2. 计算机
  3. Refer to the exhibit． The two connected ports on the switch are not turning orange or green． What would be the most effective st

Refer to the exhibit． The two connected ports on the switch are not turning orange or green． What would be the most effective st

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问题 Refer to the exhibit． The two connected ports on the switch are not turning orange or green． What would be the most effective steps to troubleshoot this physical layer problem?
选项 A、        Ensure that the Ethernet encapsulations match on the interconnected router and switch ports．
B、        Ensure that cables A and B are straight-through cables．
C、        Ensure cable A is plugged into a trunk port．
D、        Ensure the switch has power．
E、        Reseat all cables．
答案B,D,E
解析 考点：考查交换机端口颜色的定义。绿色正常，橘黄色有故障。
A：确认以太网封装是否匹配，错误。封装错误不会在端口LED显示
B：确认线缆A/B是否为直通线，正确。异构设备使用直通线
C：确认线缆A是否插到trunk口，错误。
D：确认是否通电，正确。
E：重置所有电缆，正确。
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