无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

單項選擇題

After issuing the show interfaces terse command, you notice that the status of one interface is "up down". What does this indicate?"()

A.Layer 1 on the interface is up but Layer 2 is down.
B.Layer 2 on the interface is up but Layer 3 has not been configured.
C.The interface is administratively up but the link status is down.
D.The interface is up but has been administratively turned off.

微信掃碼免費搜題