• [多选题]As the Ezonexam network administrator, you are required to have a firm understanding of the OSI model. Why does the data communication industry use the layered OSI reference model? (Choose two)
  • 正确答案 :BC
  • It encourages industry standardization by defining what functions occur at each layer of the model

    It divides the network communication process into smaller and simpler components; thus aiding component development, design and troubleshooting

  • 解析:解析:Explanation:

  • [单选题]VLAN主干协议VTP的默认工作模式是()
  • 正确答案 :A
  • 服务器模式


  • [多选题]Which of the following are types of flow control? (Choose three)
  • 正确答案 :ACD
  • Buffering

    Windowing

    Congestion avoidance

  • 解析:解析:Explanation:Datatransmissionflowcontroloccursatlayer4withthehelpofbuffering,windowingandcongestionavoidance.

  • [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:

  • [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]两个VLAN之间要想通信,应该使用的设备是()
  • 正确答案 :C
  • 路由器


  • [多选题]请选出交换机处理帧的三种模式:()
  • 正确答案 :ABE
  • 直通模式

    存储转发模式

    阻塞模式

  • 解析:ABE

  • [单选题]SMTP工作在OSI哪一层()
  • 正确答案 :D
  • 应用层


  • [单选题]关于帧中继的说法,正确的是()
  • 正确答案 :C
  • 可以偷占带宽


  • [多选题]Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet? (Select two answer choices.)
  • 正确答案 :BD
  • Half-duplex Ethernet uses a loopback circuit to detect collisions.

    Full-duplex Ethernet makes use of two pairs of wires for data.

  • 解析:解析:Explanation:

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