• [多选题]In which Spanning-Tree states does a switch port learn MAC addresses? (Select two)
  • 正确答案 :CD
  • Forwarding

    Learning

  • 解析:解析:Explanation:

  • [单选题]把访问权限表应用到路由器端口的命令是:()
  • 正确答案 :B
  • ip access-group 101 out


  • [单选题]During the boot sequence, a Ezonexam 2800 series router needs to locate and load an operating system. What is the default order the router uses to find an operating system?
  • 正确答案 :B
  • Flash, TFTP server, ROM

  • 解析:解析:Explanation:BootinguptheRouter:CiscorouterscanbootCiscoIOSsoftwarefromtheselocations:1.Flashmemory2.TFTPserver3.ROM(notfullCiscoIOS)Multiplesourceoptionsprovideflexibilityandfallbackalternatives.

  • [单选题]下列路由协议中,属于链路状态路由协议的是()
  • 正确答案 :D
  • OSPF


  • [单选题]OSI七层模型中,数据链路层的数据封装名称为()
  • 正确答案 :B

  • [单选题]A Ezonexam PC has the IP address 172.16.209.10 /22. What is the subnet of this address?
  • 正确答案 :C
  • 172.16.208.0

  • 解析:解析:Explanation:

  • [单选题]IP地址为:192.168.50.70,掩码为:255.255.255.248,则该IP和掩码结合,共划分了多少个子网(不包括全0子网和全1子网)()
  • 正确答案 :B
  • 30


  • [单选题]路由器上激活端口的命令是()
  • 正确答案 :B
  • no shutdown


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


  • [多选题]Why is full-duplex Ethernet superior to its single-duplex counterpart? (Select two answer choices.)
  • 正确答案 :BD
  • It operates without collisions

    It provides faster data transfer

  • 解析:解析:Explanation:

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