• [单选题]After connecting a PC to an available port on a switch, you find that the PC can not access any of the resources on the LAN. No other PC's connected to the switch appear to be having any issues. What is the most likely cause for this problem?
  • 正确答案 :B
  • The host switch port is assigned to the incorrect VLAN

  • 解析:解析:Explanation:VirtualLANsbreakupbroadcastdomainsinalayer-twoswitchedinternetwork.IfahostisinadifferentVLANthenthenetworkservicesitneedstouse,thepacketsmustgothrougharouter.Ifroutingdoesnottakeplace,thePCwillbeunabletocommunicatewithanyotherdevicesnotinthesameVLAN.AnswerBisthebestanswerforthisquestion.IncorrectAnswers:A.ThePCisunabletocommunicatewithotherLANusers.Norouterneedstoevenbeinstalledforthistowork.C,E.TheMACaddressofthePCdoesnotneedtobeenteredmanuallyintotheswitch.TheswitchwilldynamicallylearnoftheMACaddressofthePC.D.TheSTPalgorithmdoesnotneedtohaveanyendhostinformationaddedinorderforittowork.

  • [单选题]The Ezonexam network administrator has just issued the "switchport trunk native vlan 998" command on switch VE2. What is the function of this command?
  • 正确答案 :B
  • It designates VLAN 998 for untagged traffic


  • [多选题]With regard to Ethernet media access methods, which of the following are true?(Choose all that apply.)
  • 正确答案 :BC
  • A device listens and waits until the media is not busy before transmitting.

    All devices on an Ethernet segment see data that passes on the network medium.

  • 解析:解析:Explanation:

  • [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]对于路由表,下列说法中正确的是:()
  • 正确答案 :B
  • 在缺省的情况下,如果一台路由器同时运行了RIP和OSPF两种动态路由协议,则在路由表中只会显示OSPF发现的路由,因为OSPF协议的优先级更高


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