Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 144

What mechanism does PIM use to forward multicast traffic?

Answer options

• A. PIM sparse mode uses a pull model to deliver multicast traffic.
• B. PIM dense mode uses a pull model to deliver multicast traffic.
• C. PIM sparse mode uses receivers to register with the RP.
• D. PIM sparse mode uses a flood and prune model to deliver multicast traffic.

Correct answer: A

Explanation

The correct answer is A because PIM sparse mode indeed uses a pull model, where receivers request data from the source. Options B and D are incorrect as PIM dense mode does not utilize a pull model and PIM sparse mode does not use a flood and prune approach for multicast traffic. Option C, while true about PIM sparse mode, does not answer the question regarding the mechanism used for forwarding multicast traffic.