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Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?
A．Serial0/1 is up, line protocol is down
B．Serial0/1 is down, line protocol is down
C．Serial0/1 is up, line protocol is up
D．Serial0/1 is administratively down, line protocol is down
E．None of the above
参考答案
更多 “ Which line from the output of the show ip interface command indicates that there is a Layer 1 problem?A．Serial0/1 is up, line protocol is downB．Serial0/1 is down, line protocol is downC．Serial0/1 is up, line protocol is upD．Serial0/1 is administratively down, line protocol is downE．None of the above ” 相关考题
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Which line from the output of the show ip interface command indicates a layer 1 problem?（）A、Serial0/1 is up, line protocol is downB、Serial0/1 is down, line protocol is downC、Serial0/1 is up, line protocol is upD、Serial0/1 is administratively down, line protocol is down
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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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多选题当用户端cisco路由器上用showinterface命令时line和lineprotocal可能出现的几种组合？（）。Aline down；line protocol downBline down；line protocolCline up；line protocol downDline up；line protocol up
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The port must be physically connected to another Layer 3 device.B
At least one port in VLAN 20 must be active.C
The Layer 3 routing protocol must be operational and receiving routing updates from neighboring peer devices.D
Because this is a virtual interface， the operational status will always be in an up/up state.
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单选题While logged into a router you manually shut down the serial 0 interface using the "shutdown" interface configuration command. You then issue the "show interface serial 0" command in exec mode. What could you expect the status of the serial 0 interface to be?（）A
Serial 0 is up, line protocol is upB
Serial 0 is up, line protocol is downC
Serial 0 is down, line protocol is downD
Serial 0 is down, line protocol is upE
Serial 0 is administratively down, line protocol is downF
Serial 0 is administratively down, line protocol is up
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PhysicalB
Data linkC
Network layerD
Transport layerE
Application layer
考题
单选题如果链路的一端被管理DOWN，你将看到的另一端接口状态输出信息是（）A
interface is down，line protocol is downB
interface is down，line protocol is upC
interface is up，line protocol is downD
interface is up，line protocol is up
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