable segment length allowed? 500 meters 1,000 meters 412 meters 2,000 meters 100 meters

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100 meters Explanation Fast Ethernet using twisted pair cables (either 100BaseT4 or 100BaseTx) has a maximum cable segment length of 100 meters. Tip: All Ethernet networks that use twisted pair cable (Ethernet, Fast Ethernet, Gigabit Ethernet) have a distance limitation of 100 meters.

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You have purchased a new router that you need to configure. You need to connect a workstation to the router's console port to complete the configuration tasks. Which type of cable would you most likely use? RG6 Straight-through Crossover Rollover

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Rollover Explanation Use a rollover cable to connect a workstation to the console port of a router or a switch. The rollover cable has an RJ45 connector on one end to connect to the console port, and a serial connector on the other end to connect to the serial port of the workstation. You then run a terminal emulation program on the workstation to connect to the console of the router or switch to perform configuration and management tasks. Use a straight-through or crossover Ethernet cable to connect devices using the Ethernet RJ45 ports. An RG6 cable is a coaxial cable.

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You have two switches that you need to connect using their uplink ports. The switches do not support auto-MDI. Which type of cable should you use? Straight-through Loopback Crossover Rollover

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Crossover Explanation Use a crossover cable to connect two switches through their uplink ports, or to connect the two switches through regular ports. Use a straight-through cable to connect the uplink port on one switch to a regular port on another switch. Use a rollover cable to connect a workstation to the console port of the switch. Use a loopback plug connected to a single port for troubleshooting.

question

You want to connect the LAN port on a router to the uplink port on a switch. The switch does not support auto-MDI. Which type of cable should you use? Crossover Rollover Straight-through Loopback

answer

Crossover Explanation Use a crossover cable to connect a workstation or a router to the uplink port on a switch. Use a straight-through cable to connect the router to a regular switch port. Use a rollover cable to connect a workstation to the console port of a router. Use a loopback plug to allow a device to communicate with itself through its own network adapter.

question

You need to transfer data from one laptop to another and would like to use an Ethernet cable. You do not have a hub or a switch. Which type of cable should you use? Loopback Crossover Straight-through Rollover

answer

Crossover Explanation Use a crossover cable to connect two devices together in a back-to-back configuration. Use a straight-through cable to connect a workstation to a hub or switch port. Use a rollover cable to connect a workstation to the console port of a router or a switch. Use a loopback plug to allow a device to communicate with itself through its own network adapter.

question

Which of the following standards is typically used in a rollover cable? RS-232 RG-58 RG-6 R-J11

answer

RS-232 Explanation A rollover cable has a serial connector on one end and an RJ-45 connector on the other end. RS-232 is the standard for serial communications. RJ-11 connectors are used for analog telephone lines. RG-6 and RG-58 are coaxial cable standards.

question

You need to connect a workstation to a switch using a regular port on the switch (not an uplink port). The switch does not support auto-MDI. Which type of cable should you use? Straight-through Crossover Loopback Rollover

answer

Straight-through Explanation Use a straight-through cable to connect a workstation or router to a regular switch port. Use a crossover cable to connect the workstation to the uplink port. Use a rollover cable to connect the workstation to the console port of the switch. Use a loopback plug to allow a workstation to communicate with itself through its own network adapter.

question

Which of the following connectors is typically used on one end of a rollover cable? ST BNC F-type Serial LC SC

answer

Serial Explanation A rollover cable has a serial connector on one end and an RJ45 connector on the other end. Alternatively, it might have an RJ45 connector on both ends, and a serial converter is used to convert from the RJ45 connector to a serial connector. BNC and F-type connectors are used with coaxial cables. ST, SC, and LC connectors are used with fiber optic cables.

question

You want to create a rollover cable that has an RJ45 connector on both ends. How should you connect the wires within the connectors? Connect pin 1 to pin 8, pin 2 to pin 7, pin 3 to pin 6, and pin 4 to pin 5. Use the T568A standard on one end and the T568B standard on the other end. Connect each pin on one end to the same pin on the other end (i.e. pin 1 with pin 1, pin 2 with pin 2, etc.). Connect pin 1 with pin 3 and pin 2 to pin 6.

answer

Connect pin 1 to pin 8, pin 2 to pin 7, pin 3 to pin 6, and pin 4 to pin 5. Explanation When terminated with an RJ45 connector on both ends, the wires within the connectors are rolled over to the opposite connector as follows: • Pin 1 is connected to pin 8 • Pin 2 is connected to pin 7 • Pin 3 is connected to pin 6 • Pin 4 is connected to pin 5 A crossover cable uses the T568A standard on one end and the T568B standard on the other end. The crossover cable connects pin 1 with pin 3 and pin 2 to pin 6. Connecting each pin to the same pin on the other end creates a straight-through cable.

question

Which three of the following IP addresses are Class C addresses? 222.55.0.0 240.0.0.0 189.189.5.2 192.15.5.55 125.166.11.0 223.16.5.0

answer

222.55.0.0 192.15.5.55 223.16.5.0 Explanation The following are Class C addresses: 192.15.5.55, 222.55.0.0, and 223.16.5.0. The first octet of Class C addresses is in the range of 192 to 223.

question

In an IP addressing scheme using default subnet masks, which of the following IP addresses can you assign to a host? 127.0.0.1 199.45.207.0 127.35.88.92 132.70.254.15

answer

132.70.254.15 Explanation Addresses starting with 127 are reserved and cannot be assigned to hosts. The address 199.45.207.0 is a network ID, and is therefore not assigned to a host.

question

You manage a subnet that uses the following subnet address: 198.162.1.0/23. Which of the following best describes how addressing is configured for the subnet? Supernetting Private Subnetting Classful

answer

Supernetting Explanation The subnet address 198.162.1.0/23 is an example of a supernetted address. With supernetting, multiple smaller subnets are combined into a single larger subnet. Supernetting is performed by taking the default subnet mask and making it smaller (using less bits). For this address, the default subnet mask uses 24 bits (255.255.255.0). With supernetting, the mask is altered to use only 23 bits (255.255.254.0) to combine multiple subnets together. Subnetting is the process of dividing a larger network into smaller networks. With the subnet address in this example, a subnetted address would use a larger subnet mask (using more bits). A subnetted address might use 25 bits (255.255.255.128) or more to subdivide the network into multiple smaller subnets. Sometimes the term subnetting can be used to refer to both subnetting and supernetting, but in this example, supernetting better describes what is being done. Classful addressing uses the default subnet mask based on the address class. If classful addressing were used, the subnet would use a 24 bit mask. Private addresses are within the following ranges: • 10.0.0.1 to 10.255.255.254 • 172.16.0.1 to 172.31.255.254 • 192.168.0.1 to 192.168.255.254

question

Consider the following IP addresses. 1. 124.77.8.5 2. 131.11.0.9 3. 190.66.250.10 4. 196.5.89.44 Which list represents the IP address class of each listed IP address? Class A, Class B, Class B, Class C Class B, Class B, Class C, Class D Class B, Class B, Class C, Class C Class A, Class B, Class C, Class C Class A, Class B, Class C, Class C Class B, Class C, Class C, Class D

answer

Class A, Class B, Class B, Class C Explanation The IP addresses listed are of the following classes: Class A, Class B, Class B, Class C. You can identify the IP address class by memorizing the range of values for the first octet. • 0-126 = Class A • 128-191 = Class B • 192-223 = Class C • 223-239 = Class D • 240-255 = Class E

question

Which of the following is the last IP address that can be assigned to hosts on the 166.70.0.0 network using the default subnet mask? 166.70.0.255 166.70.0.254 166.71.0.0 166.70.255.255 166.70.255.254

answer

166.70.255.254 Explanation The last address you can assign to hosts on the 166.70.0.0 network is 166.70.255.254. The network address is a Class B address and uses a default subnet mask of 255.255.0.0. The last two octets are used for host addresses. 166.70.0.0 cannot be used as a host address because it is the network address. 166.70.255.255 cannot be used as a host address because it is the broadcast address.

question

A host on the network has an IP address of 129.11.99.78 using the default subnet mask. How would you identify the address and mask using CIDR notation? 129.11.99.78/24 129.11.99.78/16 129.11.99.78/8 129.11.99.78:8 129.11.99.78:24 129.11.99.78:16

answer

129.11.99.78/16 Explanation Use 129.11.99.78/16 for the address and the mask. With CIDR notation, follow the IP address with a slash (/) and the number of bits in the mask. The default subnet mask for this address is 255.255.0.0 which uses 16 bits in the mask.A mask value of 255.0.0.0 uses 8 bits, and a mask value of 255.255.255.0 uses 24 bits.

question

Your network has been assigned the Class C network address of 200.78.151.0. Which three of the following addresses can be assigned to hosts on your network? 200.78.151.0 200.78.151.111 200.78.151.257 200.78.151.12 200.78.152.14 200.78.151.252 200.78.151.255

answer

200.78.151.111 200.78.151.12 200.78.151.252 Explanation All hosts on this network must share the first three octets of the IP address (200.78.151). Youcannot assign 200.78.151.0 to a host because this address indicates the address of the network. You cannot assign 200.78.151.255 because this address is reserved for the broadcast address.

question

Which of the following best describes the purpose of using subnets? Subnets let you connect a private network to the Internet. Subnets place each device within its own collision domain. Subnets combine multiple IP network addresses into one network address. Subnets divide an IP network address into multiple network addresses.

answer

Subnets divide an IP network address into multiple network addresses. Explanation Subnets divide an IP network address into multiple network addresses. This allows you to have several smaller networks while using only one network address.

question

Which three of the following are not valid IP addresses? 45.22.156.256 116.0.0.116 1.55.254.3 132.64.32.8 145.8.260.7 257.0.122.55 122.0.0.0

answer

145.8.260.7 257.0.122.55 Explanation IP addresses have a value between 0 and 255 within each octet. In this list, 45.22.156.256, 145.8.260.7, and 257.0.122.55 are not valid IP addresses.

question

What is the decimal format of the following binary IP address? 11001110.00111010.10101010.01000011 238.90.202.99 206.58.170.67 190.42.154.51 205.57.169.66

answer

206.58.170.67 Explanation 206.58.170.67 is the decimal form of the IP address. To convert binary to decimal, remember the following numbers: 128, 64, 32, 16, 8, 4, 2, 1 Each number represents the decimal value for a binary 1 in the corresponding position. For example, 10000000 is equal to 128, and 00010000 is equal to 16. To find the decimal form of a binary number, add up each decimal equivalent for each 1 bit in the address. For example, the number 11001110 would be: 128 + 64 + 8 + 4 + 2 = 206.

question

Which of the following is the last IP address that can be assigned to hosts on the 211.70.0.0 network using the default subnet mask? 211.70.0.255 211.70.255.255 211.70.0.254 211.71.0.0 211.70.255.254

answer

211.70.0.254 Explanation The last address you can assign to hosts on the 211.70.0.0 network is 211.70.0.254. The network address is a Class C address and uses a default subnet mask of 255.255.255.0. The last octet is used for host addresses. 211.70.0.0 cannot be used as a host address because it isthe network address. 211.70.0.255 cannot be used as a host address because it is the broadcast address.

question

What is the default subnet mask for the IP address 203.111.3.3? 255.0.0.0 255.255.255.255 255.255.0.0 255.255.255.0

answer

255.255.255.0 Explanation IP addresses are divided into classes. The most common of these are classes A, B, and C. Each address class has a different default subnet mask. To identify the class of an IP address, look at its first octet. • Class A networks use a default subnet mask of 255.0.0.0 and have 0-126 as their first octet. • Class B networks use a default subnet mask of 255.255.0.0 and have 128-191 as their first octet. • Class C networks use a default subnet mask of 255.255.255.0 and have 192-223 as their first octet. In this question, the IP address falls in the Class C range and therefore has a default subnet mask of 255.255.255.0.

question

What is the binary format for the following decimal IP address? 131.9.202.111 10000001.00001010.11000011.01010111 10000110.00001011.11000101.10101110 10000111.00001101.11001110.01011101 10000011.00001001.11001010.01101111

answer

10000011.00001001.11001010.01101111 Explanation 10000011.00001001.11001010.01101111 is the binary format of the address. To convert binary to decimal, remember the following numbers: 128, 64, 32, 16, 8, 4, 2, 1 Each number represents the decimal value for a binary 1 in the corresponding position. For example, 10000000 is equal to 128, and 00010000 is equal to 16.To find the binary form of a decimal number, try to subtract each decimal value from the value in the octet. For example, for 131, you can subtract 128 leaving a remainder of 3. You can then subtract 2 and then 1. For each number you can subtract, write a 1 in the binary position of the address.

question

A host has the address 100.55.177.99/16. Which of the following is the broadcast address for the subnet? 255.255.255.0 100.255.255.255 100.55.255.255 100.55.177.255 255.255.0.0

answer

100.55.255.255 Explanation The broadcast address for the subnet is the last address on the subnet. In this example, the address uses 16 bits in the subnet mask (255.255.0.0), meaning that the first two octets indicate the subnet address (100.55.0.0), and the last two octets are used for host addresses. The last possible address on this subnet is 100.55.255.255.

question

Which of the following IP addresses have a default subnet mask of 255.255.0.0? (Select all that apply.) 129.0.0.1 123.254.19.6 1.6.45.254 168.16.5.1 191.168.2.15 228.62.18.6

answer

129.0.0.1 168.16.5.1 191.168.2.15 Explanation IP addresses are divided into classes. The most common of these are classes A, B, and C. Each address class has a different default subnet mask. To identify the class of an IP address, look at its first octet. • Class A networks use a default subnet mask of 255.0.0.0 and have 0-126 as their first octet. • Class B networks use a default subnet mask of 255.255.0.0 and have 128-191 as their first octet. • Class C networks use a default subnet mask of 255.255.255.0 and have 192-223 as their first octet. In this question, the IP addresses that fall in the Class B IP address range are 191.168.2.15, 129.0.0.1, and 168.16.5.1.

question

Which of the following is not a reason to use subnets on a network? Combine different media type on to the same subnet. Extend the network. Improve security. Isolate network problems.

answer

Combine different media type on to the same subnet. Explanation Subnets cannot be used to combine networks of different media type on to the same subnet. Each network with a distinct media type has its own subnet. Subnets can be used to combine networks with different media types within the same internetwork.

question

Which of the following is the first IP address that can be assigned to hosts on the 166.70.0.0 network using the default subnet mask? 166.71.0.0 166.70.1.0 166.70.0.0 166.70.1.1 166.70.0.1

answer

166.70.0.1 Explanation The first address you can assign to hosts on the 166.70.0.0 network is 166.70.0.1. The network address is a Class B address and uses a default subnet mask of 255.255.0.0. The last two octets are used for host addresses. The host address range is 166.70.0.1 to 166.70.255.254. 166.70.0.0 cannot be used as a host address because it is the network address. 166.70.255.255 cannot be used as a host address because it is the broadcast address.

question

You have been told to assign the IP address 21.155.67.188 to a host on the network using the default subnet mask. Which mask should you use? 21.155.0.0 255.255.0.0 21.155.67.0 255.0.0.0 255.255.255.0 21.0.0.0

answer

255.0.0.0 Explanation The default subnet mask for this address is 255.0.0.0. The address is a class A address, which begins with a number between 1 and 126 in the first octet. 21.0.0.0 is the subnet address. 255.255.0.0 is the default subnet mask for a class B address,and 255.255.255.0 is the default subnet mask for a class C address.

question

Which of the following is a valid IP (version 4) address? (Select two.) 172.16.1.26 192.168.1.512 1.254.1.1024 254.7.1.417 10.384.0.3 256.0.0.1 2.2.2.2

answer

172.16.1.26 2.2.2.2 Explanation A valid IPv4 address consists of 4 8bit (1 byte) numbers separated by periods. For example, 10.0.0.65. Because they are 8 bits long, these numbers are frequently called octets. Even though we typically express these numbers using decimal notation, it's important to remember that these numbers are binary numbers. The lowest value one of these numbers can have is 00000000. The decimal equivalent for this number is simply 0. The highest value one these numbers can take is 11111111. The decimal equivalent of this number is 255. Therefore, in decimal notation, each octet must contain a number between 0 and 255inclusively.

question

Which three of the following IP addresses are Class B addresses? 132.12.0.0 224.15.55.2 64.2.2.64 129.0.0.0 115.33.0.0 195.155.0.0 190.65.2.0

answer

132.12.0.0 129.0.0.0 190.65.2.0 Explanation The following are Class B addresses: 129.0.0.0, 132.12.0.0, and 190.65.2.0. The first octet of Class B addresses is in the range of 128 to 191.

question

Your network has been assigned the Class B address of 130.15.0.0. Which of the following is not an address you can assign to a node on your network? 130.15.60.0 130.16.61.3 130.15.60.220 130.15.0.1

answer

130.16.61.3 Explanation If you plan to use the Class B address for all nodes on the network, the nodes must all have the same network address. In this case, all IP addresses must begin with 130.15.

question

You are configuring the IP address for a host and have been asked to use the address 192.160.99.110/16. What subnet mask value would you use? 255.0.0.0 255.255.0.0 255.255.252.0 255.255.255.0

answer

255.255.0.0 Explanation With CIDR notation, the number of bits in the subnet mask is indicated by the /16 following the IP address. A mask that uses 16 bits is written 255.255.0.0 in decimal format. Each octet in the mask uses 8 bits, so a mask with 16 bits uses two full octets. Use /8 for the mask 255.0.0.0 and /24 for the mask 255.255.255.0. In this example, a /24 mask would be the default subnet mask, but the address is using a nondefault mask of 255.255.0.0.

question

Your network has been assigned the Class B network address of 179.113.0.0. Which three of the following addresses can be assigned to hosts on your network? 179.113.89.0 179.113.0.0 180.113.0.67 179.114.88.0 179.113.0.118 179.112.95.64 179.113.65.12

answer

179.113.89.0 179.113.0.118 179.113.65.12 Explanation All hosts on this network must share the first two octets of the IP address (179.113). You cannot assign 179.113.0.0 to a host because this address indicates the address of the network.

question

Which three of the following IP addresses belong to the Class A network 114.0.0.0? (Assume the network is indicated by the default portion of the IP address.) 114.58.12.0 114.122.66.12 114.0.0.15 115.77.89.4 115.88.0.55 115.0.0.66

answer

114.58.12.0 114.122.66.12 114.0.0.15 Explanation With a Class A network, the first octet indicates the network address. All hosts on the network must have the same value in the first octet (114).

question

Which of the following IP address ranges is reserved for Automatic Private IP Addressing? 192.168.0.1 192.168.254.255 169.254.0.1 169.254.255.254 169.192.0.0 169.192.254.255 192.168.0.0 192.168.255.254 169.168.0.1 169.168.255.255

answer

169.254.0.1 169.254.255.254 Explanation The Internet Assigned Numbers Authority (IANA) has reserved 169.254.0.1 through 169.254.255.254 for Automatic Private IP Addressing (APIPA). APIPA also sets the subnet mask on the network to 255.255.0.0.

question

What is the network address and subnet mask used by APIPA? (Select two.) 255.0.0.0 255.255.255.0 169.0.250.0 255.255.0.0 169.254.0.0 169.255.0.0

answer

255.255.0.0 169.254.0.0 Explanation Automatic Private IP Addressing (APIPA) uses a network address of 169.254.0.0 with the default Class B subnet mask of 255.255.0.0. Host addresses will be within the range of169.254.0.1 and 169.254.255.254.

question

You have a TCP/IP network with 50 hosts. There have been inconsistent communication problems between hosts. You run a protocol analyzer and discover that two hosts have the same IP address assigned. Which protocol can you implement on your network to help prevent problems such as this? IP TCP ICMP DHCP SNMP IGMP

answer

DHCP Explanation You can use the Dynamic Host Configuration Protocol (DHCP) to set up a DHCP server that will assign IP addresses automatically to network hosts. DHCP servers will not assign the same IP address to two different hosts.

question

You have a network with 50 workstations. You want to automatically configure workstations with the IP address, subnet mask, and default gateway values. Which device should you use? DNS server Gateway Router DHCP server

answer

DHCP server Explanation Use a DHCP server to deliver configuration information to hosts automatically. Using DHCP is easier than configuring each host manually. Use a gateway to provide access to a different network, or to a network using a different protocol. Use a router to connect multiple subnets. Use a DNS server to provide name resolution, for example to get the IP address associated with a logical host name.

question

Which of the following strategies are used to prevent duplicate IP addresses being used on a network? (Select two.) Install the DHCP client on all workstations Set the Windows networkmonitoring utility to identify potential IP conflicts Configure a HOSTS file for local IP resolution Use Automatic Private IP Addressing Install a DHCP server on the network Configure client systems to use static IP assignment

answer

Use Automatic Private IP Addressing Install a DHCP server on the network Explanation To avoid duplicate IP addresses being used by network systems, automatic IP assignment is used. Both the DHCP service and APIPA can automatically assign addresses to client systems. Clients configured to use static IP addressing may inadvertently have duplicate IP addresses assigned to them. In such a case, one of the systems will not be able to log on to the network.

question

Which two of the following statements about the Dynamic Host Configuration Protocol (DHCP) are true? It can deliver other configuration information in addition to IP addresses. It cannot be configured to assign the same IP address to the same host each time it boots. A DHCP server assigns addresses to requesting hosts. It is used only to deliver IP addresses to hosts.

answer

A DHCP server assigns addresses to requesting hosts. It can deliver other configuration information in addition to IP addresses. Explanation DHCP servers deliver IP addresses as well as other host configuration information to network hosts. DHCP can be configured to assign any available address to a host, or it can assign a specific address to a specific host.

question

You want to implement a protocol on your network that allows computers to find the IP address of a host from a logical name. Which protocol should you implement? Telnet ARP DHCP DNS

answer

DNS Explanation DNS is a system that is distributed throughout the internetwork to provide address/name resolution. For example, the name www.mydomain.com would be identified with a specific IP address. ARP is a protocol for finding the IP address from a known MAC address. DHCP is a protocol used to assign IP addresses to hosts. Telnet is a remote management utility.

question

You need to enable hosts on your network to find the IP address of logical names such as srv1.myserver.com. Which device would you use? IPS DNS server Bandwidth shaper IDS Load balancer

answer

DNS server Explanation Use a DNS server to provide hostname-to-IP address resolution. A bandwidth shaper modifies the flow of traffic to keep traffic within predefined limits. A load balancer accepts incoming client requests, and distributes those requests to multiple other servers. An IDS detects security threats, while an IPS can both detect and respond to security threats.

question

A router is connected to network 192.168.1.0/24 and network 192.168.2.0/24. The router is configured to use RIP and has learned of networks 192.168.3.0/24 and 192.168.4.0/24. The next hop router for network 192.168.3.0 has changed. You need to make the change with the least amount of effort possible. What should you do? Manually reconfigure the default route to point to the new next hop router. Stop and restart the RIP protocol on the router. Wait for convergence to take place. Force RIP to perform an immediate update.

answer

Wait for convergence to take place. Explanation When using a routing protocol, changes in routing information take some time to be propagated to all routers on the network. The term convergence is used to describe the condition when all routers have the same (or correct) routing information. Static routes in the routing table must be updated manually. Restarting RIP might actually increase the time required for changes to be learned. Forcing an update (if the router supports it) is not a requirement as the periodic sharing of routes will eventually update the routing table entry.

question

Which of the following statements about RIP is true? RIP uses hop counts as the cost metric. RIP is the routing protocol used on the Internet. RIP is suitable for large networks. RIP is a link state routing protocol.

answer

RIP uses hop counts as the cost metric. Explanation RIP is a distance vector routing protocol. As such, it is susceptible to the count-to-infinity problem. RIP uses the hop count as the cost metric. Because it has a limitation of 15 hops in one route, it is not suited for large networks.

question

Which of the following routing protocols is classified as a balanced hybrid routing protocol? EIGRP OSPF ISIS RIP

answer

EIGRP Explanation EIGRP is a hybrid routing protocol developed by Cisco for routing within an AS. RIP is a distance vector protocol, while OSPF and ISIS are link state protocols.

question

You have a router configured to share routing information using RIP. In addition, you have a single static route that identifies a default route for all other networks. The next hop router for the default route has changed. You need to make the change with the least amount of effort possible. What should you do? Manually reconfigure the default route to point to the new next hop router. Stop and restart the RIP protocol on the router. Force RIP to perform an immediate update. Wait for network convergence to take place.

answer

Manually reconfigure the default route to point to the new next hop router. Explanation With a static route, when changes to the network occur, routing table entries must be modified, added, or removed manually. In this example, the default route was configured manually, so must be manually updated. When using a routing protocol, routing changes are made automatically by routers sharing routing information. To make a change for a dynamic route, simply wait for convergence to occur (the term convergence describes the condition when all routers have the same routing information).

question

Which of the following is a characteristic of static routing when compared to dynamic routing? All routes must be manually updated on the router. Routers use the hop count to identify the distance to a destination network. Routers can only use static routing when not connected to the Internet. Routers send packets for destination networks to the next hop router.

answer

All routes must be manually updated on the router. Explanation Static routing requires that entries in the routing table are configured manually. Network entries remain in the routing table until manually removed. When changes to the network occur, static entries must be added or removed. The next hop router is used with most routes to identify the next router in the path to the destination, regardless of whether the route is a static or dynamically-learned route. The hop count can be used by static or dynamic routes, depending on the routing protocol used. Static routing can be used for private and public networks, whether connected to the Internet or not.

question

You manage a server that uses an IP address of 192.168.255.188 with a mask of 255.255.0.0. Which of the following describes the address type? Classless Classful Multicast Public Broadcast

answer

Classless Explanation Because the IP address is not using the default subnet mask, it is using classless addressing. Classless addressing modifies the length of the subnet mask, using a custom mask value instead of the default subnet mask. Classful addressing uses the default subnet mask. Devices that only support classful addressing assume the subnet mask based on the IP address class. A broadcast address is an address that is sent to all hosts. Broadcast addresses are the last possible address on a subnet. A multicast address is an address that identifies a group of computers. Members of the group share the same multicast address. Multicast addresses are in the range of 224.0.0.0 to 239.255.255.255. A public address is an address that is registered for use on the Internet.

question

What are the main differences between the OSPF and ISIS routing protocols? OSPF is a link state protocol, while ISIS is not. OSPF is a classful protocol, while ISIS is a classless protocol. OSPF requires an area 0, while ISIS does not. OSPF is an IGP routing protocol, while ISIS is a BGP routing protocol.

answer

OSPF requires an area 0, while ISIS does not. Explanation Like OSPF, ISIS uses areas when designing the network. However, ISIS does not require an area 0 like OSPF does. Because ISIS was originally designed for non-IP protocols, it can more easily support IPv6 routing. Both OSPF and ISIS have the following characteristics: • Both are link state protocols. • Both are classless protocols, supporting CIDR and VLSM. • Both are Interior Gateway Protocols (IGPs) that are used within an AS.

question

Which of the following terms are often synonymous with or made possible with CIDR? (Select two.) NAT Classless VLSM OSPF Classful

answer

Classless VLSM Explanation Classless InterDomain Routing (CIDR) allows for non-default subnet masks (variable length subnet mask or VLSM). Routers use the following information to identify networks: • The beginning network address in the range • The number of bits used in the subnet mask For example, the subnet 199.70.0.0 with a mask of 255.255.0.0 is represented as 199.70.0.0/16 (with 16 being the number of 1 bits in the subnet mask). Classful addresses rely on the IP address class to identify the subnet mask. Network Address Translation (NAT) allows you to connect a private network to the Internet without obtaining registered addresses for every host. Private addresses are translated to the public address of the NAT router. OSPF is a routing protocol that supports CIDR features.

question

You have a network configured to use the OSPF routing protocol. Which of the following describes the state when all OSPF routers have learned about all other routes in the network? Link state Convergence Classful VLSM Distance vector

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Convergence Explanation The term convergence is used to describe the condition when all routers have the same (or correct) routing information. Convergence requires some time, but once reached means that any router has learned about all other networks that are being advertised (or shared) on the network. Link state and distance vector describe general methods that routers use to share routes with other routers. Classful describes a routing protocol that assumes the subnet mask based on the address class of the network. Variable

question

Which of the following best describes OSPF? OSPF is a classful link-state routing protocol. OSPF is a classless distance vector routing protocol. OSPF is a classless link-state routing protocol. OSPF is a classful distance vector routing protocol.

answer

OSPF is a classless link-state routing protocol. Explanation OSPF is a classless link-state routing protocol. RIP version 1 and IGRP are both classful distance vector routing protocols. EIGRP is a hybrid protocol that supports classless addressing.

question

Which of the following protocols has a limit of 15 hops between any two networks? BGP EIGRP OSPF RIP ISIS

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RIP Explanation RIP networks are limited in size to a maximum of 15 hops between any two networks. A network with a hop count of 16 indicates an unreachable network. The other routing protocols do not use the hop count as the metric. EIGRP uses bandwidth and delay for the metric. OSPF and ISIS use a relative link cost. BGP uses paths, rules, and polocies for the metric.

question

What information does the next hop entry in a routing table identify? The first router in the path to the destination network. The number of routers that the packet must go through to reach the destination network. The last router in the path to the destination network. A backup router that is used for forwarding packets addressed to unknown networks.

answer

The first router in the path to the destination network. Explanation The next hop router is the first (or next) router in the path to the destination network. Each router looks at the destination network in the packet, then consults the routing table to identify the next hop router to the destination network. The hop count identifies the number of routers in the path to the destination network. A default gateway router is a router that is used for packets used to external networks. Most routers do not have a default gateway setting, but instead use a default route setting which identifies a next hop router for all unknown networks.

question

Which of the following routing protocols divides the network into areas, with all networks required to have an area 0 (area 0 identifying the backbone area)? RIP EIGRP ISIS OSPF

answer

OSPF Explanation OSPF divides a large network into areas. Each autonomous system requires an area 0 that identifies the network backbone. All areas are connected to area 0, either directly or indirectly through another area. Routes between areas must pass through area 0. ISIS uses areas but does not have an area 0 requirement. Neither RIP nor EIGRP use areas.

question

Under which of the following circumstances might you implement BGP on your company network and share routes with Internet routers? If the network is connected to the Internet using multiple ISPs. If the network has over 15 areas and uses IPv6. If the network is connected to the Internet using public addressing. If the network has over 15 hops.

answer

If the network is connected to the Internet using multiple ISPs. Explanation Very large networks can use BGP internally, but typically only share routes on the Internet if the AS has two (or more) connections to the Internet through different ISPs. If your network has over 15 hops, use a routing protocol other than RIP. Use OSPF or ISIS to divide your network into areas. Private networks that use public IP addresses do not need to share routes with Internet routers? it is typically the responsibility of the ISP to configure routes into the private network, even when public addressing is being used. A single route out of the private network is all that is required if the network has a single connection to the Internet.

question

A router is connected to network 192.168.1.0/24 and network 192.168.2.0/24. The router is configured to use RIP and has learned of networks 192.168.3.0/24 and 192.168.4.0/24. There is no default route configured on the router. The router receives a packet addressed to network 10.1.0.0/16. What will the router do with the packet? Drop the packet. Send the packet to both networks 192.168.3.0 and 192.168.4.0 to the next hop router. Hold the packet in cache until a matching route is learned or configured. Send the packet out both of its directly connected networks as a broadcast frame.

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Drop the packet. Explanation If a packet does not match any route in a routing table, the router will simply drop the packet. In this example, the router does not know about the destination network, and also is not configured with a default route. With a default route, the router will forward the packet to the next hop router specified by the default route.

question

A router is connected to network 192.168.1.0/24 and network 192.168.2.0/24. The router is configured to use RIP and has learned of networks 192.168.3.0/24 and 192.168.4.0/24. The router is also configured with a static route of 0.0.0.0 with a mask of 0.0.0.0. The router receives a packet addressed to network 10.1.0.0/16. What will the router do with the packet? Send the packet out both of its directly connected networks to the next hop router. Send the packet out both of its directly connected networks as a broadcast frame. Forward the packet to the next hop router specified by the route to network 0.0.0.0. Drop the packet.

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Forward the packet to the next hop router specified by the route to network 0.0.0.0. Explanation A route of 0.0.0.0 with a mask of 0.0.0.0 identifies a default route. The default route is used when no other route is a better match. Packets that match no other networks are sent to the next hop router specified by default route.

question

What is the main difference between RIP and RIPv2? RIP has a limit of 15 hops, while RIPv2 increases the hop count limit. RIP is a distance vector protocol, while RIPv2 is a link state protocol. RIP is a classful protocol, while RIPv2 is a classless protocol. RIP use the hop count for the metric, while RIPv2 uses a relative link cost.

answer

RIP is a classful protocol, while RIPv2 is a classless protocol. Explanation RIP v1 is a classful protocol, meaning that the subnet mask is not included in routing updates. With RIP, only the default subnet mask is used to identify networks. RIP v2 is a classless protocol, meaning that the subnet mask is included in routing updates. RIPv2 supports variable length subnet masks (VLSM). Both RIP and RIPv1 are distance vector protocols and use the hop count for the metric. RIP and RIPv2 have a limit of 15 hops between any two networks.

question

Which of the following routing protocols is used by routers on the Internet for learning and sharing routes? EIGRP BGP RIP ISIS OSPF

answer

BGP Explanation BGP is the protocol used on the Internet: ISPs use BGP to identify routes between ASs. Very large networks can use BGP internally, but typically only share routes on the Internet if the AS has two (or more) connections to the Internet through different ISPs. RIP is used on small private networks, while OSPF and EIGRP are used on larger private networks. ISIS is used on very large private networks and within the Internet Service Provider (ISP) network.

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Which of the following routing protocols are classified as link state routing protocols? (Select two.) EIGRP OSPF RIP ISIS RIPv2

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OSPF & IS-IS Explanation Both OSPF and ISIS are link state protocols. Using the link state method, routers share only their directly connected routes using special packets called link-state advertisements (LSAs) and link-state packets (LSPs). These route advertisements are flooded (forwarded) throughout the network. Routers use this information to build a topology database of the network. RIP and RIPv2 are classified as distance vector protocols. Using the distance vector method, routers share their entire routing table with their immediate neighbors. Routes learned from neighboring routers are added to the routing table, then shared with that router's neighbors. EIGRP is a balanced hybrid protocol. A hybrid method combines characteristics of both the distance vector and link state methods. It shares its full routing table at startup, followed by partial updates when changes occur.

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You have a private network connected to the Internet. Your routers will not share routing information about your private network with Internet routers. Which of the following best describes the type of routing protocol you would use? Static Link state IGP Dynamic Distance vector BGP

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IGP Explanation You would use an Interior Gateway Protocol (IGP) on routers within your network. Routing protocols can be classified based on whether they are routing traffic within or between autonomous systems: An Interior Gateway Protocol (IGP) routes traffic within an AS? an Exterior Gateway Protocol (EGP) routes traffic between ASs. Link state and distance vector describe how routing protocols share routing information. The network size might determine which protocol is best for your network. Static routing uses manually defined routes in the routing table, while dynamic routing uses a protocol so routers learn and share routes with other routers. You can use either static or dynamic routing (or both) on a private network.

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Which of the following is not one of the ranges of IP addresses defined in RFC 1918 that are commonly used behind a NAT server? 192.168.0.1 192.168.255.254 172.16.0.1 172.31.255.254 10.0.0.1 10.255.255.254 169.254.0.1 169.254.255.254

answer

169.254.0.1 169.254.255.254 Explanation 169.254.0.1 169.254.255.254 is the range of IP addresses assigned to Windows DHCP clients if a DHCP server does not assign the client an IP address. This range is known as the Automatic Private IP Addressing (APIPA) range. The other three ranges listed in this question are defined as the private IP addresses from RFC 1918 which are commonly used behind a NAT server.

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Which organization is responsible for allocating public IP addresses? IANA CompTIA IEEE IETF

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IANA Explanation The Internet Assigned Numbers Authority (IANA) is responsible for allocating IP addresses used on the Internet. When you want to obtain a public IP address, you would typically get the address from your ISP, which has received it from a Regional Internet Registry (RIR), which has been assigned a block of addresses from IANA. IANA is operated by the Internet Corporation for Assigned Names and Numbers (ICANN), so you might also see that ICANN is responsible for assigning public IP addresses. The IETF is an organization that is responsible for settings standards used on the Internet. For example, the IETF has defined the standards for NAT as well as other protocols. The IEEE is an organization that sets networking standards such as for Ethernet or wireless networking. CompTIA is a professional organization that represents computing technology companies and individuals.

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You have a small network at home that is connected to the Internet. On your home network you have a server with the IP address of 192.168.55.199/16. All computers on your home network can connect to the Internet. From your work office, you try to access your home computer using its IP address, but are unable to communicate with the server. You are able to connect to other hosts on the Internet. Why can't you access the server? Private addresses are not accessible through the Internet. The server has been assigned a multicast address. The server must have an entry on a DNS server that exists on the Internet. The server isn't using the default subnet mask.

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Private addresses are not accessible through the Internet. Explanation The server has been assigned a private IP address. Private addresses are not accessible from the Internet. Instead, a NAT router translates the private address into a public address, and the public address is used to gain access to the private host.

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Your computer has an IP address of 161.13.5.15. Your computer is on a: Public network Class C network Private network Multicast network

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Public network Explanation Most IP addresses are public IP addresses. However certain ranges have been reserved for private networks. These are: • 10.0.0.0 10.255.255.255 • 172.16.0.0 172.31.255.255 • 192.168.0.0 192.168.255.255 Because your computer's IP address does not fall into these ranges, it is a public IP address.

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Which of the following associates a port number with a host on a private network? NAT CIDR PAT VLSM

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PAT Explanation Port address translation (PAT) associates a port number with the translated address. Use PAT to allow multiple private hosts to share a single public address. Each private host is associated with a unique port number.Technically speaking, NAT translates one address to another. With only NAT, you would have to have a public address for each private host. NAT would associate a single public address with a single private address. Because virtually all NAT routers perform port address translation, most routers that are configured with NAT are really performing PAT. When you use a NAT router, you are normally using PAT and not just NAT. (NAT is typically used synonymously with PAT.) Classless InterDomain Routing (CIDR) allows for non-default subnet masks (variable length subnet mask or VLSM).

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You have a computer that is connected to the Internet through a NAT router. You want to use a private addressing scheme for your computer. Which of the following IP addresses could you assign to the computer? (Select all that apply.) 172.18.188.67 192.168.12.253 10.0.12.15 32.188.99.10 224.15.166.12 240.12.188.1 127.0.0.1

answer

172.18.188.67 192.168.12.253 10.0.12.15 Explanation Of the addresses listed here, the following are in the private IP address ranges: • 10.0.12.15 (private range = 10.0.0.0 to 10.255.255.255) • 172.18.188.67 (private range = 172.16.0.0 to 172.31.255.255) • 192.168.12.253 (private range = 192.168.0.0 to 192.168.255.255)

question

Which of the following IP addresses is a valid IP address for a host on a public network? 192.168.16.45 10.3.125.2 142.15.6.1 172.16.254.12

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142.15.6.1 Explanation A public network is a network that does not limit traffic to members of a corporation or other group. The Internet is an example of a public network. Certain sets of IP addresses are reserved for private networks only and cannot be used on public networks. They are: • 10.0.0.0 to 10.255.255.255 • 172.16.0.0 to 172.31.255.255 • 192.168.0.0 to 192.168.255.255

question

You have a small network at home that is connected to the Internet. On your home network you have a server with the IP address of 192.168.55.199/16. You have a single public address that is shared by all hosts on your private network. You want to configure the server as a Web server and allow Internet hosts to contact the server to browse a personal Web site. What should you use to allow access? DNS A record Static NAT DNS CNAME record Multicast Dynamic NAT

answer

Static NAT Explanation Static NAT maps an internal IP address to a static port assignment. Static NAT is typically used to take a server on the private network (such as a Web server) and make it available on the Internet. External hosts contact the internal server using the public IP address and the static port. Using a static mapping allows external hosts to contact internal hosts. Dynamic NAT automatically maps internal IP addresses with a dynamic port assignment. On the NAT device, the internal device is identified by the public IP address and the dynamic port number. Dynamic NAT allows internal (private) hosts to contact external (public) hosts but not vice versa. External hosts cannot initiate communications with internal hosts. DNS records associate a host name with an IP address. With multicast, a single data stream can be forwarded to all computers that are members of the same multicast group.

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Which of the following are valid IPv6 IP addresses? Select all that apply. 343F:1EEE:ACDD:2034:1FF3:5012 165.15.78.53.100.1 127.0.0.1 141:0:0:0:15:0:0:1 192.168.2.15 6384:1319:7700:7631:446A:5511:8940:2552

answer

141:0:0:0:15:0:0:1 6384:1319:7700:7631:446A:5511:8940:2552 Explanation An IPv6 IP address is a 128-bit address listed as eight 16-bit hexadecimal sections. Leading zeros can be omitted in each section. Therefore, 6384:1319:7700:7631:446A:5511:8940:2552 and 141:0:0:0:15:0:0:1 are both valid IPv6 IP addresses. A single set of all zero sections can be abbreviated with two colons (::). Therefore, 141::15:0:0:1 would also be a valid address.

question

Which of the following is a valid IPv6 address? FEC0::AB:9007 FEC0:9087:AB04:9900:7GA2:7788:CEDF:349A 199.12.254.11 FEC0:AB98::A7::9845:4567 FEC0:AB04:899A

answer

FEC0::AB:9007 Explanation FEC0::AB:9007 is a valid IPv6 address. The :: in the address replaces blocks of consecutive 0's. The longer form of this address would be FEC0:0000:0000:0000:0000:0000:00AB:9007. Leading 0's within a quartet can also be omitted. You can only omit one block of 0's using the double colon. Each number in the IPv6 address must be between 0-9 or A-F? G is not a valid number for the IPv6 address. An address without double colons should have a total of 32 hexadecimal numbers in 8 blocks.

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Which of the following address types is shared by multiple hosts, and is used to form groups of computers that should receive the same data stream? Simplex Half-duplex Multicast Unicast Broadcast

answer

Multicast Explanation A multicast address is an address that identifies a group of computers. Members of the group share the same multicast address. A unicast address is an address that identifies a single host. A broadcast address is an address that is sent to all hosts. Broadcast traffic is typically only forwarded within (but not between) a subnet. Simplex communication uses a single channel for both sending and receiving. Half-duplex uses a separate channel for sending and receiving, but the channels are shared by multiple devices and can only be used by a single device at a time.

question

Which type of address is the IP address 232.111.255.250? Multicast Unicast Private Broadcast

answer

Multicast Explanation The address 232.111.255.250 is a multicast address. A multicast address is an address that identifies a group of computers. Members of the group share the same multicast address. Multicast addresses are in the range of 224.0.0.0 to 239.255.255.255. A unicast address is an address that identifies a single host. A broadcast address is an address that is sent to all hosts. Broadcast addresses are the last possible address on a subnet (typically ending in 255). The private IPv4 address ranges are: • 10.0.0.1 to 10.255.255.254 • 172.16.0.1 to 172.31.255.254 • 192.168.0.1 to 192.168.255.254

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Which type of address is used in a packet to address the packet to a single host? Multicast Fullduplex Unicast Simplex Broadcast

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Unicast Explanation A unicast address is an address that identifies a single host. A broadcast address is an address that is sent to all hosts. Broadcast traffic is typically only forwarded within (but not between) a subnet. A multicast address is an address that identifies a group of computers. Members of the group share the same multicast address. Simplex communication uses a single channel for both sending and receiving. Full-duplex has a dedicated send and receive channel between any two hosts.

question

Which protocol does an IP host use to inform a router that it wants to receive specific multicast frames? SNMP IP IGMP ICMP MGP

answer

IGMP Explanation IP hosts use the IGMP or Internet Group Management Protocol to inform multicast-enabled routers that they want to receive specific multicast frames.

question

Which type of address is the IP address 198.162.12.254/24? Unicast Private Multicast Broadcast

answer

Unicast Explanation The address 198.162.12.254 is a unicast address that identifies a single host on the 198.162.12.0 subnet. 198.162.12.255 is the broadcast address for the subnet. Multicast addresses are in the range of 224.0.0.0 to 239.255.255.255. The private IPv4 address ranges are: • 10.0.0.1 to 10.255.255.254 • 172.16.0.1 to 172.31.255.254 • 192.168.0.1 to 192.168.255.254

question

Which of the following features is used with digital IP phones to supply power through a switch port? VPN Spanning tree PoE 802.1x Trunking

answer

PoE Explanation Power over Ethernet (PoE) supplies power to end devices through the RJ45 Ethernet switch port. Power to the phone is carried on unused wires within the drop cables. Spanning tree is a protocol on a switch that allows the switch to maintain multiple paths between switches within a subnet. The spanning tree protocol runs on each switch and is used to select a single path between any two switches. Trunking allows a switch to forward VLAN traffic between switches. 802.1x is an authentication protocol used with port security (or port authentication).

question

Which of the following protocols are used with VoIP? (Select two.) SNMP SIP SMTP RTP NTP

answer

SIP & RTP Explanation Voice over IP (VoIP) uses the following protocols: • Real-Time Transport Protocol (RTP) packets contain the actual voice data. • Session Initiation Protocol (SIP) is used to set up, maintain, teardown, and redirect the call. NTP is used for synchronizing time between devices. SNMP is used by devices for sending configuration information. SMTP is used for sending email.

question

Which of the following protocols is used by VoIP to set up, maintain, and terminate a phone call? TLS SIP NTP RTP SSH

answer

SIP Explanation The Session Initiation Protocol (SIP) is used to set up, maintain, teardown, and redirect the call. The Real-Time Transport Protocol (RTP) contains the actual voice data. SSH is used for secure remote administration of a network device. TLS is used to add security to other protocols. NTP is used for synchronizing clocks on network devices.

question

You need to provide DHCP and file share services to a physical network. These services should be deployed using virtualization. Which type of virtualization should you implement? Virtual networks Network as a Service (NaaS) Virtual servers Virtual desktops

answer

Virtual servers Explanation Server virtualization runs multiple instances of a server operating system on a single physical computer. With server virtualization, you can migrate servers on older hardware to newer computers, or add virtual servers to computers with extra unused hardware resources. Virtual desktops do not provide DHCP services. Virtual networks allow virtual servers and desktops to communicate with each other, and they can also allow communication (via the host operating system) to network devices out on the physical network. Network as a Service (NaaS) servers and desktops that are all virtualized and managed by a contracted third-party.

question

In virtualization, what is the role of the hypervisor? A hypervisor is a software implementation of a computer that executes programs like a physical machine. A hypervisor allows virtual machines to interact with the hardware without going through the host operating system. A hypervisor has the actual hardware in place on the machine, such as the hard disk drive(s), optical drive, RAM, and motherboard. A hypervisor is created within the host operating system and simulates a hard disk for the virtual machine.

answer

A hypervisor allows virtual machines to interact with the hardware without going through the host operating system. Explanation A hypervisor is a thin layer of software that resides between the virtual operating system(s) and the hardware. A hypervisor allows virtual machines to interact with the hardware without going through the host operating system. A hypervisor manages access to system resources such as: • CPU • Storage • RAM A physical machine (also known as the host operating system) has the actual hardware in place on the machine, such as the hard disk drive(s), optical drive, RAM, motherboard, etc. A virtual machine is a software implementation of a computer that executes programs like a physical machine. The virtual machine(s) appear to be a self-contained and autonomous system(s). A virtual hard disk (VHD) is a file that is created within the host operating system and that simulates a hard disk for the virtual machine.

question

Which component is most likely to allow physical and virtual machines to communicate with each other? Host operating system Virtual desktop Virtual switch VHD

answer

Virtual switch Explanation Virtual switches allow multiple virtual servers and/or desktops to communicate on virtual network segments and/or the physical network. Virtual switches are often configured in the hypervisor. A virtual hard disk (VHD) is a file that is created within the host operating system and that simulates a hard disk for the virtual machine. A physical machine (also known as the host operating system) has the actual hardware in place on the machine, such as the hard disk drive(s), optical drive, RAM, motherboard, etc. A virtual desktop is a virtual machine in a software implementation of a computer that executes programs like a physical machine.

question

What type of virtualization completely simulates a real physical host? Full virtualization Semi-virtualization Paravirtualization Partial virtualization

answer

Full virtualization Explanation In full virtualization, the virtual machine completely simulates a real physical host. This allows most operating systems and applications to run within the virtual machine without being modified in any way. In partial virtualization, only some of the components of the virtual machine are virtualized. Be aware of the following: •The operating system uses some virtual components and some real physical hardware components in the actual device where the hypervisor • The operating system or application must be modified to run in a partial virtualization environment. In paravirtualization, the hardware is not virtualized. Be aware of the following: • All of the guest operating systems running on the hypervisor directly access various hardware resources in the physical device? components are not virtual. • The guest operating systems run in isolated domains on the same physical hardware. • The operating system or application must be modified before they can run in a paravirtualization environment.

question

In troubleshooting a router,you want to identify which other devices are connected to the router,as well as the subnet addresses of each connected subnet. Which type of document would most likely have this information?

answer

Network Diagram

question

You are in the habit of regularly monitoring performance statistics for your devices.You find that this month a specific server has averaged a higher number of active connections than last month. Which type of document should you update to reflect the change?

answer

Baseline

question

You want to make sure that the correct ports on a firewall have been opened or closed.Which document should you check?

answer

Configuration Documentation

question

Which of the following information are you likely to find in a policy document?

answer

A requirement for using encrypted communications for Web transactions.

question

Which of the following documents would likely identify that drop cables on your network use the T568A standard?

answer

Wiring Schematic

question

A new law was recently passed that states that all business must keep a history of all e-mails sent between members of the board of directors.You need to ensure that your organization complies with this law. Which document type would you update first in response to this new law?

answer

Policy

question

You are troubleshooting a work station connection to the network.During your troubleshooting,you replace the drop cable connecting the computer to the network. Which type of document should you update?

answer

Change documentation

question

You are troubleshooting a workstation connection to the network.During your troubleshooting,you move the cable in the wiring closet to a different port on the patch panel. Which type of document should you update?

answer

Wiring schematic

question

Which type of documentation would you consult to find the location of RJ-45 wall jacks and their endpoints in the intermediate distribution closet?

answer

Wiring schematic

question

You are troubleshooting the connection of a computer in an office to the punch down block in the distribution closet.Which document would you consult to identify the termination of the cable on the punch down block based on the wall jack location in the office?

answer

Wiring schematic

question

Which of the following information are you likely to find in a procedure document?

answer

Details on how to test and deploy patches.

question

You are concerned about the amount of traffic that passed through a router on our network.You want to see how the amount of traffic has changed over time. Which document would help in identifying past average network traffic?

answer

Baseline

question

You need to find out what kind of laws might apply to the design and operation of your network.Which type of document would you consult?

answer

Regulation

question

Which protocol uses traps to send notifications from network devices?

answer

SNMP

question

Because of an unexplained network slowdown on your network,you decide to install monitoring software on several key network hosts to locate the problem.You will then collect and analyze the data from central network host. What protocol will the software use to detect the problem?

answer

SNMP

question

You are an administrator for a large company.You are setting up a computer at a worker's home so he can telecommute while he recovers from surgery.You want to connect to the UNIX server at the office to update his account information. Which utility should you use to accomplish this task?

answer

Telnet

question

You manage a server at a work that has just been configured with a new application.Consequently,the server has crashed several times during the last week.You think you have the problem resolved,but you would like to be able to manage the server remotely in case there is a problem. Which of the following protocols would you use for a remote management? (Select two.)

answer

ICA VNC

question

Which of the following protocols or services would you associate with Window's Remote Desktop Services network traffic?

answer

RDP

question

You want to be able to identify traffic that is being generated and sent through the network by a specific application running on a device. Which tool should you use?

answer

Protocol analyzer

question

You have a Web site that customers use to view product information and place orders.You would like to identify the maximum number of simultaneous sessions that this server can maintain before performance is negatively impacted. Which tool should you use?

answer

Load tester

question

You are concerned about attacks directed against the firewall on your network.You would like to examine the content of individual frames sent to the firewall. Which tool should you use?

answer

Packet sniffer

question

You connect a packet sniffer to a switch to monitor frames on your local area network.However,the packet sniffer is only able to see broadcast frames and frames addressed specificaly to the host device. Which feature should you enable on the switch so you can see frames from all devices connected to the switch?

answer

Mirroring

question

You have a WAN link that connects two sites.The WAN link is supposed to provide 1.5 Mbps of bandwidth.You want to perform a test to see the actual bandwidth of the link. Which tool should you use?

answer

Throughput tester

question

You decide to use a packet sniffer to identity the type of traffic sent to a router.You run the packet sniffing software on a device which is connected to a hub with three other computers.The hub is connected to the same switch that is connected to the router. When you run the software,you only see frames addressed to the four workstations but not to the router. Which feature should you configure?

answer

Mirroring

question

You decide to use a packet sniffer to identify the type of traffic sent to a router.You run the packet sniffing software on a device which is connected to the same hub that is connected to the router. When you run the software,you only see frames addressed to the workstation and not other devices. Which feature should you configure?

answer

Promiscuous mode

question

You want to know what protocols are being used on your network.You'd like to monitor network traffic and sort traffic based on protocol. Which tool should you use?

answer

Packet sniffer

question

You have installed a new application on a network device.During testing,it appears as if the software is causing other services running on the device to stop responding. Which tool should you consult to identify the problem?

answer

Application log

question

You have a small network of devices connected together using a switch.You want to camputer the traffic that is sent from Host A to Host B. On Host C,you install a packet sniffer that captures network traffic.After running the packet sniffer, you cannot find any captured packets between Host A and Host B. What should you do?

answer

Run the packet sniffer application on Host B.

question

You manage a firewall that connects your private network to the Internet.You would like to see a record of every packet that has been rejected by the firewall in the past month. Which tool should you use?

answer

Event log

question

Which of the following allows you to save frequently-accessed Web sites on your local area network for later retrieval?

answer

Proxy

question

Which of the following devices is capable of performing routing of IP packets at wire speeds using an ASIC module instead of the CPU or software?

answer

Layer 3 switch

question

You have a network server with two network interface cards.You want both network adapters to be used at the same time to connect to the same network to double the amount of data the server can send. Which feature would you use?

answer

Layer 3 switch

question

You manage a network that uses multiple switches .You want to provide multiple paths between switches so that if one link goes down, and alternate path is available. Which feature should your switch support?

answer

Spanning tree

question

You want to reduce collisions by creating separate collision domains and virtual LANs. Which of the following devices should you use?

answer

Swich

question

A switch receives a frame addressed to the MAC address FF:FF:FF:FF:FF:FF.What will the switch do with the frame?

answer

Send it out to all ports except for the port it was received on.

question

You manage a single subnet with three switches.The switches are connected to provide redundant paths between the switches. Which feature prevents switching loops and ensures there is only a single active patch between any two switches?

answer

Spanning tree

question

Which of the following features dynamically places switch ports in blocking or forwarding states?

answer

Spanning tree

question

Angela i the network administrator for a rapidly growing company with a 100BaseT network.Users have recently complained about slow file transfers.In a check of network traffic,Angela discovers a high number of collisions. Which connectivity device would best reduce the number of collisions and provide for future growth?

answer

Switch

question

What is the purpose of using Ethernet bonding? (Select two.)

answer

Increases network performance Provides a failover solution for network adapters

question

You have a Web server on your network that hosts the public Web site for your company.You want to make sure that the Web site will continue to be available even if a NIC,hard drive,or other problem prevents the server from responding. Which solution should you implement?

answer

Load balancing

question

QoS provides which of the following on a network?

answer

Reduces latency of time-sensitive traffic

question

Which of the following devices accepts incoming clients request and distributes those request to specific servers?

answer

Load balancer

question

You manage a server that runs your company Web site.The Web site includes streaming video that shows features of some of your products. The link connecting your server to the Internet charges based on bandwidth use.When the bandwidth spikes,s does your bill.You would like to implement a solution to prevent the amount of traffic sent over the WAN link from exceeding a specific level. What solution should you implement?

answer

Traffic shaper

question

You have a web server on your network that hosts the public Web site for your company.You want to make sure that a failure of the NIC in the server does not prevent the Web site from being accessible on the Internet. Which solution should you implement?

answer

Ethernet bonding

question

Which of the following solutions are most likely implemented with VoIP to ensure timely delivery of voice data? (Select two.)

answer

QoS Traffic shaping

question

You manage a server that runs your company Web site.The Web server has reached its capacity,and the number of client requests is greater than the server can handle. You would like to find a solution so that static Web content can be offloaded to a different server,while the Web server continues to process dynamic content. Which solution should you implement?

answer

Proxy server

question

Your network conducts training sessions for high-profile clients.As part of the training,clients connect to get a video feed of the instructor and other class activities.You want to make sure that video traffic related to the training is not delayed on the network. Which solution should you implement?

answer

QoS

question

You manage a network that uses multiple switches.You want to provide multiple paths between switches so that if one link goes down,an alternate path is available. Which feature should your switch support

answer

Spanning tree

question

You manage a server that runs your company Web site.The Web server has reached its capacity,and the number of client requests is greater than the server can handle. You would like to find a solution so that a second server can respond to request for Web site content. Which solution should you implement?

answer

Load balancing

question

You have a Web site that uses multiple servers for different types of transactions.For example,one server is responsible for static Web content,while another is responsible for secure transactions. You would like to implement a device to speed up access to your Web content.The device should be able to distribute request between the various Web servers using specialized hardware and not just as software configuration.In addition,SSL sessions should use the hardware components in the device to create the SSL sessions. Which type of device should you choose?

answer

Content switch

question

Which of the following protocols are used with VoIP?

answer

SIP RTP

question

Which of the following protocols is used by VoIP to set up, maintain, and terminate a phone call?

answer

SIP

question

Which of the following features is used with digital IP phones to supply power through a switch port?

answer

PoE

question

Which type of address is the IP address 232.111.255.250?

answer

Multicast

question

Which of the following IP addresses is a valid IP address for a host on a public network?

answer

142.15.6.1

question

You have a computer that is connected to the internet through a NAT router. You want to use a private addressing scheme for your computer. Which of the following IP addresses could you assign to the computer?

answer

172.18.188.67 10.0.12.15 192.168.12.253

question

Which of the following is not one of the ranges of IP addresses defined in RFC 1918 that are commonly used behind a NAT server?

answer

169.254.0.1 - 169.254.255.254

question

You have a small network at home that is connected to the Internet. On your home network you have a server with the IP address of 192.138.55.199/16. You have a single public address that is shared by all hosts on your private network. You want to configure the server as a Web server and allow Internet hosts to contact the server to browse a personal website. What should you use to allow access?

answer

Static NAT

question

You have a small network at home that is connected to the Internet. On your home network you have a server with the IP address of 192.168.55.199/16. All computers on your home network can connect to the Internet. From your work office, you try to access your home computer using its IP address, but are unable to communicate with the server. You are able to connect to other hosts on the Internet. Why cant you access the server?

answer

Private addresses are not accessible through the Internet.

question

You have a private network connected to the Internet. Your routers will not share routing information about your private networkwith Internet routers. Which of the following best describes the type of routing protocol you would use?

answer

IGP

question

What are the main differences between the OSPF and IS-IS routing protocols?

answer

OSPF requires an area 0, while IS-IS does not.

question

What information does the next hop entry in the routing table indentify?

answer

The first router in the path to the destination network.

question

Which of the following are often synonymous with or made possible by CIDR?

answer

Classless VLSM

question

You have a router configured to share routing information using RIP. In addition, you have a single static route that identifies a default route for all other networks. The next hop router for the default route has changed. You need to make changes with the least amount of effort possible. What should you do?

answer

Manually configure the default route to point to the next hop router.

question

Which of the following statements about RIP is true?

answer

RIP uses hop counts as the cost metric.

question

You manage a server that uses an IP address of 192.168.255.188 with a mask of 255.255.0.0. Which of the following describes the address type?

answer

Classless.

question

Which two of the following statements about the Dynamic Host Configuration Protocol (DHCP) are true?

answer

It can deliver other configuration information in addition to IP addresses. A DHCP server assigns addresses to requesting hosts.

question

You have a network with 50 workstations. You want to automatically configure workstations with the IP address, subnet mask, and default gateway values. Which device should you use?

answer

DHCP Server.

question

Which of the following IP addresses ranges is reserved for Automatic Private IP Addressing?

answer

169.254.0.1 - 169.254.255.254

question

You have a TCP/IP network with 50 hosts. There has been in consistant communication problems between hosts. You run a protocol analyzer and discover that two hosts have the same IP address assigned. Which protocol can you implement on your network to help prevent problems such as this?

answer

DHCP

question

What is the network address and subnet mask used by APIPA?

answer

255.255.0.0 169.254.0.0

question

Which of the following strategies are used to prevent duplicate IP addresses being used on a network?

answer

Install a DHCP server on the network. Use Automatic Private IP Addressing.

question

In an IP addressing scheme using default subnet masks, which of the following IP addresses can you assign to a host?

answer

132.70.254.15

question

Which of the following best describes the purpose of using subnets?

answer

Subnets divide an IP network address into multiple network addresses.

question

A host has the address 100.55.177.99/16. Which of the following is the broadcast address for the subnet?

answer

100.55.255.255

question

Which of the following is a valid IP address?

answer

2.2.2.2 172.16.1.26

question

You are configuring the IP address for a host and have been asked to use the address 192.160.99.110/16. What subnet mask value would you use?

answer

255.255.0.0

question

What is the default subnet mask for the IP address 203.111.3.3?

answer

255.255.255.0

question

What is the binary format for the following decimal IP address 131.9.202.11

answer

10000011.00001001.11001010.01101111

question

A host on the network has an IP address of 129.11.99.78 using the default subnet mask. How would you identify the address and mask using CIDR notation?

answer

129.11.99.78/16

question

Your network has been assigned the Class B network address of 179.113.0.0 Which three of the following can be assigned to hosts on your network?

answer

179.113.89.0 179.113.65.12 179.113.0.118

question

Consider the following IP address. 1. 124.77.8.5 2. 131.11.0.9 3. 190.66.250.10 4. 196.5.89.44 Which list represents the IP address class of each listed IP address?

answer

Class A, Class B, Class B, Class C.

question

What is the decimal format for the following binary IP address?

answer

206.58.170.67

question

You manage a subnet that uses the following subnet address: 198.162.1.0/23. Which of the following best describes how addressing is configured for the subnet?

answer

Supernetting

question

Your network has been assigned the Class B address of 130.15.0.0. Which of the following is not an address you can assign to a node on your network?

answer

130.16.61.3

question

Which three of the following are not valid IP address?

answer

145.8.260.7 257.0.122.55 45.22.156.256

question

You have been told to assign the IP address 21.155.67.188 to a host on the network using the default subnet mask. Which mask should you use?

answer

255.0.0.0

question

Which of the following is not a reason to use subnets on a network?

answer

Combine different media type on to the same subnet.

question

Which of the following is the last IP address that can be assigned to hosts on the 1676.70.0.0 using the default subnet mask?

answer

166.70.255.254

question

Which of the following IP addresses have a default subnet mask of 255.255.0.0?

answer

129.0.0.1 191.168.2.15 168.16.5.1

question

Which of the following is the last IP address that can be assigned to hosts on the 211.70.0.0 network using the default subnet mask?

answer

211.70.0.254

question

Your network has been assigned the Class C address of 200.78.151.0. Which three of the following addresses can be assigned to hosts on your network?

answer

200.78.151.252 200.78.151.12 200.78.151.111

question

Which of the following is the first IP address that can be assigned to hosts on the 166.70.0.0 network using the default subnet mask?

answer

166.70.0.1

question

Which three of the following IP addresses belong to the Class A network 114.0.0.0? ( Assume the network is indicated by the default portion of the IP address.)

answer

114.0.0.15 114.122.66.12 114.58.12.0

question

Which three of the following IP addresses are Class B addresses?

answer

132.12.0.0 190.65.2.0 129.0.0.0

question

Which three of the following IP addresses are Class C addresses?

answer

192.15.5.55 223.16.5.0 225.55.0.0

question

You need to provide DHCP and file share services to a physical network.These services should be deployed using virtualization. Which type of virtualization should you implement?

answer

Virtual servers

question

What type of virtualization completely simulates a real physical host?

answer

Full virtualization

question

Which component is most likely to allow physical and virtual machines to communicate with each other?

answer

Virtual swich

question

You have configured a virtual network which includes the following virtual components Four virtual machines (i.e., Virtual OS1,Virtual OS2,etc.) One virtual switch The virtual switch is connected to a physical network to allow the virtual machines to communicate with the physical machines out on the physical network. Given the port configuration for the virtual switch and the physical switch in the table below, click on all of the virtual and physical machines that Virtual OS1 can communicate with.

answer

Virtual OS3 Physical OS1-1 Physical OS1-2 Physical OS1-3 Physical OS1-4

question

In virtualization,what is the role of the hypervisor?

answer

A hypervisor allows virtual machines to interact with the hardware without going through the host operating system.

question

You have configured a virtual network which includes the following virtual components Four virtual machines (i.e., Virtual OS1,Virtual OS2,etc.) One virtual switch The virtual switch is connected to a physical network to allow the virtual machines to communicate with the physical machines out on the physical network. Given the port configuration for the virtual switch and the physical switch in the table below, click on all of the virtual and physical machines that Virtual OS1 can communicate with.

answer

Virtual OS2 & 3

question

Which type of address is used in a packet to address the packet to a single host?

answer

Unicast

question

Which type of address is the IP address 198.162.12.254/24?

answer

Unicast

question

Which protocol does an IP host use to inform a router that it wants to receive specific multicast frames?

answer

IGMP

question

Which of the following is a valid IPv6 address?

answer

FEC0::AB:9007

question

Which of the following are valid IPv6 IP addresses? Select all that apply.

answer

6384:1319:7700:7631:446A:5511:8940:2552 141:0:0:0:15:0:0:1

question

Your computer has an IP address of 161.13.5.15.You computer is on a:

answer

Public network

question

Which organization is responsible for allocation public IP addresses?

answer

IANA

question

Which of the following associates a port number with a host on a privet network?

answer

PAT

question

A router is connected to network 192.168.1.0/24 and network 192.168.2.0/24.The router is configured to use RIP and has learned of networks 192.168.3.0/24 and 192.168.4.0/24.There is no default route configured on the router. The router receives a packet addressed to network 10.1.0.0/16. What will the router do with the packet?

answer

Drop the packet.

question

Under which of the following circumstances might you implement GBP on your company network and share routes with Internet routers?

answer

If the network is connected to the Internet using multiple ISPs.

question

Which of the following routing protocols is classified as a balanced hybrid of routing protocol.

answer

EIGRP

question

Which of the following routing protocols is used by routers on the internet or learning and sharing routes?

answer

BGP

question

Which of the following protocols has a limit of 15 hops between any two networks?

answer

RIP

question

What is the main difference between RIP and RIPv2?

answer

RIP is a classful protocol,while RIPv2 is a classless protocol.

question

Which of the following is a characteristic of static routing when compared to dynamic routing?

answer

All routes must be manually updated on the router.

question

You have a network configured to use the OSPF routing protocol. Which of the following describes the state when all OSPF routers have learned about all other routes in the network?

answer

Convergence

question

Which of the following routing protocols divides the network into areas,with all networks required to have an area 0 (area 0 identifying the backbone areas)?

answer

OSPF

question

Which of the following best describes OSPF

answer

OSPF is a classless link-state routing protocol.

question

Which of the following routing protocols are classifies as link state routing protocols? (Select two.)

answer

OSPF IS-IS

question

A router is connected to network 192.168.1.0/24 and network 192.168.2.0/24.The router is configured to use RIP and has learned of networks 192.168.3.0/24 and 192.168.4.0/24. The next hop router for network 192.168.3.0 has changed.You need to make the change with the least amount of effort possible.What should you do?

answer

Wait for convergence to take place.

question

A router is connected to network 192.168.1.0/24 and network 192.168.2.0/24. The router is configured to use RIP and has learned of networks 192.168.3.0/24 and 192.168.4.0/24.The router is also configured with a static router of 0.0.0.0 with a mask of 0.0.0.0. The router receives a packet addressed to network 10.1.0.0/16.What will the router do with the packet?

answer

Forward the packet to the next hop router specified by the route to network 0.0.0.0.

question

Which of the following terms are often synonymous with or made possible with CIDR? (Select two.)

answer

Classless VLSM

question

What type of component is most likely to allow physical and virtual machines to communicate with each other?

answer

Virtual switch

question

Which of the following address types is shared by multiple hosts, and is used to form groups of computers that should receive the same data stream?

answer

Multicast

question

The media access control method of all Ethernet networks is

answer

CSMA/CD

question

Which of the following connectors is used with Ethernet 10BaseT networks?

answer

RJ-45

question

Which of the following use the CSMA/CD access method?(2 answers)

answer

1000BaseT, 10BaseT

question

A network is connected following the IEEE 802.3 specifications. Which of the following best describes when a device can transmit messages?

answer

The device listens to determine if the transmission media is free.

question

Which of the following physical topologies are used with Ethernet networks?(2 answers)

answer

Bus, Star

question

With an Ethernet 10BaseT network, the maximum cable length between a computer and the hub is:

answer

100 meters

question

Which of the following are requirements of the 1000BaseT Ethernet standards?(3 answers)

answer

CAT 5e cabling RJ-45 connectors The cable length must be less than or equal to 100m

question

You want to implement an Ethernet network at very long distances using fiber optic cables. Which standard and cable type would you choose?(2 answers)

answer

1000BaseLX Single Mode Fiber

question

You have been tasked with designing a high-speed Ethernet network. Your client's building already has 150 ohm shielded twisted pair wiring installed. Due to budget constraints, they have asked you to reuse the existing wiring instead of installing new fiber optic cabling. Which Ethernet standard could you implement in this situation?

answer

1000BaseCX

question

Your network follows the 100BaseTx specifications for Fast Ethernet. What is the maximum cable segment length allowed?

answer

100 meters

question

Which of the following Ethernet standards uses fiber optic cabling?(2 answers)

answer

100BaseFX 1000BaseLX

question

You have been tasked with designing an Ethernet network. Your client needs to implement a very high-speed network backbone between campus buildings; some of which are around 300 m apart. Fiber-optic cabling has already been installed between buildings. Your client has asked that you use the existing cabling that operates at full-duplex. Which Ethernet standard meets these guidelines?(2 answers)

answer

1000BaseSX, 10GBaseSR

question

Which Gigabit Ethernet standard uses multimode fiber-optic cabling and supports network segments up to a maximum of 550 m long?

answer

1000BaseSX

question

What type of cabling is used with 100BaseTX Fast Ethernet networks?

answer

Type 1A STP or Category 5 UTP

question

What is the minimum cable specification that supports 1000 Mbps Ethernet?

answer

Cat 5

question

What topology is used with 100BaseTX Fast Ethernet networks?(2 answers)

answer

Physical star/logical bus, Physical star/logical star

question

Which Gigabit Ethernet standard can support long network segments up to a maximum of 5 km when used with single mode fiber-optic cable?

answer

1000BaseLX

question

Ethernet 100BaseFX networks use what type of cabling?

answer

Fiber-optic

question

Your network follows the 100BaseFX specifications for Fast Ethernet, and uses half-duplex, multimode cable. What is the maximum cable segment length allowed?

answer

412 meters

question

Which of the following standards is used by SONET?

answer

10GBaseLW

question

You are planning a network for an educational campus. Due to the size of the buildings and the distance between them, you have elected to use 10BaseFL hubs, cabling, and network interface cards. What is the maximum length for the network cable between a workstation and a hub?

answer

2000 meters

question

You would like to implement 10 Gbps Ethernet over a distance of 1 km or greater. Which of the following would be the minimum requirement for the implementation?(2 answers)

answer

10GBaseLR standards 10GbaseEr Standards Single mode fiber

question

You have a router configured to share routing information using RIP. In addition, you have a single static route that identifies a default route for all other networks?

answer

Manually reconfigure the default route to point to the new next hop router.

question

Which of the following is a characteristic of static routing when compared to dynamic routing?

answer

All routers must be manually updated on the router.

question

Network needs to support 1000 Mbps over ethernet. What cables must you replace?

answer

cat 3 cat4

question

Workstation -> Router Config Port. What cable?

answer

Rollover

question

Which standard is typically used in a rollover cable?

answer

RJ-232

question

Workstation -> Switch through regular port (not uplink) and switch doesn't support auto-mdi.

answer

Straight Through

question

Which connector is usually on one end of a rollover?

answer

serial

question

You want to create a rollover cable that has an RJ-45 connector on both ends. How should you connect the wires within the connectors?

answer

Connect pin 1 to pin 8, pin 2 to pin 7, pin 3 to pin 6, and pin 4 to pin 5

question

You want to connect the LAN port on a router to the uplink port on a switch. The switch does not support auto-MDI. Which type of cable should you use?

answer

Crossover

question

You need to transfer data from one laptop to another and would like to use an Ethernet cable. You do not have a hub or a switch. Which type of cable should you use?

answer

Crossover

question

You have two switches that you need to connect using their uplink ports. The switches do not support auto-MDI. Which type of cable should you use?

answer

Crossover

question

Which of the following is a valid MAC address? A CO-34-FF-15-01-8E B 25s.255.2s5.0 C 34-9A-86-1G-B3-24 D 83-5A-5B-0B-31-55-F1 E 192.168.12.15 F 73-99-12-61-15

answer

A CO-34-FF-15-01-8E

question

Which of the following statements accurately describes how a modem works? (Select two.) A It demodulates analog data from a telephone network into digital PC data. B It transmits digital signals over ordinary telephone copper wiring at a rate up to 128 Kbps. C It modulates digital data from the PC into analog data and transmits it on a telephone network. D It communicates over a telephone network using digital signals. E It modulates digital data from a telephone network into analog data that a PC can use. F It demodulates analog PC data into digital data that can be transmitted through a telephone network.

answer

A It demodulates analog data from a telephone network into digital PC data. C It modulates digital data from the PC into analog data and transmits it on a telephone network.

question

What type of module might a switch use to allow it to modify the media type supported by a switch port? (Select two.) A MPLS B SFP C OC-X D GBIC

answer

B SFP D GBIC

question

At which OSI model layer does a media converter operate? A Layer 1 B Layer 2 C Layer 3 D Layer 4

answer

A Layer 1

question

Which of the following is a valid MAC address? A 145.65.254.1O B FABC.875E.9BG6 C 95ABC2F4.ABC5.569D.43BF D AB.07.CF.62.16.BD

answer

D AB.07.CF.62.16.BD

question

A host wants to send a message to another host with the IP address 115.99.80.157. IP does not know the hardware address of the destination device. Which protocol can be used to discover the MAC address? A Boorp B DHCP C ICMP D ous E IGMP F ARP

answer

F ARP

question

You have a server that has a 100BaseFX network interface card that you need to connect to a switch. The switch only has 100BaseTX switch ports. Which device should you use? A Media converter B Bridge C Repeater D Hub E Gateway

answer

A Media converter

question

What device sends signals from a computer onto a network? A Cable B Router C Transceiver D Gateway

answer

C Transceiver

question

Which of the following is true about the MAC address? (Select two.) A It is typically represented by octets of decimal numbers between 0-255. B It is a 48-bit address. C It is a 32-blt address. D It is a 64-blt address. E It is typically represented by hexadecimal numbers.

answer

B It is a 48-bit address. E It is typically represented by hexadecimal numbers.

question

Which network component connects a device with the transmission media and allows it to send and receive messages? A Client B Network interface card C Peripheral D Protocol E Server

answer

B Network interface card

question

A switch is associated with which OSI model layer? A Data Link B Network C Transport D Physical

answer

A Data Link

question

Which of the following best describes how a switch functions? A It connects multiple cable segments (or devices), and forwards frames to the appropriate segment. B It connects multiple segments of different architectures. It translates frames, and broadcasts them to all of its ports. C It connects multiple cable segments (or devices), and broadcasts frames to all of its ports. D It connects multiple segments of different architectures. It translates frames, and forwards them to the appropriate segment.

answer

A It connects multiple cable segments (or devices), and forwards frames to the appropriate segment.

question

Which of the following devices operate at OSI model layer Z? (Select two.) A Repeater B Router C Firewall D switch E Hub F Network interface card

answer

D switch F Network interface card

question

Which three of the following devices operate at the Data Link layer of the OSI model? A Routers B Network interface cards (NICs) C Hubs D Bridges E Switches F Repeaters

answer

B Network interface cards (NICs) D Bridges E Switches

question

Which of the following devices is used on a LAN and offers guaranteed bandwidth to each port? A Router B switch C Bridge

answer

B switch

question

Your company purchases a new bridge, which filters packets based on the MAC address of the destination computer. On which layer of the OSI model is this device functioning? A Presentation B Session C Transport D Data Link

answer

D Data Link

question

An 8-port switch receives a frame on port number 1. The frame is addressed to an unknown device. What will the switch do? A Send the frame out the destination port. B Drop the frame. C Send the frame out all 8 ports. D Send the frame out ports 2-8.

answer

D Send the frame out ports 2-8.

question

Which of the following hardware devices regenerates a signal out all connected ports without examining the frame or packet contents? (Select two.) A Gateway B Repeater C switch D Hub E Bridge F Router

answer

B Repeater D Hub

question

How do switches and bridges learn where devices are located on a network? A When a frame enters a port, the source IP address is copied from the frame header. B When a frame enters a port, the source MAC address is copied from the frame header. C When a frame enters a port, the destination IP address is copied from the frame header. D When a frame enters a port, the destination MAC address is copied from frame header.

answer

B When a frame enters a port, the source MAC address is copied from the frame header.

question

At which layer of the OSI model do hubs operate? A Layer 3 B Data Link C Physical D Internet

answer

C Physical

question

An access point that conforms to the IEEE 802.11b standard acts most closely to what other networking device? A Hub B Gateway C Patch bay D Router E Terminal

answer

A Hub

question

At what OSI layer does a router operate to forward network messages? A Session B Transport C Network D Physical E Data Link

answer

C Network

question

Which of the following hardware devices links multiple networks and directs traffic between networks? A Repeater B Bridge C Hub D Router

answer

D Router

question

You are the administrator of your company's network. You want to prevent unauthorized access to your intranet from the Internet. Which of the following should you implement? A ICS B Firewall C Proxy server D Packet Internet Groper

answer

B Firewall

question

At which of the following OSI layers does a router operate? A Layer 1 B Layer 2 C Layer 3 D Layer 4

answer

C Layer 3

question

You are the network administrator for a small organization. Recently, you contracted with an ISP to connect your organization's network to the Internet to provide users with Internet access. Since doing so, it has come to your attention that an intruder has invaded your network from the Internet on three separate occasions. What type of network hardware should you implement to prevent this from happening again? A csu/Dsu B Router C Firewall D switch E Hub F Proxy server

answer

C Firewall

question

Which two of the following tasks do routers perform? A Control access to the transmission media B Multiplex signals onto the same transmission media C Maintain information about paths through an internetwork D Route data based on logical network addresses E Route data based on hardware device addresses F Identify devices through hardware addresses

answer

C Maintain information about paths through an internetwork D Route data based on logical network addresses

question

Which of the following is the best device to deploy to protect your private network from a public untrusted network? A Gateway B Router C Firewall D Hub

answer

C Firewall

question

In which of the following situations might you use an RJ-11 connector? A You want to connect the 10BaseT network card in your computer to a switch. B You want to connect your computer to the Internet with a dial-up connection. C You want to upgrade your 10BaseT network to 10OBaseT. D You want to test a network cable to see if there is a break in the line.

answer

B You want to connect your computer to the Internet with a dial-up connection.

question

When would you typically use an RJ-11 connector? A When using single mode fiber optic cables. B When using Cat 3 cables. C When connecting a phone to a phone line. D When using multimode fiber optic cables. E When using Cat 5 or higher cables. F When using RG—6 cables.

answer

C When connecting a phone to a phone line.

question

You are adding new wires in your building for some new offices. The building has a false ceiling that holds the lights. You would like to run your Ethernet cables in this area. Which type of cable must you use? A Fiber optic B pvc C srp D Plenum E Cat 5e or Cat 6e

answer

D Plenum

question

Which of the following applications is more likely to justify the investment in Category 6 cable? A E-maiI B Instant Messaging C Printing D Streaming video

answer

D Streaming video

question

Which of the following cable types often includes a solid plastic core? A cat 5 B cat 3 C Cat 5e D cat 6

answer

D cat 6

question

You are installing networking wiring for a new Ethernet network at your company's main office building. The project specifications call for Category 5 UTP network cabling and RJ-45 wall jacks. Near the end of the project, you run out of wire before the last few runs are complete. You have a spool of Category 3 network cable in storage. Upon investigation, it appears very similar to Category 5 wiring. Should you substitute Category 3 cabling for Category 5 cabling to finish the project? A No, Category 5 cabling has more twists per inch than Category 3 cabling to reduce cross—talk and support higher data rates. B No, Category 3 cabling doesn't support RJ-45 connectors. C No, Category 5 cabling uses a thicker copper wire than Category 3 cable; enabling higher data transmission rates. D No, the sheath surrounding Category 5 cable is much thicker; creating an extra layer of shielding to reduce cross—talk and support higher data rates. E Yes, you can substitute Category 5 wiring with Category 3 wiring, as they are electrically identical

answer

A No, Category 5 cabling has more twists per inch than Category 3 cabling to reduce cross—talk and support higher data rates.

question

Which of the following are characteristics of coaxial network cable? (Choose three.) A It uses two concentric metallic conductors. B It uses two concentric conductors made from plastic or glass which conduct light signals. C It uses RJ-45 connectors D It has a conductor made from copper in the center of the cable. E The ends of the cable must be terminated. F It is composed of four pairs of 22—gauge copper wire. G The conductors within the cable are twisted around each other to eliminate cross—talk.

answer

A It uses two concentric metallic conductors. D It has a conductor made from copper in the center of the cable. E The ends of the cable must be terminated.

question

F—type connectors are typically used with cables using which of the following standards? (Select two.) A RG-59 B RG-6 C RG-58 D cat 5 E Cat 5e F Cat 6e

answer

A RG-59 B RG-6

question

Which of the following cable classifications are typically used for cable and satellite networking with coaxial cables? (Select two.) A RG-6 B RG-8 C RG-58 D RG-59

answer

A RG-6 D RG-59

question

Of the following cables, which offer the best protection against EMI? A Cat 5e B Cat 6e C cat 5 D RG-6

answer

D RG-6

question

You have just signed up for a broadband home Internet service that uses coaxial cable. Which connector type will you most likely use? A RJ-45 B RJ-11 C sc D F-type E ST F smc

answer

D F-type

question

You have a small home network connected to the Internet using an RG-6 cable. You need to move the router connecting the network to the Internet, but can't find any RG-6 cable. Which cable types could you use instead? A RG-59 B RG-8 C RG-8, RG-58, or RG—59 D RG-58 or RG-59 E RG-58 F RG-8 or RG-58

answer

A RG-59

question

Which of the following are advantages of using fiber optic cabling for a network, as opposed to other types of cabling? (Select two.) A Greater cable distances without a repeater B Immunity to electromagnetic interference C Lower installation cost D Faster installation

answer

A Greater cable distances without a repeater B Immunity to electromagnetic interference

question

Which of the following are characteristics of an LC fiber optic connector? (Choose two.) A They use a housing and latch system similar to an RJ-45 UTP connector. B They are threaded. C They use a one—piece bayonet connecting system. D They are half the size of standard connectors. E They can be used with either fiber optic or copper cabling. F They use a stainless steel housing.

answer

A They use a housing and latch system similar to an RJ-45 UTP connector. D They are half the size of standard connectors.

question

Which of the following connectors usually require polishing as part of the assembly process? (Select two.) A ST B AUI C IDC D SC E BNC

answer

A ST D SC

question

Which of the following are characteristics of an MT-RJ fiber optic connector? (Select two.) A They use metal guide pins to ensure accurate alignment. B They use a keyed bayonet. C They use a nickel-plated housing. D They can be used with multimode fiber optic cables. E They must never be used with single-mode fiber-optic cables. F They are used with multifiber fiber optic ribbon cables.

answer

A They use metal guide pins to ensure accurate alignment. D They can be used with multimode fiber optic cables.

question

Which of the following is true about single mode fiber optic network cabling? A The central core is smaller than that of multimode fiber optic cabling. B It transmits multiple rays of light concurrently. C It doesn't support segment lengths as long as that supported by multimode fiber optic cabling. D It's less expensive than multimode fiber optic cabling. E The central core is composed of braided plastic or glass fibers.

answer

A The central core is smaller than that of multimode fiber optic cabling.

question

Of the following cables, which offer the best protection against EMI? A cat 5 B RG-6 C Single mode fiber optic D Cat 5e

answer

C Single mode fiber optic

question

Which of the following forms of optical fiber would usually be used to connect two buildings across campus from each other, which are several kilometers apart? A Dual mode B Fibre Channel mode C Multimode D Single mode

answer

D Single mode

question

Which of the following connectors are used with fiber optic cables and include both cables in a single connector? (Select two.) A LC B ST C sc D MT-RJ E Bixlc

answer

A LC D MT-RJ

question

Which of the following connectors is used with fiber optic cables and connects using a twisting motion? A F-type B LC C sc D ST E Bixlc

answer

D ST

question

You are building network cables and attaching RJ-45 connectors to each end. Which tool do you need for this task? A Crimping tool B Punch down tool C Vampire taps D Needle nose pliers

answer

A Crimping tool

question

When using 110 blocks for connecting Cat5 and higher data cables, which recommendation should you follow? A Use C-5 connectors. B Connect wires using the T568A standard. C Keep wire pairs twisted up to within one—half of an inch of the connector. D Connect wires using the T568B standard.

answer

C Keep wire pairs twisted up to within one—half of an inch of the connector.

question

You are making Ethernet drop cables using Cat5e cable and RJ-45 connectors. You need to remove the plastic coating over the cable to expose the individual wires. Which tool should you use? A Snips B Punchdown tool C Cable stripper D Butt set

answer

C Cable stripper

question

What tool should you use to extend network services beyond the demarc? A Tone generator B Punchdown tool C Crimper D Media certifier

answer

B Punchdown tool

question

You have a network that occupies the top floor of a three story building. The WAN service provider has installed the line for the WAN service into the building in a wiring closet on the main floor. What would you use to relocate the WAN line into a wiring closet on your floor? A Demarc extension B Horizontal cross connect C 66 block D 110 block E Smart jack

answer

A Demarc extension

question

Which of the following describes the point where the service provider's responsibility ends and the customer's responsibility begins for installing and maintaining wiring and equipment? A Smart jack B tor C Punchdown block D Vertical cross connect E Demarc

answer

E Demarc

question

You have a network that occupies all three floors of a building. The WAN service provider has installed the line for the WAN service into the building in a wiring closet on the main floor. You have a second wiring closet on the main floor. You need to connect the two wiring closets. Which of the following are typically used to connect the two wiring closets? (Select two.) A 25 pair BVertical cross connect C Horizontal cross connect D Demarc extension E Smart jack

answer

A 25 pair C Horizontal cross connect

question

Which of the following uses metal clips placed over plastic slots for connecting individual copper wires? A 25 pair B 100 pair C 110 block D 66 block

answer

C 110 block

question

You want to use the T568B standard for adding connectors to your Cat5 cable. Starting with pin 1, which order should you use for the wires within the connector? A White/green, green, white/orange, blue, white/blue, orange, white/brown, brown B White/orange, orange, white/green, blue, white/blue, green, white/brown, brown C White/blue, blue, white/orange, orange, white/green, green, white/brown, brown D White/orange, orange, white/green, green, white/blue, blue, white/brown, brown

answer

B White/orange, orange, white/green, blue, white/blue, green, white/brown, brown

question

You want to use the T568A standard for adding connectors to your Cat5 cable. Starting with pin 1, which order should you use for the wires within the connector? A White/orange, orange, white/green, blue, white/blue, green, white/brown, brown B White/blue, blue, white/orange, orange, white/green, green, white/brown, brown C White/orange, orange, white/green, green, white/blue, blue, white/brown, brown D White/green, green, white/orange, blue, white/blue, orange, white/brown, brown

answer

D White/green, green, white/orange, blue, white/blue, orange, white/brown, brown

question

You are preparing to attach wires in a 110 block. You want to connect the wires and trim off the excess at the same time. Which of the following should you do? (Select two.) A Use a butt set with a jack. B Use a butt set with clips. C Use a punchdown tool with a straight blade. D Use a punchdown tool with a notched blade. E Point the cut side of the tool towards the wire end. F Point the cut side of the tool towards the connected end of the wire.

answer

D Use a punchdown tool with a notched blade. E Point the cut side of the tool towards the wire end.

question

You are working with 25 pair wires and 66 blocks. You have pushed the wires onto the 66 block, but now need to cut off the excess end of each wire. Which tool should you use? A Snips B Punchdown tool C Cable stripper D Butt set

answer

B Punchdown tool

question

Which of the following methods would you use to create a crossover cable? A Use the T568A standard on one connector, and the BLOG convention on the other connector. B Use the T568B standard. C Use the T568B standard on one connector, and the BLOG convention on the other connector. D Use the T568A standard. E Use the T568A standard on one connector, and the T568B standard on the other connector.

answer

E Use the T568A standard on one connector, and the T568B standard on the other connector.

question

You have a network that occupies both floors of a building. The WAN service provider has installed the line for the WAN service into the building in a wiring closet on the main floor. You have a second wiring closet on the second floor directly above the wiring closet that holds the demarc. Which of the following terms describes the closet on the second floor? A IDF B Demarc extension C MDF D Horizontal cross connect E Vertical cross connect

answer

A IDF Intermediate distribution frame (IDF)

question

You are connecting Cat5e cables to a 110 block. In what order should you connect the wires to follow standard wiring convendons? A White/brown, brown, white/blue, blue, white/orange, orange, white/green, green B White/blue, blue, white/orange, orange, white/green, green, white/brown, brown C White/orange, orange, white/green, blue, white/blue, green, white/brown, brown D White/green, green, white/orange, blue, white/blue, orange, white/brown, brown

answer

B White/blue, blue, white/orange, orange, white/green, green, white/brown, brown

question

Which of the following terms identifies the wiring closet in the basement or a ground floor that typically includes the demarcation point? A IDF B Smart jack C Horizontal cross connect D 110 block E MDF

answer

E MDF

question

Which of the following is used to terminate individual wires from a 25 pair or 100 pair cable using female RJ-45 ports? A 66 block B 110 block C Horizontal cross connect D Patch panel

answer

D Patch panel

question

Which pins in an RJ-45 connector are used to transmit data when used on a 100BaseT Ethernet network? (Choose two.) A Pin 1 B Pin 2 C Pin 3 D Pin 4 E Pin 5 F Pin 6 G Pin 7 H Pin 8

answer

A Pin 1 B Pin 2

question

You have a network that occupies all three floors of a building. The WAN service provider has installed the line for the WAN service into the building in a wiring closet on the main floor. You have a wiring closet on the two remaining floors directly above the wiring closet on the main floor. What would you use to connect the wiring closets together? A Smart jack B Demarc extension C Horizontal cross connect D Vertical cross connect

answer

D Vertical cross connect

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