Juniper Exam JN0-664 Topic 5 Question 46 Discussion

Actual exam question for Juniper's JN0-664 exam

Question #: 46
Topic #: 5

By default, which statement is correct about OSPF summary LSAs?

AAll Type 2 and Type 7 LSAs will be summanzed into a single Type 5 LSA

BThe area-range command must be installed on all routers.

CType 3 LSAs are advertised for routes in Type 1 LSAs.

DThe metric associated with a summary route will be equal to the lowest metric associated with an individual contributing route

Show Suggested Answer

Suggested Answer: C

OSPF uses different types of LSAs to describe different aspects of the network topology. Type 1 LSAs are also known as router LSAs, and they describe the links and interfaces of a router within an area. Type 3 LSAs are also known as summary LSAs, and they describe routes to networks outside an area but within the same autonomous system (AS). By default, OSPF will summarize routes from Type 1 LSAs into Type 3 LSAs when advertising them across area boundaries .

by Arlyne at Mar 21, 2025, 10:36 PM

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Marla

1 months ago

I'm going with option D. It just makes the most sense to me. Plus, who doesn't love a good summary route?

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Major

8 days ago

I'm not so sure, I think option A might be the correct one. Summarizing into a single LSA seems logical.

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Xochitl

20 days ago

I think option D is correct too. It's all about that lowest metric.

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Noah

2 months ago

Wait, did they say 'summanzed' in the question? I hope the real exam doesn't have any typos like that!

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Una

27 days ago

I think the correct answer is D) The metric associated with a summary route will be equal to the lowest metric associated with an individual contributing route.

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Samira

1 months ago

I know, I hope they fix that typo before the real exam.

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Gail

2 months ago

Hmm, I'm not sure about this one. Maybe option C is the correct answer? Type 3 LSAs are advertised for routes in Type 1 LSAs, right?

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Leota

2 months ago

I believe it's D as well, the summary route metric is based on the lowest contributing route.

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Micaela

2 months ago

I'm not sure, but I think it's between D and A.

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Hyman

2 months ago

I agree with Carman, the lowest metric is used for the summary route.

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Rosio

2 months ago

I disagree, I believe option B is the correct answer. The area-range command must be installed on all routers to enable summary LSAs.

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Lizette

24 days ago

I'm not sure, but I think option A is correct. All Type 2 and Type 7 LSAs will be summarized into a single Type 5 LSA.

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Haydee

28 days ago

I agree with you, option D seems to be the most accurate answer.

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Lashanda

1 months ago

Yes, without the area-range command, routers won't be able to generate summary LSAs.

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Willodean

1 months ago

I think option D is correct. The metric associated with a summary route will be equal to the lowest metric associated with an individual contributing route.

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