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An OSPF router receives an LSA, the router checks its sequence number, and this number matches the sequence number of the LSA that the receiving router already has. What does the receiving router do with the LSA?

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An OSPF router receives an LSA, the router checks its sequence number, and this number matches the sequence number of the LSA that the receiving router already has. What does the receiving router do with the LSA?

(a) Ignores the LSA

(b) Adds it to the database

(c) Sends newer LSU update to source router

(d) Floods the LSA to the other routers

I got this question in semester exam.

The origin of the question is OSPF Configuration in portion Network Layer of Computer Network

1 Answer

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Best answer
Right option is (a) Ignores the LSA

Best explanation: When the OSPF router receives an LSA, the router checks its sequence number. If this number matches the sequence number of the LSA that the receiving router already has, the router ignores the LSA.

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