Guide to Networking Essentials Ch 1-13 – Flashcards
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For any device to communicate with the computer, either through input or output, it must have what special software installed?
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device driver
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The XYZ company has two offices, one downtown, and a brand new office in the newer section of town. To connect the two offices, they will need a dedicated line, probably leased from the local phone company. What type of network will they be implementing to connect their two offices?
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MAN
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What is one of the disadvantages of a peer-to-peer network compared to a server-based network?
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limited security
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When data is being prepared for transmission onto the network, it is broken into small pieces and a header and trailer are added to each piece to help identify it. What is this process called?
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encapsulation
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Which component, located on the motherboard, carries out all the instructions provided by computer programs?
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CPU
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Which part of the network communication process is responsible for sending and receiving data to and from the network media?
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NIC driver
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You are building a gaming computer and you want to install a dedicated graphics card that has a fast GPU and 1GB of memory onboard. You need to make sure that you have the right connector available on your motherboard. What type of connector would be appropriate?
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PCI-Express
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You have just started a new business. You need to have three to four workstations available for your employees who simply need to share some files and a printer, but you don't have a large budget. Security is not a major concern, but costs are. What type of network would be the most appropriate for your situation?
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peer-to-peer network
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increase the processing power, you need a CPU that provides more than one processor. What is this CPU called?
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multicore
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You're the network administrator for a company located in Arizona that has just opened an office in Texas. You need to make sure that the two locations can communicate. What type of network are you implementing?
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WAN
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In a physical bus topology, both ends of the medium must be terminated in order to prevent what?
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signal bounce
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What does the frame trailer consist of in an Ethernet frame?
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cyclic redundancy check
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What is the IEEE standard governing wireless networking?
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802.11
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What is the main advantage of a point-to-point topology?
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data travels on a dedicated link
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What is the media access method used by Ethernet?
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CSMA/CD
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What type of logical topology is at work when using an Ethernet hub?
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logical bus
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When discussing Ethernet standards, what does the XBaseY terminology refer to?
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the transmission speed, the type of transmissions, and the length or type of cabling
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When using UTP cabling, what is the maximum cable length that can be used from the NIC to a hub or switch?
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100 meters
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Which of the following is NOT a characteristic of Unshielded Twisted Pair cabling?
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operates in half-duplex only
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Which of the following is NOT an advantage of a physical star?
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provides redundancy and fault tolerance
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A signal has just been received from the WAN link on your network. Using the given components, which of the following shows the path that the signal would take from the WAN to a workstation on your network? Assume all components are used at least once and that some components may be used more than once. 1—backbone cabling 2—entrance facility 3—equipment room 4—horizontal wiring 5—telecommunications closet 6—work area
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2, 1, 3, 1, 5, 4, 6
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Terrestrial and satellite systems are two types of which wireless networking technology?
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microwave
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What are all of the connections in a network considered, including the cables and their connectors?
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cable plant
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What is a disadvantage of using fiber-optic cabling?
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difficult to install
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What is the term used that defines network cabling in the work area and between telecommunications closets and equipment rooms?
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structured cabling
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What type of wiring should be used for a high-speed connection between two buildings?
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fiber-optic cabling
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When a signal travels across network medium, it signal loses strength the further it gets from the transmitting station, to the point where the receiving station can no longer interpret the signals correctly. What is the term for this phenomenon?
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attenuation
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Which of the following connections might require a crossover cable?
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switch to switch
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Which of the following is a length of cable that connects a computer to either a networking device or to an RJ-45 jack?
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patch cable
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Which of the following is not a form of electromagnetic interference, or EMI?
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rain/fog
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How many bits are available in an IPv6 network for creating subnets when the prefix is /48 and the host ID is 64 bits?
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16
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In what layer does the NIC operate?
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Network Access
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In which layer does a router operate?
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Internetwork
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The last 64 bits of an IPv6 address are the interface identifier. Where is that number derived from?
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the MAC address
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The Transport layer deals with which unit of information?
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segment
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What is the binary number system based on?
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powers of 2
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What is the decimal equivalent to the binary number 11000001?
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193
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Which of the following is not a function of the Network Access layer?
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delivers packets efficiently
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Which part of a computer's IP address configuration indicates the portion of the address that specifies the network ID?
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subnet mask
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You are the network administrator for a company that uses a private addressing scheme for its internal network. You have 300 workstations that regularly access the Internet. What process must be in operation on your network to allow all the workstations to have access to the Internet using only one public IP address?
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PAT
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At each layer of the OSI model, data is appended to the original message and then sent on to the next lower layer. What is this process called?
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encapsulation
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At what layer do NICs operate?
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Data Link
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The Transport layer segments data into smaller chunks, the size of which is determined by which of the following?
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MTU
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What information would you find in the header of a Transport layer PDU?
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window size
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What layer is responsible for making sure that the data that it sends and receives is in a format that the receiving and sending computers can understand?
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6
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Which is the IEEE standard that sets the standards for wireless networking?
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802.11
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Which layer is responsible for determining the best path a packet should travel across an internetwork?
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Network
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Which layer is responsible for establishing a connection between the source and destination?
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Session
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Which layer of the OSI model is responsible for encryption and decryption?
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Presentation
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You are working at the help desk and you get a message that a user cannot access the Internet. You open a command prompt, ping the workstation's IP address, and get a response. You ask the user to try the Internet again. He does so with the same result— no connection. Which type of device is most likely to be the problem?
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Network layer device
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Besides a managed switch, what is a high-end switch that offers features such as multicast processing and port security called?
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smart
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Each interface on a router must have an IP address and what else to be able to communicate on the network?
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MAC address
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he time it takes for all the routing tables on every router in a network to be fully updated, either when a change occurs or according to a schedule, is called the speed of what?
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convergence
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What type of hacker uses a scanning device to find unsecured wireless networks and break into those networks?
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wardriver
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When an access control list is applied on a router's interface, that interface is performing a specific function on the packets that it receives. What is that function called?
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packet filtering
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Which is the PCI bus type that has the highest possible transfer rate?
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PCIe
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Which of the following combinations will you find in a switching table?
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MAC address/switch port number
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Which of the following is not a function that would be found in a managed switch?
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the ability to transfer it's switching table with neighboring switches
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Which of the following is the fastest switching mode?
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cut-through
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Which of the following is the switching protocol that is used to eliminate the possibility of switching loops?
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STP
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In Windows, you use Task Manager to view the processes running on your computer. What do you use to view the running processes on some Linux systems?
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system monitor
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Older OSs first used what type of multitasking, which allowed a process to monopolize the CPU's time until the process had completed its own task?
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cooperative
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What directory service protocol used in Linux systems is also supported by Windows?
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LDAP
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What is a partial copy of a VM that is used to restore it to a previous state?
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snapshot
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What is the native file-sharing protocol in Linux?
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NFS
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What method does the CPU use to divide its computing cycles between more than one process?
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time slicing
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Which common e-mail protocol allows the user to access messages, yet still have them stored on the server?
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IMAP
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Which edition of Windows Server 2008 includes support for up to 64 processors and provides unlimited virtual instances?
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Datacenter Edition
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Which of the following virtualization products provides hosted virtualization?
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VMware Workstation
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You are testing out a new DHCP server and want to make sure that it does not interfere with your current network. What option would you use to configure your network adapter using VMware workstation?
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host-only
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A MAC address is composed of two 24-bit numbers. What does the first 24-bit number represent?
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It's the organizationally unique identifier for the manufacturer of the device.
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A wireless router is actually composed of three devices, a wireless access point and which two other devices?
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a router and a switch
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At which layer would you find errors that were caused by EMI?
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Physical
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Every NIC is embedded with a unique address that consists of a 12-digit hexadecimal value. What is this address called?
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MAC address
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How does a switch "learn" MAC addresses?
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The switch reads each frame and makes a note of where each MAC address came from.
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How many bits are in an IPv6 address?
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128
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In wireless networks, what type of media access control is used?
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CSMA/CA
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Just as a switch keeps records of MAC addresses that it has learned, so does your computer. What protocol does your computer use to learn MAC addresses?
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ARP
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TCP establishes a connection with the destination device using which process?
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three-way handshake
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What command would you issue from the command prompt to test whether your computer has connectivity to the network?
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ping IPaddress
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What does it usually mean when the activity light on a switch is blinking?
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It is communicating with the network.
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What is one of the disadvantages of a server-based network compared to a peer-to-peer network?
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additional costs
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What is the best way to eliminate the possibility of collisions in a network?
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Only use switches. Use NICs that operate in full-duplex mode. (Both are correct)
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What is the IEEE standard that governs all forms of Ethernet media?
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802.3
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What is the main disadvantage of cable modem networking?
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It uses a bus topology.
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What is the maximum cable length for both category 5e and category 6 UTP cable?
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100 m
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What is the most common topology and technology combination in use today?
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switched / Ethernet
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What is the way in which bit signals are represented on the network medium?
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encoding
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What was the primary reason to create a network?
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share resources, communicate with e-mail, share information
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When a frame is received, which component reads the source and destination MAC addresses, looks up the destination to determine where to send the frame, and forwards it out the correct port?
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switch
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When referring to network bandwidth, what is the basic unit of measurement?
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bits per second
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Which layer has been subdivided into the Logical Link Control sublayer and the Media Access Control sublayer?
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Data Link
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Which layer is responsible for the encoding of signals?
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1
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Which of the following is NOT a component of an Ethernet frame header?
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4-byte frame check sequence
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Which of the following is not a true statement regarding the function of a switch?
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It determines the path used based on the destination IP address.
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Why is the use of a switch preferred over a hub?
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Devices on a hub have to share the available bandwidth; switches are intelligent - they read the frame and determine where to send it; switches can operate in full-duplex mode.
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You are the network administrator for a company and you want to separate the traffic from the accounting department from the rest of the network. However, the accounting department still needs to have access to other network resources. What type of network do you need to implement?
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internetwork
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In Windows, you use Task Manager to view the processes running on your computer. What do you use to view the running processes on some Linux systems?
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system monitor
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Older OSs first used what type of multitasking, which allowed a process to monopolize the CPU's time until the process had completed its own task?
answer
cooperative
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What directory service protocol used in Linux systems is also supported by Windows?
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LDAP
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What is a partial copy of a VM that is used to restore it to a previous state?
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snapshot
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What is the native file-sharing protocol in Linux?
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NFS
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What method does the CPU use to divide its computing cycles between more than one process?
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time slicing
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Which common e-mail protocol allows the user to access messages, yet still have them stored on the server?
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IMAP
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Which edition of Windows Server 2008 includes support for up to 64 processors and provides unlimited virtual instances?
answer
Datacenter Edition
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Which of the following virtualization products provides hosted virtualization?
answer
VMware Workstation
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You are testing out a new DHCP server and want to make sure that it does not interfere with your current network. What option would you use to configure your network adapter using VMware workstation?
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host-only
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A disk must be formatted as what type of disk if you want to access additional features such as disk spanning?
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dynamic
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A user logs on to her account and is able to makes changes to her desktop, like adding a background and screen saver. However, when she logs off and logs back on, the desktop reverts to its original configuration. What type of user profile does this user have?
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mandatory
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How many disks are needed to implement a RAID 1 + 0?
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4
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In Linux, what is the command for viewing a file's contents onscreen?
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cat
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The partition that contains the Windows OS files is known as the what type of partition?
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boot
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What level of RAID does not provide fault tolerance?
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RAID 0
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When a file is encrypted, what color does the file name appear in Windows Explorer?
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green
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Where are the waiting print jobs stored until they can be sent to the print device?
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print queue
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Which of the following is NOT a Linux file system?
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Whichever is NOT Ext3, Ext4 or ReiserFS
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You are creating a new group for the Sales department. All of the users that will be in this group will need to have access to the same resources. What scope would you use for this group?
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global
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The 802.11i standard is the newest version of wireless security that uses more advanced encryption methods than the previous versions. What is it more commonly referred to as?
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WPA2
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The ultimate goal of network security is to protect which of the following?
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the customers who use the system, the organization and its employees, business partners who access the network
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What is a policy that defines the methods involved when a user logs on to the network called?
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authentication
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What process, available on most routers, will help improve security by masking the internal IP address of the transmitting device?
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NAT
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When using BitLocker to encrypt your entire disk, which mode must you use if your system is not configured for TPM support?
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USB key mode
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Which of the following is a scanner used as a tool to determine what possible points of entry exist that are open and vulnerable on your system?
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Port
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Which of the following is a type of denial-of-service attack that involves flooding the network with broadcast messages that contain a spoofed source address of an intended victim?
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smurf attack
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Which of the following is a type of malware that isn't self-replicating and is usually installed by the user without his knowledge. It's primary goal is to invade your privacy by monitoring your system and reporting your activities to advertisers and spammers.
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spyware
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Which one of the following passwords meets Windows password complexity requirement?
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N3tworking1O1
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Which protocol is used to encrypt data as it travels a network?
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IPSec
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After you have set up a network for a small business, you may need to access the network remotely to provide support for the users. Which remote access option should not be used unless a secure connection can be established first?
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Telnet
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Before you purchase any software for a small business, especially the OS, you should be aware of the number of users that are allowed to access the software. What document will give you that information?
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EULA
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If you want to implement fault-tolerance on your network, what type of RAID would you use on the drives that contain data?
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5
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If you want to implement fault-tolerance on your network, what type of RAID would you use on the drives that contain the OS and applications?
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1
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If your network consists mostly of computers with Linux operating systems, which file-sharing system can you use that is native to Linux?
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NFS
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What is CRM software?
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software that is used to keep track of customer information, including contact information and appointments
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Which of the following is a new file-sharing option that can be used on the network if all the computers have Windows 7 installed?
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HomeGroup
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Which of the following is not a requirement for most small business networks?
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complex WAN environment
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Which of the following is not included in any edition of Windows Small Business Server?
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support for up to 500 users
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You have been contracted to set up a network for a small business. The company currently has 100 users, and they are looking to expand. They want to use Microsoft Exchange Server for their e-mail and shared calendar feature What version of Windows Server would you suggest that they purchase?
answer
Windows Essential Business Server
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Although a frame relay connection is established in much the same way that a T1 connection is, which of the following is an important distinction between the two technologies?
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T1 uses point to point, while frame relay makes use of virtual circuits.
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Part of SONET's flexibility comes from its ability to be arranged in several different physical topologies. Which of the following is NOT a possible SONET topology?
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fault tolerant bus
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Select the true statement regarding analog and digital signals.
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* a) Analog signals vary over time continually and can be represented by a sine wave, while digital signals are binary 1s and 0s using voltage levels. * b) Digital signals vary over time continually and can be represented by a sine wave, while analog signals are binary 1s and 0s using voltage levels c) A modem is not required to use a line that uses analog signals. d) On fiber optic media, a 1 bit can be represented as a pulsing analog signal.
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The company you work for currently has ISDN service in place. Your supervisor wishes to know what sort of ISDN service is being used so that better alternatives can be considered. He tells you that the service has two B-Channels and a D-Channel. What ISDN format do you have?
answer
Basic Rate Interface (BRI)
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What is the local loop, or last mile?
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the connection between the demarcation point and the CO
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When would you most likely NOT choose to use a leased line connection?
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when a nondedicated link is needed for backups
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Which of the following terms describes the category of cloud computing in which a customer develops applications using development tools and infrastructure provided by the service provider?
answer
hosted platforms
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Which one of the following is NOT a typical SONET data rate?
answer
OC-9001
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Which statement about Multiprotocol Label Switching (MPLS) is true?
answer
MPLS works with any network layer protocol.
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You have been asked to install a VPN remote access solution using Windows Server.What do you need to install?
answer
Routing and Remote Access Service (RRAS)
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Following a massive infection of your network by a virus, you have been tasked with developing preventive measures for keeping the network infection free. What would be an effective preventive measure?
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Select the utility inside of Windows that allows the user to recover a previous system state. This utility monitors drives and partitions, as well as registry settings and system files.
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Traceroute would be best suited for which of the following tasks?
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locating bottlenecks in a network
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What does the ping message "Destination host unreachable" message mean?
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The pinged IP address is on the same network, but an ARP reply was not received.
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What kind of software would you use to view and troubleshoot protocol specific problems such as TCP retries caused by missed acknowledgements, or duplicate acknowledgements that cause network slow-down?
answer
protocol analyzer
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When using tape backup, what should be done to ensure that the backups are viable?
answer
Verify data can be restored.
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Which command will display the configured IP address, default gateway, and DNS servers for a Windows workstation?
answer
ipconfig /all
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You are currently troubleshooting a network issue with your ISP's customer support agent. The agent requests that you open up command prompt and type "ping 127.0.0.1". What does this accomplish?
answer
tests that the local IP stack is functioning
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You have just connected a brand new workstation to your local network. As per company policy, you have used a static IP configuration. However, all attempts to reach the Internet from the workstation fail. You have verified that you can communicate with servers and other workstations on the local network, and that you are the only one having an issue reaching the Internet. What is most likely the issue?
answer
incorrectly configured gateway address
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Your current backup schedule involves differential backups of all data Monday through Saturday, with a full backup on Sunday. Last Saturday, one of your storage drives failed prior to running the daily backup. What must be done to recover the data on the failed drive?
answer
The last full backup should be restored first, followed by the last successful differential backup prior to the drive failure.
