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Nokia 4A0-100 Exam - Topic 9 Question 49 Discussion

Actual exam question for Nokia's 4A0-100 exam
Question #: 49
Topic #: 9
[All 4A0-100 Questions]

Router R3 receives an LSA with the sequence number 111 from router R4 and then receives another copy of the LSA with a sequence number 112 from router R2. What does router R3 do with the LSA from R2?

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Suggested Answer: C

by Fletcher at May 06, 2022, 06:50 PM

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Rosina
4 months ago
Yep, R3 just keeps the latest LSA for accuracy!
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Ashlyn
4 months ago
Just to clarify, R3 sends an ACK to R2, right?
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Avery
4 months ago
Wait, are we sure about that? I thought R3 might install it instead.
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Belen
4 months ago
Totally agree, sequence numbers matter!
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Marilynn
4 months ago
R3 will discard the LSA from R2 since it has a lower sequence number.
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Stephaine
5 months ago
I feel like R3 would send an ACK to R2 if it discards the LSA, but I can't recall if that's the right choice here.
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Mitsue
5 months ago
I remember a practice question where the router installed the LSA if it was newer, so maybe R3 installs the one from R2?
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Truman
5 months ago
I think R3 should discard the LSA from R2 since it already has a newer one from R4, but I'm not entirely sure.
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Shantay
5 months ago
I’m leaning towards option D because it seems like R3 should acknowledge and flood the new LSA, but I need to double-check the sequence number rules.
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Cheryl
5 months ago
Incremental backup is the way to go on this type of question. I've seen it come up before on exams.
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