How does IGMP snooping eliminate multicast flooding on the LAN?

Posted by: Pdfprep Category: 4A0-108 Tags: , ,

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

Answer: C

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