Nokia
4A0-100 · Question #194
In the diagram, R7 receives a new LSA from R3 and installs it in its link state database. 10 ms. later it receives another copy of the LSA with the same sequence number from R8. What does R7 do with…
The correct answer is C. R7 discards the LSA received from R8 and sends an ACK to R8. See the full explanation below for the reasoning.
Routing Fundamentals
Question
In the diagram, R7 receives a new LSA from R3 and installs it in its link state database. 10 ms. later it receives another copy of the LSA with the same sequence number from R8. What does R7 do with the LSA received from R8?
Exhibit
Options
- AR7 silently discards the LSA received from R8.
- BR7 installs the LSA received from R8 in its link state database andfloods a copy to its neighbors.
- CR7 discards the LSA received from R8 and sends an ACK to R8.
- DR7 installs the LSA received from R8 in its link state database, sends an ACK to R8 andfloods a
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(39 responses)- A13% (5)
- B5% (2)
- C79% (31)
- D3% (1)
Topics
#OSPF#LSA#sequence number#duplicate handling
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