下面哪些地址可以正確地表示 MAC 地址()。
A.A B.B C.C D.D
A. Interface is up, line protocol is up B. Interface is down, line protocol is down C. Interface is down, line protocol is up D. Interface is up, line protocol is down
A.特權(quán)模式 B.用戶模式 C.全局配置模式 D.接口配置模式