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| 作者：不明 来源：www.pccode.net 整理 发布时间：2007-1-24 15:24:45 发布人：wongrs | |||
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Questions 20. [TxNx] If Host A sends a packet to Host B over token ring, and Host B is not active: a) The packet will time out. b) The packet will be removed by Host A. c) The NVRAM of Host B will remove the packet. d) The packet will "die" when it reaches the terminator. e) The packet will be removed by the token monitor. 21. [TxNx] If Host A sends a packet to Host B over token ring: Host A dies after transmitting, and Host B is not active: a) The packet will time out. b) The packet will be removed by Host A. c) The NVRAM of Host B will remove the packet. d) The packet will "die" when it reaches the terminator. e) The packet will be removed by the Active monitor. 22. [FxNx] BECN and FECN are: a) Used to provide keepalives in a Frame Relay environment b) Used to provide error checking in a Frame Relay environment c) Used to provide congestion information in a Frame Relay environment d) Used to provide flow control parameters in a Frame Relay environment e) BECN and FECN are not used in a Frame Relay environment. 23. [RxNx] Which of the following are benefits of a Link-State routing protocol? (Choose all that apply.) a) Allows the use of a more robust addressing scheme. b) Allows for a larger scalable network c) Reduces convergence time d) Allows "supernetting" e) All of the above. 24. [OxNx] Which of the following are reasons for the OSI model? a) Standardizes interfaces b) Allows modular engineering c) Facilitates learning and teaching d) All of the above. 25. [RxNx] Which of the following is NOT a ROUTING protocol: a) OSPF b) RIP c) IPX d) EIGRP e) NLSP 26. [RxNx] Which statement is NOT true about link state protocols: a) Link state advertisements are sent to all routers in an area. b) Each router executes the SPF algorithm. c) Link state routers keep a topological database of the network. d) Link state routers include the originating router s routing table. e) Link state routers know of possible alternate paths to a particular network. 27. [RxNx] Which of the following would NOT appear in a routing table? a) Next hop address b) Interface Port references c) MAC address d) Network address e) Metrics 28. [OxNx] Which statement is true of the Datalink OSI layer ? a) 802.3 is the MAC sub layer.
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