JNCIP-SP: Juniper Networks Certified Professional – Service Provider (2023) — Question 60

Which two statements are correct regarding the PIM DR in a PIM-SM domain? (Choose two.)

Answer options

• A. By default. PIM DR election is performed on point-to-point links.
• B. If the DR priorities match, the router with the lowest IP address is selected as the DR.
• C. The source DR sends PIM register messages from the source network to the RP.
• D. The receiver DR sends PIM join and PIM prune messages from the receiver network toward the RP.

Correct answer: C, D

Explanation

Answer C is correct because the source DR is responsible for sending PIM register messages to the RP to establish the multicast distribution. Answer D is also accurate as the receiver DR manages PIM join and PIM prune messages to control multicast group membership toward the RP. However, options A and B are incorrect as they do not accurately describe the functions of the PIM DR in a PIM-SM domain.