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Question 555 - H12-224 discussion
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 areceiver 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.
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