Nokia 4A0-112 Exam - Topic 1 Question 5 Discussion

Actual exam question for Nokia's 4A0-112 exam

Question #: 5
Topic #: 1

Consider the exhibit.

All routers are running IS-IS with IPv6 support enabled. Based on the topology shown, and the route tables of routers R3 and R4, which of the following statements is TRUE?

AThere is no route leaking configured on router R1 or router R2.

BRoute leaking is configured on router R1 but not on router R2.

CRoute leaking is configured on router R2 but not on router R1.

DRoute leaking is configured on both routers R1 and R2.

Show Suggested Answer

Suggested Answer: D

Based on the IPv6 route table output for R3 and R4, we can see that the routers have remote routes listed as 'Remote ISIS', indicating that the route is being advertised from a different area (area 49.01 or 49.02). This is a sign of route leaking, where routes from one area are being shared across areas.

The routes from R3 (level-1 router) are being advertised to R4 (level-1 router), and vice versa, with ISIS as the protocol. This implies that there is route leaking configured to allow information to pass between areas.

by Malcolm at Jan 25, 2025, 10:41 AM

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Jamie

3 months ago

C makes sense to me, R2 is where the leaking is happening.

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Hector

3 months ago

Wait, how can we be sure about R1 and R2? Seems sketchy.

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Buck

3 months ago

I disagree, I believe it's A. No leaking at all!

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Tatum

4 months ago

Definitely B, R1 has route leaking for sure.

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Julio

4 months ago

I think route leaking is not configured on R1 or R2.

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Jesusa

4 months ago

I vaguely remember that route leaking can be tricky, especially with IS-IS. I need to think about how R1 and R2 interact in this case.

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Denny

4 months ago

I feel like option A could be correct since it mentions no route leaking, but I’m hesitant because I might be mixing it up with another scenario.

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Benton

4 months ago

I think I practiced a similar question where we had to identify route leaking, but I can't recall the exact details for R1 and R2 here.

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Apolonia

5 months ago

I remember studying route leaking, but I’m not entirely sure how it applies to this specific topology.

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Malcolm

5 months ago

I think I've got a good strategy here. I'll start by looking at the topology and identifying the key routers and connections. Then I'll analyze the route tables to see if I can spot any signs of route leaking.

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Wilda

5 months ago

I'm a bit confused by the route tables mentioned in the question. I'll need to make sure I understand what information they're providing and how to interpret it.

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Allene

5 months ago

Okay, let me think this through step-by-step. The question is asking about route leaking, so I'll need to understand how that works in an IS-IS network with IPv6 support.

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Filiberto

5 months ago

Hmm, this looks like a tricky one. I'll need to carefully analyze the topology and the route tables to figure out which statement is true.

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Virgilio

1 year ago

Ha! This is like a game of 'Spot the Router Leak'. I bet the correct answer is hidden in plain sight.

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Glory

12 months ago

I agree, it seems like the most logical choice based on the topology and route tables.

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Glory

12 months ago

I think the correct answer is option D) Route leaking is configured on both routers R1 and R2.

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Leonora

1 year ago

This question is a real brainteaser! I'm going to have to study the route tables more closely before I can decide.

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Vashti

11 months ago

I see your point, but I still think the answer is D) Route leaking is configured on both routers R1 and R2.

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Berry

11 months ago

Actually, I think the answer is B) Route leaking is configured on router R1 but not on router R2.

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Iola

12 months ago

I disagree, I believe the answer is A) There is no route leaking configured on router R1 or router R2.

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Bo

12 months ago

I think the answer is D) Route leaking is configured on both routers R1 and R2.

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Werner

1 year ago

Because both routers R1 and R2 have route leaking configured based on the exhibit.

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Charlene

1 year ago

Why do you think it's D?

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Silvana

1 year ago

Okay, let's see... Based on the information provided, I think option D is the right answer. Route leaking on both R1 and R2 would make sense for this setup.

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