2. 计算机
  3. Refer to the exhibit． Switch1 has just been restarted and has passed the POST routine． Host A sends its initial frame to Host C．

Refer to the exhibit． Switch1 has just been restarted and has passed the POST routine． Host A sends its initial frame to Host C．

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问题 Refer to the exhibit． Switch1 has just been restarted and has passed the POST routine． Host A sends its initial frame to Host C． What is the first thing the switch will do as regards populating the switching table?
选项 A、Switch1 will add 192．168．23．4 to the switching table．
B、Switch1 will add 192．168．23．12 to the switching table．
C、Switch1 will add 000A．8A47．E612 to the switching table．
D、Switch1 will add 000
E、DB95．2EE9 to the switching table．
答案C
解析 交换机重新启动了，这个时候交换机的MAC地址表是空的，当主机A发送数据给主机C而经过交换机时，交换机根据他的工作的原理他要进行原MAC地址学习，而因为对于这个目的MAC地址无记录，而将这个流量从除收到的这个接口外的所有接口泛洪出去。所以在最开始的一步中，交换机是记录下主机A的MAC地址000A．8A47．E612到他的MAC地址表中。
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