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Juniper Exam JN0-351 Topic 6 Question 25 Discussion

Actual exam question for Juniper's JN0-351 exam

Question #: 25
Topic #: 6

[All JN0-351 Questions]

You are an operator for a network running 1S-IS. Two routers are failing to form an adjacency. What are two reasons for this problem? (Choose two.)

AThere are mismatched router IDs on the L2 routers.

BThere is no configured ISO address on any IS-IS interface.

CThere is a mismatched area ID between the L2 routers.

DThe family iso configuration is missing from the adjacency interface.

Show Suggested Answer

Suggested Answer: B, D

The two reasons for the failure to form an adjacency in a network running IS-IS could be:

B) There is no configured ISO address on any IS-IS interface.IS-IS requires each router interface to have an ISO address configured.Without this address, the routers cannot form an adjacency1.

D) The family iso configuration is missing from the adjacency interface.The 'family iso' configuration is essential for IS-IS to function correctly.If this configuration is missing from the adjacency interface, it could prevent the formation of an adjacency1.

These explanations are based on the Enterprise Routing and Switching Specialist (JNCIS-ENT) documents and learning resources available at Juniper Networks23.

by Elroy at Aug 02, 2024, 07:40 AM

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Malcolm

2 months ago

Yes, that makes sense. Both reasons could be causing the adjacency issue.

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Chauncey

2 months ago

I believe another reason could be mismatched area IDs.

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Refugia

2 months ago

I agree with Matt, that could definitely be one reason.

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Matt

2 months ago

I think the reason could be mismatched router IDs.

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Luisa

2 months ago

Yes, that makes sense. Both reasons could be causing the problem.

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Paul

2 months ago

I believe another reason could be the mismatched area ID between the routers.

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Tesha

3 months ago

Definitely C and D. Routers are like moody teenagers sometimes - they just won't communicate if the settings aren't exactly right. *rolls eyes*

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Yesenia

2 months ago

We should also check if the family iso configuration is missing from the adjacency interface.

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Mari

2 months ago

Yeah, that could definitely be causing the problem.

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Leslie

2 months ago

I think the issue is with the mismatched area ID between the L2 routers.

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Noel

3 months ago

I agree with Minna, that could definitely cause the adjacency issue.

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Tanesha

3 months ago

Hah, well if it's not one thing, it's another! I'd go with C and D as well. Can't have those routers not talking to each other, that's just bad news.

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Mozell

2 months ago

Good point, that could be another reason for the adjacency not forming.

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Shawnna

2 months ago

And the family iso configuration is missing from the adjacency interface.

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Marsha

2 months ago

Yeah, that could definitely be causing the problem.

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Lorean

2 months ago

I think the issue might be a mismatched area ID between the L2 routers.

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Minna

3 months ago

I think the reason could be mismatched router IDs.

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Brittni

3 months ago

I agree, C and D are the correct answers. Gotta love those pesky configuration issues, am I right? *laughs*

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Gladys

2 months ago

C) There is a mismatched area ID between the L2 routers.

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Micheline

2 months ago

A) There are mismatched router IDs on the L2 routers.

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Isaiah

4 months ago

C and D seem like the most likely reasons. Mismatched area ID and missing family iso configuration could definitely prevent the adjacency from forming.

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Selma

3 months ago

D) The family iso configuration is missing from the adjacency interface.

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James

3 months ago

C) There is a mismatched area ID between the L2 routers.

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