• [单选题]路由器上的命令“show version”的功能是()
  • 正确答案 :A
  • 显示版本信息


  • [单选题]PPP工作在OSI的哪一层()
  • 正确答案 :B
  • 数据链路层


  • [单选题]介质100BaseT的最大传输距离是:()
  • 正确答案 :B
  • 100m


  • [单选题]路由器上,命令“show int s0”的显示结果为:Serial0 is up,line protocol is down出现该结果的可能原因是()
  • 正确答案 :C
  • 两端设备协议不一致


  • [单选题]配置路由器时,封装PPP协议的命令是:()
  • 正确答案 :A
  • encap ppp


  • [单选题]A Ezonexam technician is troubleshooting connectivity problems between two routers that are directly connected through the serial line. The technician notices that the serial line is up but cannot see any neighbors displayed in the output of the show cdp neighbors command.In which OSI layer is the problem most likely occurring?
  • 正确答案 :B
  • Data link

  • 解析:解析:Explanation:Asthequestionstatesthatseriallineisup,itmeanstheproblemisnotontheNetworklayer.Theadministratorcannotseeanyoutputbyissuingtheshowcdpneighborscommand.ItmeansthatCDPisdisabledandCDPisaprotocolthatrunsoverLayer2(thedatalinklayer)onallCiscorouters,bridges,accessservers,andswitches.

  • [单选题]标准访问控制列表的数字标识范围是()。
  • 正确答案 :B
  • 1-99


  • [单选题]工作在OSI第三层的设备是:()
  • 正确答案 :B
  • 路由器


  • [单选题]You are given a PC, a router, and a cable. Select the correct combination that will allow you to log into router VE1 locally using a terminal emulation program such as HyperTerminal.
  • 正确答案 :B
  • Connect the PC's COM port to the router's console port using a rollover cable.

  • 解析:B 解析:Explanation:

  • [单选题]RIP路由协议认为“网络不可到达”的跳数是:()
  • 正确答案 :B
  • 16


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