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350-401 · Question #408

350-401 Question #408: Real Exam Question with Answer & Explanation

PIM Dense Mode (PIM-DM) assumes multicast traffic is needed everywhere in the network, so it floods traffic to all routers and then uses explicit prune messages to stop forwarding on links where no receivers exist - this is the 'push' model. It builds source-based (shortest-path)

Submitted by chiamaka_o· Mar 6, 2026IP Connectivity / Multicast Routing Protocols - understanding the operational characteristics and differences between PIM Dense Mode and PIM Sparse Mode (CCNA/CCNP Enterprise)

Question

Drag and Drop Question Drag and drop the characteristics of PIM Dense Mode from the left to the right. Not all options are used. Answer:

Explanation

PIM Dense Mode (PIM-DM) assumes multicast traffic is needed everywhere in the network, so it floods traffic to all routers and then uses explicit prune messages to stop forwarding on links where no receivers exist - this is the 'push' model. It builds source-based (shortest-path) distribution trees rooted at the multicast source, meaning each source has its own dedicated tree. These three characteristics - source-based trees, push model, and prune mechanisms - together define how PIM-DM operates fundamentally.

Topics

#PIM Dense Mode#Multicast Routing#PIM-DM vs PIM-SM#Distribution Trees

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