• [单选题]为了连接“帧中继”线路,网络中的路由器需要提供的端口类型为()
  • 正确答案 :B
  • Serial


  • [单选题]对路由器的描述,正确的是()
  • 正确答案 :C
  • 多广播域,单冲突域的设备


  • [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


  • [单选题]路由器上,清空路由表的命令是()
  • 正确答案 :D
  • clearip route*


  • [单选题]查看路由表的命令是:()
  • 正确答案 :C
  • show ip route


  • [单选题]Which one of the following characteristics is true regarding the use of hubs and switches?
  • 正确答案 :E
  • Switches increase the number of collision domains in the network.

  • 解析:解析:Explanation:Switchesincreasesthenumberofcollisionsdomainsinthenetwork.SwitchesthatareconfiguredwithVLANswillreducethesizeofthecollisiondomainsbyincreasingthenumberofcollisiondomainsinanetwork,butmakingthemsmallerthanthatofonebig,flatnetwork.IncorrectAnswers:A.SwitchesarecapableofVLANconfigurations,buthubsarenot.B.Hubsaregenerallytheleastcostlymethodpossibletoconnectmultipledevicestogetherinanetwork.C.Switchesforwardbroadcastsandmulticasts,bydefault,toallportswithinthesameVLAN.Onlyroutersblockallbroadcasttrafficbydefault.D.Switchesandhubscanbeequallyefficientinprocessingframes,intheory.Inpractice,switchesaregenerallymoreefficientastheyusuallyhavemoreCPUandmemoryallocatedtothem,andaregenerallymuchmoreexpensivethanasimplehub.

  • [单选题]关于PPP和HDLC的说法中,错误的是()
  • 正确答案 :D
  • 在配置ISDN时,广域网协议不能封装成PPP,但可以封装成HDLC


  • [单选题]通过路由器的“配置端口console”对路由器进行配置,应该使用的线缆为()
  • 正确答案 :C
  • 反转线缆


  • [单选题]An administrator issues the show ip interface s0/0 command and the output displays that interface Serial0/0 is up, line protocol is up.What does "line protocol is up" specifically indicate about the interface?
  • 正确答案 :C
  • Keepalives are being received on the interface.

  • 解析:解析:Explanation:

  • [多选题]下列哪一设备工作时,要用到OSI的七个层(一层到七层)()
  • 正确答案 :ABC
  • PC

    网管机

    WEB服务器

  • 解析:ABC

  • 查看原题

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