Nokia 4A0-102 Exam - Topic 7 Question 79 Discussion

Actual exam question for Nokia's 4A0-102 exam

Question #: 79
Topic #: 7

Click on the exhibit.

AS 65540 is using MPLS to provide BGP shortcuts for its iBGP routing. AS 65541 is advertising prefix 192.168.1.0/27 into BGP. Which routers have the BGP update for the advertised prefix in their BGP table?

ARouters R1, R2, R3, R4 and R5.

BRouters R1and R4 only.

CRouters R1, R2, R3 and R4 only.

DRouters R1, R4 and R5 only.

Show Suggested Answer

Suggested Answer: D

by Alaine at Apr 04, 2025, 04:49 AM

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Brice

2 months ago

R1 and R4 only makes sense.

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Rodolfo

2 months ago

I think it's R1, R2, R3, and R4.

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Malcolm

3 months ago

Wait, are we sure about R5 being included?

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Corinne

3 months ago

Totally agree with R1, R2, R3, and R4!

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Gertude

3 months ago

AS 65541 is advertising 192.168.1.0/27.

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Ashleigh

3 months ago

I think I saw a similar question where only certain routers received updates. I’m leaning towards option B, but I’m not completely confident.

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Amie

4 months ago

I feel like I need to visualize the topology again. I vaguely recall that R5 might not be directly involved with the prefix advertisement.

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Tricia

4 months ago

I think it might be option C because it seems like R1, R2, R3, and R4 are the main routers in the AS, but I could be mixing it up with another question we practiced.

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Nickolas

4 months ago

I remember something about how BGP updates propagate, but I'm not sure which routers specifically would have the prefix in their tables.

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Beckie

4 months ago

The question is straightforward, but I want to double-check the network diagram to make sure I'm not missing any important details before selecting my answer.

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Carli

4 months ago

Okay, I think I've got this. Since AS 65540 is using MPLS for iBGP routing, the BGP update will only be present on the routers within that AS, which are R1, R2, R3, and R4.

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Glenn

5 months ago

I'm a bit confused by the MPLS part of the question. I'll need to review my notes on how MPLS can be used for BGP shortcuts before I can confidently answer this.

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Geoffrey

5 months ago

This looks like a standard BGP routing question. I'll need to carefully analyze the network topology and MPLS configuration to determine which routers will have the BGP update.

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Janine

10 months ago

Haha, this question is a real head-scratcher! I'm going to have to go with B - R1 and R4 only. It's the most 'out there' answer, so it must be the correct one, right? Just kidding, I think C is the way to go.

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Portia

9 months ago

Let's go with C then, it seems like the safest bet.

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Jenise

9 months ago

I think B is too limiting, C covers more routers.

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Yun

9 months ago

I agree, C seems like the most logical choice here.

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Tamar

10 months ago

But routers R2 and R3 are also part of AS 65540, so they should have the BGP update for the advertised prefix.

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Cortney

10 months ago

Hmm, I'm leaning towards D. R1, R4, and R5 seem like the logical choice since they're all directly connected to AS 65541. But I could be overthinking this...

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Heike

9 months ago

Yeah, R1, R4, and R5 seem like the most logical choices based on the information provided.

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Na

9 months ago

I agree, those routers would likely have the BGP update for the advertised prefix.

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Caitlin

10 months ago

I think D makes sense. R1, R4, and R5 are directly connected to AS 65541.

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Franklyn

10 months ago

I disagree, I believe the answer is B) Routers R1 and R4 only.

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Tamar

10 months ago

I think the answer is A) Routers R1, R2, R3, R4 and R5.

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Ma

11 months ago

I'm pretty sure the answer is C, only routers R1, R2, R3, and R4 will have the BGP update. The question mentions that AS 65541 is advertising the prefix, and since R1, R2, R3, and R4 are in the same AS, they'll receive the update.

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Giovanna

9 months ago

I'm pretty sure the answer is C, only routers R1, R2, R3, and R4 will have the BGP update.

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Daniela

9 months ago

Actually, I believe it's D, routers R1, R4, and R5 only will have the BGP update.

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Veronika

9 months ago

No, I disagree. The correct answer is C, only routers R1, R2, R3, and R4 will have the BGP update.

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Anthony

9 months ago

I think the answer is A, all routers R1, R2, R3, R4, and R5 will have the BGP update.

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Odette

9 months ago

I'm not sure, but I think it might be D, routers R1, R4, and R5 will have the update.

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Michal

9 months ago

Actually, I agree with the user comment, the answer is C, routers R1, R2, R3, and R4 will have the update.

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Flo

9 months ago

No, I believe it's B, only routers R1 and R4 will have the update.

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Georgiann

10 months ago

I think the answer is A, all routers R1, R2, R3, R4, and R5 will have the BGP update.

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