●SDLC was invented by IBM to replace the older Bisynchronous protocol for wide area connections between IBM equipment ．A varietion of the (71) protocol called NRM is essentially the same as SDLC．SDLC is (72) protocol like HDLC , Frame. Relay or X．25．An SD

题目

●SDLC was invented by IBM to replace the older Bisynchronous protocol for wide area connections between IBM equipment ．A varietion of the (71) protocol called NRM is essentially the same as SDLC．SDLC is (72) protocol like HDLC , Frame. Relay or X．25．An SDLC network is made up of (73) that controls all communications , and (74) ．It is capable of (75) operation, but almost all practical applications are strictly half duplex．

(71) A．HDLC

B．Frame. Relay

C．X．25

D．X．21

(72) A．a peer to peer

B．a point-to-point

C．not a peer to peer

D．a peer to peers

(73) A．a primary station

B．one or more primary stations

C．a secondary station

D．one or more secondary stations

(74) A．a primary station

B．one or more primary stations

C．a secondary station

D．one or more secondary stations

(75) A．half duplex

B．full duplex

C．half or full duplex

D．half and full duplex

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更多“●SDLC was invented by IBM to replace the older Bisynchronous protocol for wide area connec ”相关问题

  • 第1题：

    在OSPF协议中,核心的Area为()。

    A.Area0

    B.Area1

    C.Area2

    D.自定义


    答案A

  • 第2题：

    Auserhaschangedtheirpasswordusingthepasswdcommand，andnoticesthatthechangeisonlymadetothelocalnode.Whentheadministratorchangestheuser’spasswordfromthecommandlineusingthepasswdcommandthechangeismadecluster-wide.Whatisthemostlikelycauseofthisproblem？（）

    A.TheuserhasaUIDlessthan200

    B.Theuserhasbeendefinedasanadministrativeuser

    C.Thefile/usr/es/sbin/cluster/clpasswdisnotexecutablebytheuser

    D.Theuserneedsexplicitauthorizationtochangetheirpasswordcluster-wide


    参考答案：D

  • 第3题：

    配置OSPF路由，必须需要具有的网络区域是：

    A．Area0

    B．Area1

    C．Area2

    D．Area3


    Area0

  • 第4题：

    The ability to store knowledge makes computers different form every other machine _______ invented.

    A) ever B) thus

    C) yet D) as

     

     


    A   自从。。。
    自从计算机发明以来，它可以存储知识的能力使它不同于其他的机器

  • 第5题：

    My wife has three brothers, all ( ) than she. ( ) , George, is an officer.
    A. elder…The eldest B. older…The oldest
    C. elder…The eld one D. older…The oldest


    答案：B
    解析：

  • 第6题：

    简述SDLC法五个阶段的任务。


    二

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