Which command will need to be added to External_A to ensure that it will take over if serial 0/0 on networkmanagers 13 years ago Which command will need to be added to External_A to ensure that it will take over if serial 0/0 on External_B fails? A.standby 1 preempt B.standby 1 track 10.10.10.1 C.standby 1 priority 130 D.standby 1 track fastethernet 0/0 ← Previous question Next question →