Testout Chapter 7 – Flashcards with Answers
Unlock all answers in this set
Unlock answersquestion
What information does the next hop entry in a routing table identify?
answer
The first router in the path to the destination network.
question
A router is connected to a network 192.169.1.0/24 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 the 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 network 0.0.0.0
question
A router is connected to a 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 on 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
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
Which two of the following tasks do routers perform?
answer
- Maintain information about paths through an internetwork. - Route data based on logical network addresses
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)?
answer
OSPF
question
Which of the following protocols is classified as a balanced hybrid routing protocol?
answer
EIGRP
question
Which of the following routing protocols are classified as a link state routing protocols?
answer
- IS-IS - OSPF
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
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 RIP2?
answer
RIP uses classful protocol, while RIP2 is classless protocol
question
Under which of the following circumstances might you implement BGP 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 best describes OSPF?
answer
OSPF is a classless link-state routing protocol
question
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?
answer
IGP
question
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
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 effect possible.
answer
Wait for convergence to take place
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
When multiple routes to a destination exist, what is used to select the best possible route?
answer
Metric
question
Which of the following routing protocols uses paths, rules, and policies instead of a metric for making routing decisions?
answer
BGP
question
Which if the following are true for the IS-IS routing protocol?
answer
- Divides large networks into areas - Supports IPv6 routing
question
Your computer has an IP address of 161.13.5.15. Your computer is on a
answer
Public Network
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
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 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? (Three answers)
answer
10.0.12.15 192.168.12.253 172.18.188.67
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 it's 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?
answer
Private addresses are not accessible through the internet
question
Which of the following associates a port number with a host on a private network?
answer
PAT
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?
answer
Static NAT
question
You are the network administrator for a small company that implements NAT to access the Internet. However, you recently acquired 5 servers that must be accessible from outside your network. Your ISP has provided you with 5 additional registered IP addresses to support these new servers but you don't want the public access these servers directly. You want to place these servers behind your firewall on the inside network yet still allow them to be accessible to the public from the outside. Which method of NAT translation should you implement for these 5 servers?
answer
Static
question
You want to connect your small company network to the Internet. Your ISP provides you with a single IP address that is to be shared between all hosts on your private network. You do not want external hosts to be able to initiate connection to internal hosts. What type of NAT should you implement?
answer
Dynamic
question
Which of the following techniques allows incoming traffic addressed to a specific port to move through a NAT router and be forwarded to a specific host?
answer
Port Forwarding
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 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 the network. What should you do?
answer
Use a router to configure a subnet for the accounting computers.
question
What is the primary purpose of gateway redundancy?
answer
To overcome a single point of failure on the next hop router
question
Which of the following protocols provide gateway redundancy?
answer
- VRRP - HSRP - GLBP
question
Which process reduces the size of the routing table by advertising a single route as the destination for a group of contiguous subnets?
answer
Route summarization
question
IGRP
answer
100
question
RIP
answer
120
question
Static Route
answer
1
question
EIGRP Internal Route
answer
90
question
OSPF
answer
110
question
EIGRP Summary Route
answer
5
question
EIGRP External Route
answer
170
question
Which of the following routing protocols uses related link cost as the metric?
answer
OSPF
question
Your company has decided to temporarily partner with a third party organization for an upcoming project. This requires your company's network and the third-party's network to be connected via dedicated WAN connection. As you prepare for the connection, you encounter a problem. The two networks need to be able to exchange routing information, but they use different routing protocols. The third-party organization use RIP, and your network uses OSPF.
answer
Configure a border router to use route redistribution
question
One method of preventing routing loops is to not send information about a route back to the router from which the information came. What is this technique called?
answer
Split horizon
question
Click View Lab and use tracert command from the IT administrator workstation (named ITAdmin) to answer the following question. Below are the IP addresses of the hops in the path between ITAdmin and the external DNS server on the Internet which has an IP address of 163.128.80.93. Drag the IP address listed on the left, to the hops to the right.
answer
Hop 1: Default gateway for ITAdmin - 192.186.0.5 Hop 2: CorpNet Main Router - 198.28.56.1 Hop 3: Network Security Appliance - 65.86.24.136 Hop 4: ISP Internet Router - 65.86.1.1 Destination: External DNS Server - 163.128.80.93
question
Click the View Lab button and use the tracert command to identify the devices in the path between the IT Admin workstation and a remote computer on the Internet which has an IP address of 216.48.8.6.
answer
How many routers are in the path between ITAdmin and the remote computer? 6 What is the default gateway address for ITAdmin?192.168.0.5 What is the IP address of the lat router int he path between ITAdmin and the remote computer? 73.44.216.14
question
You have configured a remote access server to accept dial-up connections for remote access clients. Remote clients are able to connect successfully and access resources on the remote access server. However, the remote clients are not able to connect to other devices located on the same subnet where the remote access server is located. What action would likely correct the problem?
answer
Enable proxy arp on the LAN connection for the remote access server
question
You are the network administrator of a branch office of your company. The branch office network is part of a WAN that covers most of the United States. The office has two Windows 2000 servers, two UNIX severs, one Windows NT server, 90 Windows 98 clients, 40 Windows 2000 Professional clients, and five Macintosh clients. Users have been complaining that they are unable to access resources over the WAN at the main headquarters. You suspect that one of the routers between your office and the main headquarters is not working properly. What TCP/IP utility can you use to see if a router is not working properly?
answer
tracert
question
Which TCP/IP utility gives you the following output? 2 14 ms ;10 ms 14 ms Loopback0.GWI.SLT1.ALTER.NET [137.39.2.123] 3 14 ms ;10 ms 13 ms 122.at-6-0-0.XR1.SLT4.ALTER.NET [152.63.91.86] 4 ;10 ms 14 ms ;10 ms 0.so-0-1-0.TL1.SLT4.ALTER.NET [152.63.1.210] 5 41 ms 41 ms 41 ms 0.so-7-0-0.TL1.PQR3.ALTER.NET [152.63.32.41] 6 42 ms 41 ms 41 ms 0.so.6-0-0.XL1.SEA1.ALTER.NET [152.63.38.82] 7 41 ms 41 ms 41 ms PQS6-0.GW11.SEA1.ALTER.NET [152.63.107.17]
answer
tracert
question
While troubleshooting a problem on a Linux system, you run a utility that generates the following output: 5 s3232.gw.Seat,someisp.net (63.201.72.9) ms 38.713 ms 39.085 ms
answer
traceroute
question
Which of the following utilities would you use to view the routing table?
answer
route
question
Which of the following commands would display the output shown here? Route Table Interface List Active Routes: Network destination, netmask, gateway, interface, metric
answer
Route Print
question
You have just connected a new computer to your network. The network uses static IP addressing. You find that the computer can communicate with hosts on the same subnet, but not with hosts on a different subnet. No other computers are having a problem. Which of the configuration values would you most likely need to change?
answer
Default Gateway
question
You manage a network with multiple subnets connected to the Internet. A user reports that she can't access the new server used in the accounting department. You check the problem and find out that her computer cannot access any server on the subnet, however the computer does access other computers on other subnets as well as the Internet. Which of the following is most likely the cause of the problem?
answer
Missing route on the default gateway router.
question
You manage a network of multiple subnets connected to the Internet. A user reports that she can't access the Internet. You investigate the problem and find that she can access all hosts on the private network, but no hosts on the Internet. Which of the following is likely the cause of the problem?
answer
Missing default route on a router
question
You have been recently hired to manage a network for a small company. Prior to your arrival, the entire network was migrated from IPv4 to IPv6. Each of the two functional groups within the organization has its own network segment that is separated from the other with a router. All network segments within the organization use a /64 prefix, including the point to point backbone segment that connects the two routers. You are concerned that Neighbor Discovery (ND) issues could occur between the two routers on the backbone segment. Which strategy could you employ to help prevent these issues from occurring?
answer
Use a /127 prefix on the backbone segment
question
You work for a large, multinational organization that has an extensive global network that is interconnected using WAN links and routers. Lately, users in one location have complained that they are unable to access resources stored on a server named FS23 in an South American branch office. To troubleshoot the issue, you have done the following: - Verified that the server is up and running - Verified that the various routers in between the two locations are up and running You suspect that perhaps one of the routers between the two locations may be dropping packets. To test this theory, you enter ping FS23 -f -l -1500 command on your workstation. The ping command returns the following: "Packet needs to be fragmented but DF set" What does this mean?
answer
One of the intermediate routers is an MTU black hole
