How does an IGMP router maintain group memberships on the network? (Choose two.)
How does an IGMP router maintain group memberships on the network? (Choose two.)
An IGMP router maintains group memberships by periodically sending Query messages to determine which groups have active receivers. After receiving a Query message, a receiver host sends a Report message to indicate that it still wishes to be part of the group. Therefore, the router relies on these Report messages from hosts in response to its queries to maintain accurate group memberships. Receiver hosts send Report messages periodically to inform the router of their group memberships.
A is not correct. IGMP Router maintains timer per group, not per group/host pair.