Juniper Exam JN0-351 Topic 7 Question 21 Discussion

Actual exam question for Juniper's JN0-351 exam

Question #: 21
Topic #: 7

Exhibit

Referring to the exhibit, which two configuration changes must you apply for packets to reach from R1 to R3 using IS-IS? (Choose two.)

AOn R1, enable Level 1 on the ge-0/0/1 interface.

BOn R3 disable Level 2 on the ge-0/0/4 interface.

COn R1, disable Level 2 on the ge-0/0/1 interface.

DOn R3 enable Level 1 on the ge-0/0/4 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 Freeman at Jun 23, 2024, 10:51 AM

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Beula

25 days ago

I wonder if the packets could just take a shortcut and parachute their way from R1 to R3. That would be a lot easier than all this configuration stuff.

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Jill

2 days ago

User1: A) On R1, enable Level 1 on the ge-0/0/1 interface.

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Josue

28 days ago

This question is making my head spin. I should probably just ask the proctor for the answer and call it a day. *sigh*

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Gary

1 months ago

Aha! I bet the answers are C and D. Disabling Level 2 on R1 and enabling Level 1 on R3. Let's do this!

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Rosenda

4 days ago

Iluminada: Oh, you might be right. Let's give it a try!

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Iluminada

19 days ago

User 2: No, I believe it's C and D. Disabling Level 2 on R1 and enabling Level 1 on R3.

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Deeanna

24 days ago

User 1: I think the answer is A and D. Enabling Level 1 on R1 and Level 1 on R3.

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Aaron

1 months ago

Wait, don't we need to disable Level 2 as well? I'm pretty sure that's the key to this puzzle.

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Maddie

8 days ago

User 3: Wait, don't we need to disable Level 2 on the ge-0/0/1 interface on R1 as well?

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Malinda

16 days ago

User 2: Yes, that's correct. We also need to enable Level 1 on the ge-0/0/4 interface on R3.

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Mauricio

18 days ago

User 1: I think we need to enable Level 1 on the ge-0/0/1 interface on R1.

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Viola

2 months ago

Hmm, this is a tricky one. I'm guessing I need to enable Level 1 on both R1 and R3 to get those packets flowing.

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Claudio

12 days ago

D) On R3 enable Level 1 on the ge-0/0/4 interface

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Noemi

20 days ago

A) On R1, enable Level 1 on the ge-0/0/1 interface.

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Nickole

2 months ago

I believe we also need to enable Level 1 on the ge-0/0/4 interface on R3 for packets to reach from R1 to R3.

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Roselle

2 months ago

I agree with Merlyn. That seems like a necessary configuration change.

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Merlyn

2 months ago

I think we need to enable Level 1 on the ge-0/0/1 interface on R1.

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