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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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Herminia
3 days ago
It's D, nothing is done since it's considered old.
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Lisha
9 days 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
14 days 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
19 days 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
24 days 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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