Designing Cisco Network Service Architectures (ARCH, legacy) — Question 82

An engineer set up a multicast design using all three Cisco supported PIM modes. Which two characteristics of Bidirectional PIM in this situation are true?
(Choose two.)

Answer options

• A. Membership to a bidirectional group is signaled via explicit join messages.
• B. In Bidirectional PIM, the RP IP address can be shared with any other router interface.
• C. Bidirectional PIM is designed to be used for one-to-many applications.
• D. A Cisco router cannot support all three PIM modes simultaneously.
• E. In Bidirectional PIM, the RP IP address does not need to be a router.

Correct answer: A, E

Explanation

The correct answers are A and E. Membership in a bidirectional group is indeed communicated through explicit join messages, which is a key feature of this PIM mode. Additionally, in Bidirectional PIM, the RP IP address can be a non-router address, distinguishing it from other PIM modes. Options B and C are incorrect because Bidirectional PIM is not limited to one-to-many applications and the RP IP address has specific requirements regarding the router context.