• [单选题]下列哪一个通配符掩码与子网172.16.64.0/27的所有主机匹配()。
  • 正确答案 :C
  • 0.0.0.31


  • [单选题]关于静态NAT,下面()说法是正确的。
  • 正确答案 :C
  • 静态NAT将内部地址一对一静态映射到内部全局地址


  • [单选题]路由器的配置文件startup-config存放在()里
  • 正确答案 :D
  • NVRAM


  • [单选题]配置路由器特权用户“加密密码”的命令是:()
  • 正确答案 :C
  • enable secret


  • [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


  • [多选题]在路由器上,可以使用的命令有:()
  • 正确答案 :ABC
  • ping

    show interfaces

    show ip route

  • 解析:ABC

  • [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]路由器当前的模式为“端口模式”,要退回到“特权模式”,应该使用的快捷键为()
  • 正确答案 :B
  • ctrl+z


  • [单选题]When is a switched network that is running the Spanning Tree Protocol considered to be fully converged?
  • 正确答案 :D
  • when every operating switch port is in either the blocking or forwarding state

  • 解析:解析:Explanation:

  • [多选题]What are two results of entering the VESwitch(config)# vtp mode client command on a Catalyst switch in the Ezonexam LAN? (Choose two.)
  • 正确答案 :BC
  • The switch will forward VTP summary advertisements

    The switch will process VTP summary advertisements

  • 解析:解析:Explanation:Servermode:VTPservershavefullcontroloverVLANcreationandmodificationfortheirdomains.AllVTPinformationisadvertisedtootherswitchesinthedomain,whileallreceivedVTPinformationissynchronizedwiththeotherswitches.Bydefault,aswitchisinVTPservermode.NotethateachVTPdomainmusthaveatleastoneserversothatVLANscanbecreated,modified,ordeleted,andVLANinformationcanbepropagated.Clientmode:VTPclientsdonotallowtheadministratortocreate,change,ordeleteanyVLANs.Instead,theylistentoVTPadvertisementsfromotherswitchesandmodifytheirVLANconfigurationsaccordingly.Ineffect,thisisapassivelisteningmode.ReceivedVTPinformationisforwardedouttrunklinkstoneighboringswitchesinthedomain,sotheswitchalsoactsasaVTPrelay.Transparentmode:VTPtransparentswitchesdonotparticipateinVTP.Whileintransparentmode,aswitchdoesnotadvertiseitsownVLANconfiguration,andaswitchdoesnotsynchronizeitsVLANdatabasewithreceivedadvertisements.InVTPversion1,atransparent-modeswitchdoesnotevenrelayVTPinformationitreceivestootherswitches,unlessitsVTPdomainnamesandVTPversionnumbersmatchthoseoftheotherswitches.InVTPversion2,transparentswitchesdoforwardreceivedVTPadvertisementsoutoftheirtrunkports,actingasVTPrelays.ThisoccursregardlessoftheVTPdomainnamesetting.

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