Nokia
4A0-100 · Question #196
In the diagram, R3 receives an LSA with sequence number 112 from R7 and installs it in its link state database. 10 ms. Later it receives a copy of the same LSA with a sequence number of 111 from R1…
The correct answer is A. R3 discards the LSA received from R1 and sends a copy of the LSA from its link state base to R1. See the full explanation below for the reasoning.
Routing Fundamentals
Question
In the diagram, R3 receives an LSA with sequence number 112 from R7 and installs it in its link state database. 10 ms. Later it receives a copy of the same LSA with a sequence number of 111 from R1. What does R3 do with the LSA from R1?
Options
- AR3 discards the LSA received from R1 and sends a copy of the LSA from its link state base to R1.
- BR3 installs the LSA received from R1 in its link state database and floods a copy to its neighbors.
- CR3 discards the LSA received from R1 and sends an ACK to R1.
- DR3 installs the LSA received from R1 in its link state database, sends an ACK to R1 and floods a
How the community answered
(42 responses)- A71% (30)
- B10% (4)
- C14% (6)
- D5% (2)
Topics
#OSPF#LSA#sequence number#flooding
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