HSRP. Router 1 (master) and Router 2 (standby) same priority, when router 1 f0/1 (outside interface)

ccdp
hsrp-router1

#1

HSRP. Router 1 (master) and Router 2 (standby) same priority, when router 1 f0/1 (outside interface) down. Which tracking command will active to Router 2 Choose 2)

A. Track 50
B. Track 50 decrement 20
C. ip tracking 50 interface f0/1 reachability
D. ip tracking 50 Interface (outside interface )ip routing (or line protocol)

Correct Answer: BD