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Nokia 4A0-104 Exam - Topic 4 Question 63 Discussion

Actual exam question for Nokia's 4A0-104 exam

Question #: 63
Topic #: 4

[All 4A0-104 Questions]

Which of the following about VPLS MAC learning is TRUE?

AMesh SDPs assist MAC learning by flooding traffic to other mesh SDPs.

BA PE keeps a single FDB for all VPLSes it has.

CFrames received on a SAP that are broadcast, multicast or unknown are flooded.

DThe FDB only stores the MAC addresses of remote sites.

Show Suggested Answer

Suggested Answer: C

by Levi at Oct 23, 2023, 12:41 AM

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Anissa

8 months ago

D seems off. The FDB should store local MACs too, right?

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Fletcher

8 months ago

C is definitely true. Flooding is part of the process.

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Anissa

8 months ago

Wait, really? I thought the FDB was shared across all VPLSes.

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Elke

8 months ago

I disagree, B is misleading. Each VPLS has its own FDB.

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Norah

9 months ago

A is correct! Mesh SDPs do help with MAC learning.

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Eun

9 months ago

Option D seems off to me; I thought the FDB stored MAC addresses for both local and remote sites, not just remote ones.

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Rolland

9 months ago

I recall that mesh SDPs play a role in MAC learning, so option A might be correct, but I need to double-check that.

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Velda

9 months ago

I'm not entirely sure about option B; I remember something about PEs having separate FDBs for different VPLSes, but it could be different.

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Shizue

9 months ago

I think option C sounds familiar because we discussed how broadcast and multicast frames are typically flooded in VPLS.

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Nobuko

9 months ago

Ah, I remember this from the lectures. The correct answer is C - frames received on a SAP that are broadcast, multicast or unknown are flooded. VPLS uses a Flood and Learn mechanism for MAC learning, so that's the key thing to remember here.

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Paola

9 months ago

I'm a bit confused by this question. I know VPLS is a Layer 2 VPN technology, but the details of how MAC learning works are a bit hazy for me. I'll have to review my notes on this before answering.

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Lamar

10 months ago

Okay, let me see. I remember that VPLS uses SDPs to connect sites, and the FDB stores MAC addresses. I think the answer might be A, but I'm not 100% sure.

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Hortencia

10 months ago

Hmm, I'm a bit unsure about this. I know VPLS has something to do with MAC learning, but I'm not sure about the specifics. I'll have to think this through carefully.

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Sabrina

10 months ago

I'm pretty confident about this one. I think the answer is C - frames received on a SAP that are broadcast, multicast or unknown are flooded.

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Alline

10 months ago

This seems like a straightforward data validation requirement. I'd probably go with option B, "required Fields", as that seems like the most direct way to ensure the customer provides either a phone number or email address.

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Frederick

10 months ago

Hmm, integration parameters? I'm not entirely sure what that means. Let me re-read the question and see if I can figure out the right approach.

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Loreta

10 months ago

Ah, I remember learning about SOAP in class. It's a standard for how web services communicate, so I'm confident A is the right answer.

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Dino

10 months ago

Expert judgment makes the most sense to me. The other options don't seem directly relevant to validating the logic models. I'll go with A and move on to the next question.

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