Nokia 4A0-104 Exam - Topic 2 Question 104 Discussion

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

Question #: 104
Topic #: 2

What is the minimum Ethernet physical network MTU required for a Layer 2 service on an MPLS encapsulated SDP with a service MTU of 1500?

A1500

B1508

C1514

D1522

Show Suggested Answer

Suggested Answer: D

by Arleen at Nov 20, 2025, 07:56 PM

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Anissa

5 months ago

D) 1522 makes sense for encapsulation. More room for headers.

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Jodi

5 months ago

I feel A) 1500 is the safest choice. No extra bytes needed.

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Miesha

5 months ago

C) 1514 could work too. Not too much overhead.

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Karan

5 months ago

B) 1508 sounds reasonable. Just a bit more than 1500.

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Rebeca

5 months ago

I lean towards D) 1522. Extra overhead, right?

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Altha

6 months ago

I think it's A) 1500. Seems straightforward.

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Goldie

6 months ago

Wait, I didn't know it could be that high!

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Steffanie

6 months ago

I thought it was 1508?

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Brittni

7 months ago

It's 1514 for Ethernet with VLAN tagging.

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Kirk

7 months ago

Haha, who even uses MPLS these days? I'd just go with the standard 1500 MTU and call it a day.

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Theresia

7 months ago

B) 1508 is the right answer. You need to add the MPLS header size to the service MTU.

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Elmer

7 months ago

C) 1514 is the way to go. That's the standard Ethernet MTU with VLAN tagging.

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Daron

7 months ago

D) 1522 is the correct answer. You need to account for the MPLS header and other overhead.

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Asuncion

7 months ago

I’m really uncertain about this one. I thought the minimum was just 1500, but now I’m questioning if it should include the additional bytes.

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Desire

8 months ago

I feel like the answer is 1522 since it includes the overhead for the MPLS label, but I could be mixing it up with another topic.

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Renato

8 months ago

I remember practicing a similar question, and I think the answer was 1514, but that was for a different context.

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Aleisha

8 months ago

Alright, I've got this. The service MTU is 1500, so I just need to add the MPLS overhead to get the minimum Ethernet MTU. I think the answer is B.

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Melvin

8 months ago

I'm a bit confused by the wording of this question. I'll need to review my notes on MPLS and Ethernet MTUs to figure this out.

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Glory

8 months ago

The key here is understanding the MPLS encapsulation and how that affects the Ethernet frame size. I'll need to do some quick calculations.

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Jarod

9 months ago

A) 1500 seems like the obvious choice here. MPLS encapsulation shouldn't affect the service MTU.

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Jaime

9 months ago

I think the MTU needs to be larger than 1500 to account for the MPLS headers, but I'm not sure by how much.

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Nohemi

9 months ago

Nah, it's 1500, right?

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Winfred

9 months ago

Definitely 1522 for MPLS.

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Frank

9 months ago

Okay, let's see. The question is asking about the minimum Ethernet physical network MTU, so I'll need to consider the MPLS overhead.

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Lashanda

10 months ago

Hmm, this is a tricky one. I'll need to think through the MPLS encapsulation and how that impacts the Ethernet MTU.

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Delmy

4 months ago

MPLS adds overhead, so D) 1522 makes sense.

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Luz

4 months ago

I believe it’s C) 1514.

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Laura

4 months ago

Isn’t it A) 1500?

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Long

5 months ago

I’m leaning towards D) 1522.

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Tequila

8 months ago

I think it’s B) 1508.

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