单选题After issuing the show interfaces terse command, you notice that the status of one interface is "up down". What does this indicate?"（）ALayer 1 on the interface is up but Layer 2 is down.BLayer 2 on the interface is up but Layer 3 has not been configured.CThe interface is administratively up but the link status is down.DThe interface is up but has been administratively turned off.
单选题
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.
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