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  • 思科认证考试(CCNA)考试模拟题20—39及答案(1)

    试题作者:佚名    试题来源:不详    试题栏目:思科认证试题    收藏本页
    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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