After the network has converged, what type of messaging, if any, occurs between R3 and R4?
A . No messages are exchanged
B . Hellos are sent every 10 seconds.
C . The full database from each router is sent every 30 seconds.
D . The routing table from each router is sent every 60 seconds.
Answer: B
Explanation:
HELLO messages are used to maintain adjacent neighbors so even when the network is converged, hellos are still exchanged. On broadcast and point-to-point links, the default is 10 seconds, on NBMA the default is 30 seconds.
Although OSPF is a link-state protocol but the full database from each router is sent every 30 minutes (not seconds) -> C and D are not correct.
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