Nokia Exam 4A0-112 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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Virgilio

1 months 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

23 days ago

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

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Glory

1 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 months 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

9 days 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

19 days 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

27 days 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

1 months ago

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

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Werner

2 months ago

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

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Charlene

2 months ago

Why do you think it's D?

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Silvana

2 months 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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