HPE6-A73 HP Exam Questions and Free Practice Test

Question 19

How does PIM build the IP multicast routing table to route traffic between a multicast source and one or more receivers?

A. It uses the unicast routing table and reverse path forwarding (RPF)

B. It uses IGMP and calculates a shortest path tree (SPT)

C. It uses the shortest path first (SPF) algorithm derived from link state protocols

D. It uses the Bellman-Ford algorithm derived from distance vector protocols

Correct Answer:A
"PIM also relies on the unicast routing tables to identify the path back to a multicast source. This routing method is known as reverse path forwarding (RPF). The unicast routing protocols create the unicast routing tables. With this information, PIM sets up the distribution tree for the multicast traffic.

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