Which sequence of messages demonstrates the communications between the LAC and LNS when theyestablish an L2TP session?()A.Incoming Call Reply, Incoming Call Request, Incoming Call ConnectedB.Incoming Call Reply, Incoming Call Connected, Incoming Call Requ

题目
Which sequence of messages demonstrates the communications between the LAC and LNS when theyestablish an L2TP session?()

A.Incoming Call Reply, Incoming Call Request, Incoming Call Connected

B.Incoming Call Reply, Incoming Call Connected, Incoming Call Request

C.Incoming Call Request, Incoming Call Reply, Incoming Call Connected

D.Incoming Call Request, Incoming Call Connected, Incoming Call Reply


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更多“Which sequence of messages demonstrates the communications between the LAC and LNS when theyestablish an L2TP session?() ”相关问题
  • 第1题:

    在一个LNS和LAC对之间存在着哪两种类型的连接()

    A.隧道(tunnel)连接

    B.L2TP连接

    C.HDLC连接

    D.会话(session)连接


    参考答案:A, D

  • 第2题:

    关于一次认证l2tp和二次认证l2tp的描述,正确的是:()。

    A.一次认证l2tp只在LAC认证

    B.一次认证l2tp只在LNS认证

    C.二次认证l2tp在LAC和LNS都进行认证

    D.二次认证l2tp可以不在LAC端认证


    参考答案:B, C

  • 第3题:

    L2TP工作过程中LNS和LAC之间存在验证信息的传递。

    A.错误

    B.正确


    参考答案:B

  • 第4题:

    在L2TP隧道建立过程中,需要在LAC和LNS间交互报文,下列不属于隧道建立过程中交互的报文有()

    A.SCCRQ

    B.ICRQ

    C.SCCCN

    D.Hello

    E.CDN


    参考答案:B, D, E

  • 第5题:

    L2TP协议支持备份LNS。

    A.错误

    B.正确


    参考答案:B

  • 第6题:

    The beautiful mountain village__________ we spent our holiday last year is locatedin __________ is now part of Guangxi.

    A.which ; where
    B.where; what
    C.that ; what
    D.when ; which

    答案:B
    解析:
    where在此充当地点状语,what既充当located in的宾语又充当is的主语,本题考查定语从句和名词性从句。mountain village在定语从句we spent our holiday last year作地点状语,故用关系副词where:第二个考查宾语从句,从句中缺少主语,故用what作主语。故选B。