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共用题干题工程师利用测试设备对某信息点已经连接好的网线进行测试时,发现有4根线不通,但计算机仍然能利用该网线连接上网。则不通的4根线可能是(15)。某些交换机级联时,需要交换UTP一端的线序,其规则是(16),对变更了线序的UTP,最直接的测试方式是(17)。

空白处(16)应选择()

A.1<-->2,3<-->4

B.1<-->2,3<-->6

C.1<-->3,2<-->6

D.5<-->6,7<-->8


参考答案

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