题目内容

如果路由器的接口没有连接串行线缆,但其他信息都已正确并且激活了该接口,下列哪项接口信息状态是正确的?

A. Serial 0/0/0 is administratively down, line protocol is down
B. Serial 0/0/0 is down, line protocol is down
C. Serial 0/0/0 is up ( disabled )
D. Serial 0/0/0 is up ( looped )
E. Serial 0/0/0 is up, line protocol is down
F. Serial 0/0/0 is up, line protocol is up

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