Which two mandatory tasks must an IS-IS NSF-capable router perform for RP switchover? (Choose
two.)

A.
Relearn the available IS-IS neighbors.

B.
Reacquire the contents of the LSD.

C.
Reset peering with the available IS-IS neighbors.

D.
Keep the existing contents of the LSD.

E.
Rediscover DIS for each link segment.