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

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

Question #: 4
Topic #: 4

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

From the route tables of R3 and R4, we can see that remote routes are present, with R3 and R4 both having routes referencing routers in different areas (Area 49.01 and 49.02). These remote routes are characteristic of route leaking, which is the process of sharing routes between different IS-IS areas.

R3 has routes for R1, R2, and R4, which are in Area 49.01, suggesting that R1 and R2 have advertised their routes to R3, possibly due to route leaking.

R4 has similar routes for R2 and R3, indicating that R2 might have advertised its routes to R4.

This sharing of routes between areas is indicative of route leaking being configured on both R1 and R2, allowing these routes to be shared across the areas.

by Sherron at Jan 28, 2025, 04:13 AM

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Alisha

3 months ago

Wait, are we sure about A? That seems too simple!

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Allene

3 months ago

D is just wrong, both routers are clean!

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Sherita

3 months ago

C seems unlikely, I doubt R2 has any leaks.

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Jamie

4 months ago

I think B could be right, but I’m not sure.

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Helaine

4 months ago

A is definitely true, no leaks on R1 or R2.

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Maile

4 months ago

I feel like option A could be the right answer since it mentions no route leaking, but I need to double-check the route tables again.

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Kenia

4 months ago

If I recall correctly, route leaking means that routes from one area can be shared with another. I just can't remember if it applies to both routers here.

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Leigha

4 months ago

I think I saw a similar question in our practice tests where we had to identify route leaking configurations. It was tricky!

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Lazaro

5 months ago

I remember studying route leaking, but I'm not entirely sure how it applies to R1 and R2 in this case.

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Stephen

5 months ago

I'm not sure about this one. The topology is a bit complex, and I'm not entirely familiar with the details of IS-IS routing. I'll need to take my time and think it through step-by-step.

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Roosevelt

5 months ago

Okay, I think I've got this. Based on the information provided, the correct answer is option D - route leaking is configured on both routers R1 and R2.

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Buddy

5 months ago

Hmm, I'm a bit confused by the concept of route leaking. I'll need to review my notes on that before I can confidently answer this question.

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Yuonne

5 months ago

This looks like a tricky question about IS-IS routing and route leaking. I'll need to carefully analyze the topology and the route tables to determine the correct answer.

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Tennie

1 year ago

Come on, this is an easy one. The answer is clearly D. Why else would we have this fancy topology diagram, if not to test our route leaking knowledge?

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Lenna

1 year ago

Because both routers need to have route leaking configured for the topology to work.

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Josephine

1 year ago

Haha, this question is a real brain-teaser! I'm going to guess B, just to keep things interesting.

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Mona

1 year ago

Hmm, this one's tricky. I'm going to go with C. Route leaking is only configured on R2, not R1.

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Adolph

11 months ago

User3: I'm going with C. Route leaking is only configured on R2, not R1.

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Princess

11 months ago

User2: I disagree, I believe it's D. Route leaking is configured on both R1 and R2.

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Nettie

12 months ago

User1: I think it's A. There is no route leaking configured on either R1 or R2.

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Chauncey

1 year ago

Why do you think it's D?

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Lenna

1 year ago

I disagree, I believe it's D.

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Laurel

1 year ago

I think the answer is D. Both routers R1 and R2 have route leaking configured, which is the only way to get the routes advertised between the two IS-IS domains.

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Rutha

1 year ago

Yes, that makes sense. Route leaking is necessary for the routes to be shared between the two domains.

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Malika

1 year ago

I agree with you, the answer is D. Both routers must have route leaking configured for the routes to be advertised between the two IS-IS domains.

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Chauncey

1 year ago

I think the answer is A.

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