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

Actual exam question for Nokia's 4A0-104 exam
Question #: 104
Topic #: 2
[All 4A0-104 Questions]

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?

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Suggested Answer: D

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

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Rebeca
4 hours ago
I lean towards D) 1522. Extra overhead, right?
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Altha
5 days ago
I think it's A) 1500. Seems straightforward.
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Goldie
10 days ago
Wait, I didn't know it could be that high!
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Steffanie
29 days ago
I thought it was 1508?
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Brittni
1 month ago
It's 1514 for Ethernet with VLAN tagging.
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Kirk
1 month 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
1 month ago
B) 1508 is the right answer. You need to add the MPLS header size to the service MTU.
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Elmer
2 months ago
C) 1514 is the way to go. That's the standard Ethernet MTU with VLAN tagging.
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Daron
2 months ago
D) 1522 is the correct answer. You need to account for the MPLS header and other overhead.
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Asuncion
2 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
2 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
2 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
3 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
3 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
3 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
3 months ago
A) 1500 seems like the obvious choice here. MPLS encapsulation shouldn't affect the service MTU.
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Jaime
3 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
4 months ago
Nah, it's 1500, right?
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Winfred
4 months ago
Definitely 1522 for MPLS.
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Frank
4 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
4 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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Tequila
3 months ago
I think it’s B) 1508.
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