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Nokia 4A0-107 Exam - Topic 8 Question 42 Discussion

A frame belonging to a Layer 2 service is encapsulated in an MPLS tunnel at a network-egress port. Which of the following fields in the frame can be marked or remarked at the network egress port?
C) PREC
A) ToS
B) DSCP
D) EXP

Nokia 4A0-107 Exam - Topic 8 Question 42 Discussion

Actual exam question for Nokia's 4A0-107 exam
Question #: 42
Topic #: 8
[All 4A0-107 Questions]

A frame belonging to a Layer 2 service is encapsulated in an MPLS tunnel at a network-egress port. Which of the following fields in the frame can be marked or remarked at the network egress port?

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Suggested Answer: C

by Barbra at Mar 31, 2023, 06:36 AM

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Wynell
8 months ago
I thought only the EXP field was relevant in MPLS.
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Cristy
9 months ago
Totally agree, the PREC is not usually touched there.
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Edward
9 months ago
Wait, can you really change the ToS at the egress?
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Loreta
9 months ago
I think it's mostly about the EXP field in MPLS.
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Kanisha
9 months ago
You can definitely mark the DSCP field.
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Whitney
9 months ago
I'm a bit confused about PREC; I don't recall if that one is relevant in this context.
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Truman
9 months ago
I practiced a question like this before, and I feel like EXP is definitely a candidate for marking at the egress port.
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Erasmo
9 months ago
I remember something about DSCP being related to QoS, so it might be marked too.
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Barney
10 months ago
I think the ToS field can be marked, but I'm not entirely sure if it's the only one.
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Carri
10 months ago
The Data section sounds like the most logical choice here. That's where I'd expect to find options for grouping and calculations.
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Alonzo
10 months ago
Okay, let me see here. Acknowledging the speaker seems like a key part of active listening, so I'm leaning towards option A. But I want to double-check the other choices just to be sure.
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Lera
10 months ago
This seems straightforward - a Power Apps portal is used to collect customer cases, so the data source would likely be Dynamics 365 or Common Data Service.
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Theresia
1 year ago
Ah, the joys of networking terminology! I bet the correct answer is hidden somewhere in the depths of the OSI model, just waiting to trip us up. Time to dust off my networking textbooks and prepare for battle!
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Kristofer
1 year ago
Haha, this question is making my head spin! I'm going to go with B) DSCP and hope for the best. If all else fails, I'll just start guessing random letters like a game of Hangman.
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Ivette
1 year ago
Wait, I thought the answer was C) PREC. Isn't that the same as DSCP? I'm getting all these QoS fields mixed up. Someone please enlighten me!
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Mattie
1 year ago
Yes, that's correct. DSCP is the field that can be marked or remarked at the network egress port.
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Lisbeth
1 year ago
Oh, I see. So, the correct answer would be B) DSCP then.
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Charlene
1 year ago
PREC and DSCP are different fields. PREC stands for Precedence and DSCP stands for Differentiated Services Code Point.
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Marta
1 year ago
D) EXP
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Malcom
1 year ago
C) PREC
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Samira
1 year ago
B) DSCP
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Zoila
1 year ago
A) ToS
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Derick
1 year ago
I'm not so sure about that. I think the answer might be D) EXP. The EXP field is part of the MPLS header, which is used to encapsulate the Layer 2 frame, so it can be manipulated at the egress port.
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Darrin
1 year ago
Thanks for clarifying. It's good to know that the EXP field can be manipulated at the egress port.
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Freeman
1 year ago
Yes, that's correct. The EXP field is specifically used for traffic prioritization in MPLS networks.
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Aron
1 year ago
I think you're right. The EXP field in the MPLS header can be marked or remarked at the network egress port.
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Yan
1 year ago
I think the answer is B) DSCP. The DSCP field is part of the IP header, which is encapsulated within the Layer 2 frame, so it can be remarked at the network egress port.
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Wai
1 year ago
B) DSCP
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Lauryn
1 year ago
A) ToS
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Caren
1 year ago
I believe EXP field can also be marked or remarked at the network egress port for MPLS.
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Dorothy
1 year ago
I agree with Freeman, DSCP is used for QoS and can be modified at the egress port.
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Freeman
1 year ago
I think the DSCP field can be marked or remarked at the network egress port.
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