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Nokia 4A0-105 Exam - Topic 2 Question 115 Discussion

Actual exam question for Nokia's 4A0-105 exam

Question #: 115
Topic #: 2

[All 4A0-105 Questions]

Which of the following functions must a PE router support when participating in a VPLS service? (Choose 3)

AMAC learning

BFrame replication

CFrame fragmentation

DFrame forwarding

EMust discard frames with an unknown destination MAC

FMSTP

Show Suggested Answer

Suggested Answer: A, B, D

by Milly at Jul 31, 2025, 07:35 PM

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Eric

8 months ago

A and D are obvious, but B is questionable.

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Bo

9 months ago

Wait, does it really need to do frame replication?

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Alesia

9 months ago

I think E is also a must.

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Elly

9 months ago

Definitely A, B, and D!

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Rolande

9 months ago

MAC learning is essential for sure!

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Mollie

9 months ago

I feel like I read that PE routers must discard frames with unknown destination MACs, but I can't recall if that's a requirement for VPLS specifically.

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Rodolfo

10 months ago

Frame forwarding seems like a must-have too, but I'm a bit confused about whether frame fragmentation is needed.

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Tori

10 months ago

I remember practicing a question similar to this, and I think frame replication is crucial for VPLS.

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Ezekiel

10 months ago

I think MAC learning is definitely one of the functions, but I'm not sure about the others.

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Kasandra

10 months ago

I'm a little stuck on this one. I know VPLS is important, but I'm not sure I fully understand all the router capabilities required. I'll have to review my notes on that.

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Ling

11 months ago

I'm confident I can get this one. The PE router has to support MAC learning, frame replication, and frame forwarding for VPLS. The other options don't seem directly relevant.

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Kerrie

11 months ago

Okay, let me think this through. The PE router needs to handle MAC learning, frame replication, and frame forwarding, right? Those seem like the core functions.

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Desmond

11 months ago

Hmm, I'm a bit unsure about this one. I know VPLS is a Layer 2 VPN, but I'm not totally clear on all the specific router requirements.

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Jennie

11 months ago

This question seems straightforward, I'll start by identifying the key functions a PE router must support in a VPLS service.

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Rachael

1 year ago

Alright, let's see... A, B, and D. Easy peasy. Though I have to admit, the 'Must discard frames with an unknown destination MAC' option has a certain je ne sais quoi to it. Might spice things up a bit, you know?

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Julianna

11 months ago

Yeah, I agree. 'Must discard frames with an unknown destination MAC' does sound interesting though.

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Mira

12 months ago

I think A, B, and D are the correct functions.

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Rickie

1 year ago

I'm just gonna go with the classics - A, B, and D. No need to overcomplicate things. Although, 'Must discard frames with an unknown destination MAC' does sound like a fun party trick.

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Dean

1 year ago

I think Frame replication could also be important for redundancy in VPLS service.

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Adelina

1 year ago

Haha, 'Frame fragmentation'? What is this, IPv4? VPLS is all about keeping those frames intact and moving them around. A, B, and D are the clear winners here.

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Boris

11 months ago

D) Frame forwarding

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Justa

12 months ago

B) Frame replication

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Larue

12 months ago

B) Frame replication

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Darell

12 months ago

A) MAC learning

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Nohemi

12 months ago

A) MAC learning

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Pearline

1 year ago

I agree with Cordie, MAC learning, discarding frames with unknown destination MAC, and frame forwarding are essential for VPLS service.

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Cordie

1 year ago

A, E, D are the functions that a PE router must support.

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Leonida

1 year ago

A, B, and D are definitely required for a PE router in VPLS. C and F are not needed, and E is just weird - why would we want to discard frames with unknown MAC addresses?

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Kris

11 months ago

Agreed, discarding frames with unknown MAC addresses doesn't make sense.

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Tambra

1 year ago

Yeah, C and F are not necessary for VPLS.

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Cornell

1 year ago

A, B, and D are essential for VPLS service on a PE router.

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