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Huawei H12-821_V1.0 Exam - Topic 4 Question 96 Discussion

On an OSPF network, routers learn routing information on the entire network by exchanging LSAs. Which of the following values is the LS Age in the LSA header when an LSA is deleted?
B) 3600s
A) 1800s
C) 1200s
D) 600s

Huawei H12-821_V1.0 Exam - Topic 4 Question 96 Discussion

Actual exam question for Huawei's H12-821_V1.0 exam
Question #: 96
Topic #: 4
[All H12-821_V1.0 Questions]

On an OSPF network, routers learn routing information on the entire network by exchanging LSAs. Which of the following values is the LS Age in the LSA header when an LSA is deleted?

Show Suggested Answer Hide Answer
Suggested Answer: B

LSA Lifetime and Deletion

The LS Age field in the LSA header tracks the age of an LSA. When the LS Age reaches its maximum value (3600 seconds), the LSA is marked for deletion. This ensures old or stale LSAs are removed from the network to maintain accurate routing information.

HCIP-Datacom-Core Reference

Detailed explanation of LS Age behavior and LSA deletion processes can be found in the OSPF LSDB and LSA sections.


by Loreta at May 02, 2026, 02:46 AM

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Terrilyn
2 days ago
I remember studying this! It’s definitely D) 600s.
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Justine
7 days ago
I feel like it’s A) 1800s. Seems reasonable for deletion timing.
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Jeanice
12 days ago
This question is tricky! I think it's B) 3600s.
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Nina
17 days ago
C) 1200s could be right too. Just a guess though.
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Anglea
23 days ago
I lean towards D) 600s. Shorter lifespan for deleted LSAs.
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Adelina
28 days ago
I feel like it's A) 1800s. It makes sense for a deletion.
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Skye
1 month ago
I think it's B) 3600s. Seems like a common value.
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Kris
1 month ago
But why would it be that high? I lean towards A) 1800s.
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Colton
1 month ago
I agree with Franchesca. B) 3600s makes sense for deletion.
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Blythe
2 months ago
I remember reading about LS Age. D) 600s sounds right to me.
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Shoshana
2 months ago
I feel like it's too high. Maybe C) 1200s is better.
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Franchesca
2 months ago
This question is tricky! I think it's B) 3600s.
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Justine
2 months ago
I agree, it's 3600s for sure!
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Tony
2 months ago
Wait, are you sure about that? Sounds off to me.
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Lai
2 months ago
Definitely 600s, that's what I remember!
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Glory
3 months ago
I thought it was 1800s, but I guess I was wrong.
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Ruthann
3 months ago
It's 3600s when an LSA is deleted.
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Coletta
3 months ago
I’m pretty confident that the LS Age when an LSA is deleted is 600 seconds, but I should double-check that.
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Jospeh
5 months ago
I feel like 1800 seconds sounds familiar for some reason, but I might be mixing it up with another concept.
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Casey
5 months ago
I remember practicing a question about LSAs, and I think the age value was related to the time before it gets removed, but I can't recall the exact number.
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Jess
5 months ago
I think the LS Age for a deleted LSA is supposed to be 3600 seconds, but I'm not entirely sure.
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