單項(xiàng)選擇題

如果路由器的接口沒(méi)有連接串行線纜,但其他信息都已經(jīng)正確并且激活了該接口,下列哪項(xiàng)接口信息狀態(tài)是正確的?()

A.Serial0/0/0 is administratively down,line protocol is down
B.Serial0/0/0 is down,line protocol is down
C.Serial0/0/0 is up,line protocol is up
D.Serial0/0/0 is up,line protocol is down

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