If the status line condition of a serial interface is "Serial x is administratively down, line protocol is down", what actions should you perform to fix the problem? (Choose two)

reconfigure the IP address on the interface to resolve the duplicate IP issue

enter the "clock rate" interface command

replace the cable

enter the "no shutdown" interface command

use serial analyzers and breakout box then observe toggling CTS and DSR signals

Explanation

There are 2 reasons a serial interface would show admin down/down. The first is that it was administratively shut with the Interface Configuration Command of #shutdown. You can change the interface status with the interface configuration command of #no shutdown.

The second reason is because there is a duplicate IP address assigned to the interface. Issue the interface configuration command of #ip address address subnet mask and then issue the #no shutdown command to assign a new IP address and re-enable the interface.