思科认证考试（ＣＣＮＡ）考试模拟题２０—３９及答案(1) 免费试题下载-免费试卷下载

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.