Huawei Exam H12-831_V1.0 Topic 1 Question 44 Discussion

Actual exam question for Huawei's H12-831_V1.0 exam

Question #: 44
Topic #: 1

The router ID of R4 is 10.0.4.4. The LSA shown in the figure is displayed in the LSDB of R4.

Which of the following statements are true about the LSA?

A. The three LSAs belong to area 1. B. Area 1 is a stub area. C. No OSPFv3 neighbor relationship is established on at least one link of R4. D. R4 is the DR on a link.

AThe three LSAs belong to area 1. (True)
The table explicitly shows 'Intra-Area-Prefix-LSA (Area 0.0.0.1)', meaning all LSAs are for Area 1.
The Link State IDs also indicate intra-area advertisements.
Statement A is correct.

BArea 1 is a stub area. (False)
There is no indication that Area 1 is a stub area.
Stub areas do not receive Type 5 (External) LSAs, and the LSDB does not show Type 3 (Inter-Area) LSAs either.
Network-LSAs (Type 2) are not typically seen in stub areas unless explicitly configured.
Statement B is incorrect.

CNo OSPFv3 neighbor relationship is established on at least one link of R4. (True)
One LSA references a Router-LSA, while two reference Network-LSAs.
A Router-LSA alone suggests that R4 has at least one point-to-point or unnumbered link with no OSPFv3 adjacency.
This means R4 has an interface with no neighbor (e.g., a passive interface or down link).
Statement C is correct.

DR4 is the DR on a link. (True)
The presence of Network-LSAs (Type 2) indicates that a multi-access link exists.
Since R4 is the origin of the Network-LSA, it must be the DR (Designated Router) for that link.
Statement D is correct.
Final Conclusion:
A. The three LSAs belong to area 1. (True)
B. Area 1 is a stub area. (False)
C. No OSPFv3 neighbor relationship is established on at least one link of R4. (True)
D. R4 is the DR on a link. (True)
Thus, the correct answers are: A, C, D.

Show Suggested Answer

Suggested Answer: A

by Viola at Apr 27, 2024, 05:18 AM

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26 days ago

I think the LSAs belong to area 1.

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