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Nokia 4A0-107 Exam - Topic 2 Question 78 Discussion

Which of the following fields in packets belonging to a Layer 3 service can be pre-marked on SAP-ingress?
D) DSCP/PREC
A) Dot1p
B) DEI
C) EXP

Nokia 4A0-107 Exam - Topic 2 Question 78 Discussion

Actual exam question for Nokia's 4A0-107 exam
Question #: 78
Topic #: 2
[All 4A0-107 Questions]

Which of the following fields in packets belonging to a Layer 3 service can be pre-marked on SAP-ingress?

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Suggested Answer: D

by Roxane at Dec 05, 2024, 09:24 AM

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Elfriede
9 months ago
Wait, can you really pre-mark all those fields?
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Fletcher
9 months ago
I agree, DSCP/PREC is the way to go!
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Albina
10 months ago
Not sure about DEI, seems less common.
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Talia
10 months ago
I think Dot1p is also an option.
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Delmy
10 months ago
Definitely DSCP/PREC can be pre-marked.
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Rueben
10 months ago
I thought EXP was mentioned in our notes, but I can't remember if it was specifically for SAP-ingress or another context.
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Lilli
11 months ago
I’m leaning towards Dot1p being pre-marked, but I’m a bit confused about how it relates to the other options.
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Alease
11 months ago
I remember practicing a similar question where we had to identify which fields could be marked on ingress. I feel like DEI might be one of them, but I can't recall clearly.
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Antione
11 months ago
I think we discussed DSCP/PREC in class as something that can be pre-marked, but I'm not entirely sure about the others.
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Gianna
11 months ago
I think the answer is D. DSCP/PREC. That's the field in Layer 3 packets that can be pre-marked on SAP-ingress, if I remember correctly. I'm fairly confident in this answer, but I'll review the material just to be sure.
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Lynna
11 months ago
I'm a bit confused by this question. I know we're dealing with Layer 3 services, but I'm not sure which field can be pre-marked on SAP-ingress. I'll have to carefully read through the options and try to eliminate the ones that don't seem right.
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Victor
11 months ago
Okay, let's think this through step-by-step. We're looking for a field in Layer 3 packets that can be pre-marked on SAP-ingress. That narrows it down to DSCP/PREC or EXP. I'm leaning towards DSCP/PREC, but I'll double-check my notes to confirm.
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Tamala
11 months ago
Hmm, I'm not entirely sure about this one. I think it might be A. Dot1p, but I'm not 100% certain. I'll have to review the material again to be sure.
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Marsha
11 months ago
I'm pretty confident that the answer is D. DSCP/PREC is the field in Layer 3 packets that can be pre-marked on SAP-ingress.
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Karma
2 years ago
I'm going to have to go with D. The others just seem like they'd be more for Layer 2 or something. Unless this is a trick question and the answer is actually a duck.
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Bette
2 years ago
Hmm, I'm tempted to go with C. EXP, since that's the MPLS field for QoS. But I guess that's not really a Layer 3 thing.
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Freeman
2 years ago
Yeah, I agree. DSCP/PREC is the correct choice for pre-marking QoS in Layer 3 packets.
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Simona
2 years ago
I think D. DSCP/PREC is the field in Layer 3 packets that can be pre-marked for QoS.
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Tyisha
2 years ago
D) DSCP/PREC
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Rebbeca
2 years ago
C) EXP
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Nguyet
2 years ago
B) DEI
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Naomi
2 years ago
A) Dot1p
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Paris
2 years ago
D for sure. The other choices are more for lower layer protocols like Ethernet and MPLS.
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Rosio
2 years ago
Yes, DSCP/PREC is the correct choice for Layer 3 service packets.
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Whitley
2 years ago
I agree, DSCP/PREC is the field in Layer 3 packets that can be pre-marked on SAP-ingress.
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Corinne
2 years ago
D for sure. The other choices are more for lower layer protocols like Ethernet and MPLS.
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Luisa
2 years ago
I believe C) EXP can also be pre-marked in Layer 3 packets.
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Rosamond
2 years ago
I'm not sure, but I think A) Dot1p could also be pre-marked.
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Taryn
2 years ago
Yeah, D makes the most sense to me too. Can't really see any of the other options being relevant at Layer 3.
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German
2 years ago
D) DSCP/PREC
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Jettie
2 years ago
Yeah, D makes the most sense to me too. Can't really see any of the other options being relevant at Layer 3.
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Beckie
2 years ago
C) EXP
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Jenise
2 years ago
B) DEI
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Louis
2 years ago
A) Dot1p
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Veronique
2 years ago
I agree with Christoper, DSCP/PREC makes sense for pre-marking.
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Christoper
2 years ago
I think the answer is D) DSCP/PREC.
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Amalia
2 years ago
I'm pretty sure it's D. DSCP/PREC, since that's the Layer 3 field for QoS marking.
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Salome
2 years ago
Yes, DSCP/PREC is the Layer 3 field for QoS marking.
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Rodrigo
2 years ago
Agreed, DSCP/PREC is the correct field for QoS marking.
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Hoa
2 years ago
I think it's D. DSCP/PREC too.
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Alpha
2 years ago
D) DSCP/PREC
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Cherilyn
2 years ago
C) EXP
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Nettie
2 years ago
B) DEI
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Adell
2 years ago
A) Dot1p
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