What is a function of IGMP snooping?
- updating static MAC entries on ports that should receive multicast traffic from certain sources or groups
- learning and maintaining multicast group memberships
- restricting multicast packets for IP multicast groups that have downstream receivers
- updating receiver applications to filter out unwanted traffic
Explanation: IGMP snooping reduces multicast flooding on a LAN segment by learning and maintaining multicast group memberships at the Layer 2 level.