Nokia 4A0-C02 Exam - Topic 6 Question 117 Discussion

Actual exam question for Nokia's 4A0-C02 exam

Question #: 117
Topic #: 6

Click the exhibit.

Router R6 is a route reflector for clients R1, R2 and R5. Router R5 is configured with a local preference of 200. On which routers is "advertise-external* needed for router R6 to receive exactly two distinct routes for prefix 192.168.1.0/27?

AOn router R5 only.

BOn either router R1or R2.

COn both routers R1and R2.

DOn all routers R1, R2 and R5.

Show Suggested Answer

Suggested Answer: C

by Brittni at Nov 25, 2025, 06:15 AM

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Cathrine

5 months ago

I’m confused about the local preference. Does it affect the answer?

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Malinda

5 months ago

I agree with Jeannetta. C is the best choice for distinct routes.

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Timothy

5 months ago

D seems too broad. I don't think all routers need it.

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Dalene

5 months ago

I’m leaning towards A. Just R5 should be enough.

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Jeannetta

6 months ago

I feel like C makes more sense. Both R1 and R2 need to advertise.

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Ira

6 months ago

This question is tricky! I think it's B.

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Georgeanna

6 months ago

Surprised this is even a question! Thought it was common knowledge.

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Merilyn

7 months ago

Totally agree with C! Both need to advertise for distinct routes.

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Dominga

7 months ago

Wait, why would we need it on all routers? Seems off.

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Juliann

7 months ago

I think it's C) On both routers R1 and R2.

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Frederick

7 months ago

Hmm, "advertise-external" - sounds like a superhero power to me!

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Vinnie

7 months ago

B) is the way to go. Gotta keep it simple, right?

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Lamonica

7 months ago

D) is just overkill. Why configure all routers when you only need R1 and R2?

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Gladys

8 months ago

C) seems correct, as both R1 and R2 need the "advertise-external" config for R6 to get two routes.

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Teresita

8 months ago

I vaguely recall that "advertise-external" is crucial for route reflectors to function properly, so it might be needed on both R1 and R2 to get two distinct routes.

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Michal

8 months ago

I’m a bit confused about the local preference aspect. Does that affect whether "advertise-external" is needed on R1 and R2?

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Selma

8 months ago

Alright, I'm going to sketch out the topology and try to visualize the BGP decision process. That should help me identify the right routers to configure.

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Rachael

8 months ago

I think the key is understanding how the local preference setting on R5 affects the route selection. If I can get R1 or R2 to advertise an external route, that might do the trick.

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Bulah

8 months ago

I think I practiced a similar question where we had to determine the necessary configurations for route reflectors. I feel like it might just be R5 that needs it.

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Tresa

9 months ago

I remember something about route reflectors needing specific configurations to avoid loops, but I'm not sure if "advertise-external" is required on all routers or just some.

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Cortney

9 months ago

I'm a bit confused by the "advertise-external" requirement. Does that mean I need to configure something on the routers to get the external routes to R6?

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Harrison

9 months ago

B) makes sense, since R6 needs to receive two distinct routes for the prefix.

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Virgie

9 months ago

A) On router R5 only. That's the right call.

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Mari

9 months ago

Okay, let me think this through step-by-step. R6 is the route reflector, and R5 has a higher local preference, so I'll need to figure out how to get two distinct routes to R6.

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