Match each multicast protocol to its role.
Drag a concept onto its matching description — or click a concept then click the description.
Host-to-router protocol for joining multicast groups
Sparse mode multicast routing using RP
Dense mode multicast routing assuming all routers want traffic
Protocol for connecting multiple PIM-SM domains
Bootstrap Router for automatic RP election
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
IGMP: Manages multicast group membership between hosts and local routers
These are essential multicast protocols for service provider IPTV and content delivery.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
IGMP: Manages multicast group membership between hosts and local routers
Why this is correct
IGMP is used by hosts to report multicast group membership to directly connected routers.
PIM-SM: Builds shared trees and uses a rendezvous point (RP) for group sources
Why this is correct
PIM-SM uses an RP to join sources and receivers in a scalable manner.
MSDP: Shares active source information between different PIM-SM domains
Why this is correct
MSDP allows multiple RPs to discover sources in other domains for inter-domain multicast.
MBGP: Carries multicast routing information in BGP updates for inter-domain routing
Why this is correct
MBGP (Multiprotocol BGP) is used to exchange multicast reachability information.
IGMP: Builds distribution trees for efficient multicast forwarding
Why it's wrong here
Incorrect — tree building is done by PIM, not IGMP.
PIM-SM: Shares active source information between different domains
Why it's wrong here
Incorrect — this describes MSDP, not PIM-SM.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-501 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-501 exam.