Which two statements are correct regarding bootstrap messages that are forwarded within a PIM sparse mode domain? (Choose two.)

Which two statements are correct regarding bootstrap messages that are forwarded within a PIM sparse mode domain? (Choose two.)
A . Bootstrap messages are forwarded only to routers that explicitly requested the messages within the PIM sparse-mode domain
B . Bootstrap messages distribute RP information dynamically during an RP election.
C . Bootstrap messages are used to notify which router is the PIM RP
D . Bootstrap messages are forwarded to all routers within a PIM sparse-mode domain.

View Answer

Answer: B,D

Explanation:

Bootstrap messages are PIM messages that are used to distribute rendezvous point (RP) information dynamically during an RP election. Bootstrap messages are sent by bootstrap routers (BSRs), which are routers that are elected to perform the RP discovery function for a PIM sparse-mode domain. Bootstrap messages contain information about candidate RPs and their multicast groups, as well as BSR priority and hash mask length. Bootstrap messages are forwarded to all routers within a PIM sparse-mode domain using hop-by-hop flooding.