Wired and Wireless Local Area Networks (1-32 Answer Key)

MULTIPLE CHOICE The following are possible multiple-choice questions for tests. The question is posed and the answer is provided under the choices. The level of difficulty (easy, medium, and hard) and the page number(s) relevant to the topic is also furnished. 1. A(n) _____________ is not a common type of dedicated server. a. b. c. d. e. file server print server database server collision server web server Answer: d 2. A(n) ____________ allows many users to share the same set of files on a common, shared disk drive. a. b. c. d. e. print server database server file server piconet server remote access server Answer: c 3. Which of the following is not a basic LAN component? a. b. c. d. e. client PAD server network interface card network operating system Answer: b 4. Which of the following is not an advantage of using Cat5 unshielded twisted pair for cabling LANs? a. b. c. d. e. cost (relative to fiber) thickness (relative to coax) weight (relative to coax) flexibility (relative to coax) security (relative to fiber) Answer: e 5. Of the following, which is not true about fiber optic cable? a. b. c. d. e. It is thinner than unshielded twisted pair cable. It is lighter than unshielded twisted pair cable. It has a very low capacity. It is more expensive than CAT5 unshielded twisted pair cable. It is a type of guided media. Answer: c 6. Which of the following is not a purpose for using hubs in a network? a. b. c. d. e. to act as a communications server to connect network cables to prevent attenuation to act as a junction box none of the above Answer: a 7. Which of the following type of media is most commonly used in backbone networks because of its high capacity? a. b. c. d. e. fiber infrared frequencies coax cable unshielded twisted pair shielded twisted pair Answer: a 8. Hubs: a. b. c. d. e. usually incorporate repeaters or amplifiers allow for simultaneous communication for all of the computers connected to them limit the distance of a network to a few meters in length are a difficult method to connect network cables operate at the application layer Answer: a 9. _____________ is the software that controls the network. a. b. c. d. e. Network Operating System Client Operating System Embedded Operating System Network Control System Network Software System Answer: a 10. The server version of the Network Operating System does not: a. provide the software that performs the functions associated with the physical layer. b. provide the software that performs the functions associated with the data link layer. c. provide the software that performs the functions associated with the application layer. d. provide the software that performs the functions associated with the network layer. e. usually provide the software that performs the functions associated with the computer’s own operating system. Answer: a 11. _____________ provide information about resources on the network that are available to the users, such as shared printers, file servers and application software. a. b. c. d. e. Network Services Directory Services Client Services Computing Services Remote Access Services Answer: b 12. A _________ is a group of centrally organized, related resources. a. b. c. d. e. workgroup domain server client sharepoint Answer: b 13. A hierarchical tree of active directory domains within one organization that is linked to other trees in the organization is called a/n ___________. a. b. c. d. e. ADS domain forest tree NDS Answer: c 14. A __________ indicates what resources on each server are available on the network for use by other computers and what people are allowed what access to the network. a. b. c. d. e. user profile user access log network profile network operating system server allocation list Answer: c 15. The cheapest time to install network cabling is: a. b. c. d. during the construction of the building. as soon as the building is completed. as soon as the building is occupied. about five years after the building is occupied so that the exact office locations for each network computer is known. e. any time that a network needs to be installed. Answer: a 16. Ethernet LAN was developed by: a. b. c. d. e. IBM. ARPANET. DEC, Xerox, and Intel. University of Minnesota. CERN laboratory in Geneva. Answer: c 17. ___________ is how the network works conceptually. a. b. c. d. e. Physical topology Logical topology Network topology Ethernet Media access control Answer: b 18. The type of logical topology that hub-based Ethernet uses is a: a. b. c. d. e. ring bus star mesh interconnected Answer: b 19. A logical bus topology: a. is always used by token ring protocol LANs. b. has all computers connected to each other in point-to-point connections. c. is limited to short distances since devices like a hub or repeater cannot be used with this type of topology. d. permits every message to be received by every computer on the bus, even when those messages are intended for other computers. e. has a central control device, such as a mainframe. Answer: d 20. Media access control refers to: a. b. c. d. e. the price of fiber optic cable. security over floppy disks in a user environment. the ability for a user to use multimedia equipment in a LAN. controlling access to a media by more than one computer in a LAN. the control over coax cable installed by a cable service provider. Answer: d 21. Which of the following is not true about CSMA/CD? a. b. c. d. The acronym refers to Carrier Sense Multiple Access with Collision Detection It is used in token ring protocol LANs It is a contention-based media access control technique When a collision has occurred, the computers that wish to transmit wait a random amount of time after a colliding message before attempting to retransmit e. Computers on the circuit ‘listen’ before transmitting Answer: b 22. _________ is not a type of Ethernet specification. a. b. c. d. e. 100Base-T 10GbE 1000Base-T (1GbE) 10Base-T Securenet Answer: e 23. 100Base-T: a. b. c. d. e. supports 100 Mbps data rate is inexpensive runs on twisted pair is more dominant than token ring all of the answers are correct Answer: e 24. 100 Base-T: a. b. c. d. e. can run at either full- or half-duplex is one of the oldest forms of Ethernet is one of the slowest forms of Ethernet can only be used over coaxial cables has only one version, 100Base-SLCX Answer: a 25. ________ is a hybrid version of Ethernet that uses either 10Base-T, 100Base-T, or 1000Base-T. a. b. c. d. e. Mullion Ethernet Base-T Ethernet 10/100/1000 Ethernet Token ring Ethernet FDDI Ethernet Answer: c 26. Switch-based Ethernet: a. b. c. d. e. uses a hub to connect computers has a physical topology of a ring has a logical topology of a ring has a logical topology of a bus usually enables all attached circuits to send or receive packets simultaneously Answer: e 27. A switch uses a _____________ that is very similar to a routing table used in a router. a. b. c. d. e. cable plan forwarding table network server reversing table switching mullion Answer: b 28. Which of the following is not true about layer-2 switched Ethernet? a. A switch replaces the hub. b. The physical topology is the same as the physical topology of shared Ethernet: a ring. c. The logical topology is a star. d. The switch uses a forwarding table to switch the frame to the correct circuit/computer. e. The switch chooses which frame to transmit first if it receives more than one frame destined for the same computer at the same time, and stores the other frame(s) temporarily. Answer: b 29. Which of the following is not true about switched Ethernet? a. b. c. d. e. The switch has a physical bus topology. It uses a switch instead of a hub. Most switches support full duplex circuits. It essentially provides a point-to-point connection between computers. It has forwarding tables in which entries are learned over time. Answer: a 30. Which of the following is a mode in which a switch reads in the first 64 bytes of the Ethernet frame and then begins forwarding out the frame on an outgoing port? a. b. c. d. e. fast learning switching routing switching fragment-free switching store switching cut switching Answer: c 31. Each of the full duplex circuits connected to a switch is a separate _______________ circuit connecting the switch to a device on the network. a. b. c. d. e. multipoint point-to-point shared ring star Answer: b 32. Wired Ethernet is becoming a _______________ technology for small SOHO devices, meaning that manufacturers are no longer creating new products. . a. b. c. d. e. host legacy caching hub peak Answer: b