IOS and Security Device Manager - Technical MCQs

Q1:

Which command will show you whether a DTE or a DCE cable is plugged into serial 0?

A sh int s0

B sh int serial 0

C show controllers serial 0

D show serial 0 controllers

ANS:C - show controllers serial 0

The show controllers serial 0 command will show you whether either a DTE or DCE cable is connected to the interface. If it is a DCE connection, you need to add clocking with the clock rate command.