How does an IGMP router maintain group memberships on the network? (Choose two.)
A.
The router maintains a timer for each group membership. If the router receives a Report message from a receiver host, it refreshes the timer of the group membership of this host; if the router does not receive any Report message from a receiver host before the timer expires, it deletes the group membership of this host.
B.
The router periodically sends Query messages. After a receiver host receives the Query message, the receiver host sends a Report message.
C.
A receiver host periodically sends a Report message.
D.
The router deletes a group membership only when it receives a Leave message for this group.
A is not correct. IGMP Router maintains timer per group, not per group/host pair.
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vasiliy19
4 years, 9 months ago