Nokia 4A0-102 Exam - Topic 3 Question 73 Discussion

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

Question #: 73
Topic #: 3

Click the exhibit.

Router R2 receives a route to 192.168.1.0/27 from router R4, and sets the local preference to 110. Router R1 receives a route to 192.168.1.0/27 from router R3, and sets the local preference to 80. Both ASs have a full iBGP mesh. What path does traffic destined to 192.168.1.0/27 take from router R1?

AR1-R3-R8

BR1-R2-R4-R8

CR1-R3-R4-R8

DR1-R2-R4-R3-R8

Show Suggested Answer

Suggested Answer: B

by Ahmed at Dec 10, 2024, 04:37 AM

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Gerri

9 months ago

No way, R1-R3-R4-R8 is the right path!

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Ligia

9 months ago

Wait, I didn't realize local preference mattered that much!

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Natalie

10 months ago

I thought R1 would pick R3's route because it's closer.

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Annett

10 months ago

Definitely going through R2 since it has 110!

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Chu

10 months ago

R1 prefers the route with the higher local preference.

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Aja

10 months ago

I think the answer is B, since R2 has a higher local preference than R3, but I’m not completely confident about the path taken.

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Shayne

11 months ago

I’m a bit confused about the full iBGP mesh concept. Does that mean R1 can see both routes equally?

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Ludivina

11 months ago

This reminds me of a practice question where we had to analyze iBGP routes. I think the higher local preference takes precedence, so R1 should prefer R4's route.

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Makeda

11 months ago

I remember something about local preference affecting path selection, but I'm not sure how it plays out with multiple routes.

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Arlyne

11 months ago

I'm confident I can solve this. The key is understanding that in a full iBGP mesh, the route with the highest local preference will be selected, even if it's a longer path. So the answer is B, R1-R2-R4-R8.

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Stacey

11 months ago

Okay, I think I've got this. The route with the higher local preference (110) from R2 should be preferred over the route with the lower local preference (80) from R3. So the traffic should take the path R1-R2-R4-R8.

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Leota

11 months ago

Hmm, I'm a bit unsure about this one. The local preference values are different, but I'm not sure how that affects the path selection. I'll need to think it through step-by-step.

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Chana

11 months ago

This looks like a BGP routing question. I'll need to carefully consider the local preference values and the full iBGP mesh to determine the best path.

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Shayne

1 year ago

Haha, D must be the 'long way around' option. I'm not falling for that one, I'm sticking with B.

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Brittni

1 year ago

User 2: Yeah, D does seem like the long way around.

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Elliot

1 year ago

User 1: I agree, B seems like the most direct path.

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Micheline

1 year ago

Hmm, this is a tricky one. I'm torn between B and C. Guess I'll have to break out the BGP decision process flowchart to be sure.

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Hermila

1 year ago

I'm not sure, but I think the traffic will go through R1-R3-R8.

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Jose

1 year ago

Wait, are you telling me that the path involves R3 twice? That's gotta be a trick question. I'm going with C, R1-R3-R4-R8.

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Gwen

1 year ago

I agree with Layla, because R4 has a higher local preference set by R2.

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Maia

1 year ago

I think the answer is B, R1-R2-R4-R8. The local preference set on the route from R4 is higher than the one from R3, so R1 will prefer the path through R2 and R4.

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