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Nokia 4A0-113 Exam - Topic 9 Question 113 Discussion

An OSPF router receives an update in which the sequence number, age, and checksum are the same as the entry already in the topological database. What action is taken by the router?
C) The link state information is not populated in the database and an acknowledgement is sent
A) The link state information is not populated in the database but is forwarded to all neighbors
B) The link state information already in the database is overwritten and the age is reset
D) The link state information is regarded as old and nothing is done.

Nokia 4A0-113 Exam - Topic 9 Question 113 Discussion

Actual exam question for Nokia's 4A0-113 exam
Question #: 113
Topic #: 9
[All 4A0-113 Questions]

An OSPF router receives an update in which the sequence number, age, and checksum are the same as the entry already in the topological database. What action is taken by the router?

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Suggested Answer: C

by Brittney at May 26, 2026, 05:41 PM

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Paz
3 days ago
I feel like C could be right too. Sending an acknowledgment is important.
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Charlene
8 days ago
A is risky. Better to stick with D.
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Chantay
13 days ago
But what about A? Forwarding to neighbors could be useful.
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Luke
18 days ago
I agree, D makes sense. No need to update.
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Chu
23 days ago
I think it's D. The info is old, so why change anything?
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Adolph
28 days ago
Just to clarify, the sequence number being the same means no update is needed.
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Yolando
1 month ago
Nah, it's definitely not A, that would cause unnecessary traffic.
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Francis
1 month ago
Wait, are you sure? I thought it might be A.
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Sang
1 month ago
Totally agree, D makes the most sense here.
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Herminia
2 months ago
It's D, nothing is done since it's considered old.
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Lisha
2 months ago
I practiced a similar question, and I think it’s about not changing the database if the sequence number is the same. So, option D sounds right to me.
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Arlen
2 months ago
I’m a bit confused, but I feel like if the info is the same, it shouldn’t overwrite anything. So maybe it’s option A?
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Halina
2 months ago
I remember something about OSPF not updating the database if the information is identical. Could it be option C, where it sends an acknowledgment?
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Erick
2 months ago
I think the router should just ignore the update since the sequence number and age are the same. Maybe it’s option D?
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