What is the first action a router performs when it receives a multicast packet?
A) It determines if it is the DR for that segment.
B) It checks the PIM source group database for the matching group.
C) It sends a PIM Assert message to the RP.
D) It performs an RPF check on the packet.
E) It sends an IGMP join to the source.

Question

Quizplus · Accepted Answer

The first action a router performs when it receives a multicast packet is to perform a Reverse Path Forwarding (RPF) check to ensure the packet is received on the correct interface.

What Is the First Action a Router Performs When It