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Question 10 - NSE7_EFW-7.2 discussion

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Refer to the exhibit, which contains a partial OSPF configuration.

What can you conclude from this output?

A.
Neighbors maintain communication with the restarting router.
Answers
A.
Neighbors maintain communication with the restarting router.
B.
The router sends grace LSAs before it restarts.
Answers
B.
The router sends grace LSAs before it restarts.
C.
FortiGate restarts if the topology changes.
Answers
C.
FortiGate restarts if the topology changes.
D.
The restarting router sends gratuitous ARP for 30 seconds.
Answers
D.
The restarting router sends gratuitous ARP for 30 seconds.
Suggested answer: B

Explanation:

From the partial OSPF (Open Shortest Path First) configuration output:

B) The router sends grace LSAs before it restarts: This is implied by the command 'set restart-mode graceful-restart'. When OSPF is configured with graceful restart, the router sends grace LSAs (Link State Advertisements) to inform its neighbors that it is restarting, allowing for a seamless transition without recalculating routes.

Fortinet documentation on OSPF configuration clearly states that enabling graceful restart mode allows the router to maintain its adjacencies and routes during a brief restart period.

asked 18/09/2024
Kayode Omotosho
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