What are three possible router states of HSRP routers on a LAN? (Choose three.)

A.
standby

B.
established

C.
active

D.
idle

E.
backup

F.
initial

Explanation:
Internally, each router in the standby group implements a state machine. The State field
describes the current state of the router sending the message. Possible values are:
0 – Initial
1 – Learn
2 – Listen
4 – Speak
8 – Standby
16 – Active
Reference: http://www.ietf.org/rfc/rfc2281.txt