How does IGMP snooping eliminate multicast flooding on the LAN?
A) The switch populates multicast source addresses into the forwarding table
B) The switch acts as an IGMP proxy for the receiver
C) The switch inspects IGMP messages between receivers and routers and populates the forwarding table with active multicast group addresses
D) The switch inspects all multicast traffic between receivers and routers and populates the forwarding table with active multicast group addresses

Question

Quizplus · Accepted Answer

IGMP snooping works by inspecting IGMP messages exchanged between receivers and routers to learn which ports are interested in receiving specific multicast traffic, allowing the switch to populate its forwarding table with active multicast group addresses and thus eliminate unnecessary multicast flooding.

How Does IGMP Snooping Eliminate Multicast Flooding on the LAN