Discuss Nokia 4A0-104 Exam Topic 1 Question 103

Which of the following statements is TRUE concerning a VPRN data plane flow?

AA data packet will receive a service label at the CE and a transport label at the ingress PE.

BA data packet intended for a remote CE will have its service label swapped at each P router along the path towards the egress PE.

CAt the egress PE, the transport label will be popped and the data packet forwarded with the service label.

DThe service label is popped by the remote CE. The unlabeled packet is forwarded based on the longest match lookup algorithm in the VRF.

EAll of the above statements are false.

FAll of the above statements are true.

Suggested Answer: E

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18 comments · newest first

Dominga 10 months ago

Wait, are we sure about B? Sounds off to me.

Arleen 10 months ago

Totally agree, that’s how it works!

Audry 10 months ago

A is correct, service label at CE and transport label at ingress PE.

Willodean 11 months ago

C is definitely true, popping the transport label at egress PE is standard.

Adelle 11 months ago

All of them false? That’s surprising!

Afton 11 months ago

I feel like I came across a similar question where all statements were false, but I can't remember if that's the case here too.

Terina 11 months ago

I'm a bit confused about option B; I thought service labels were swapped at the egress PE, not at each P router.

Shawana 11 months ago

I think option C sounds familiar because I practiced a question about how labels are popped at the egress PE, but I can't recall if the service label is involved there.

Elenor 12 months ago

I remember that in VPRN, the service label is usually assigned at the ingress PE, but I'm not sure about the details of how it's handled at the CE.

Veronique 12 months ago

I've seen questions like this before, so I think I have a good handle on it. I'll quickly review the key concepts and then select the right answer.

Brock 1 year ago

The wording of this question is a bit tricky. I'll need to pay close attention to the details to make sure I don't miss anything.

Glen 1 year ago

Okay, let me think this through step-by-step. I know the CE adds a service label and the PE adds a transport label, but I'm not sure about the details of how they're used. I'll need to carefully read each option.

Cheryll 1 year ago

Hmm, I'm a bit confused about the difference between the service label and the transport label. I'll need to review that before attempting this.

Desiree 1 year ago

This question seems pretty straightforward. I'm pretty confident I can figure this out.

Cyndy 1 year ago

I think C is the correct answer. The transport label is popped at the egress PE, and the data packet is forwarded with the service label.

Tora 1 year ago

↳ replying to Cyndy

C) At the egress PE, the transport label will be popped and the data packet forwarded with the service label.

Reena 1 year ago

↳ replying to Cyndy

A) A data packet will receive a service label at the CE and a transport label at the ingress PE.

Viva 1 year ago

I think the answer is A.

Nokia 4A0-104 Exam - Topic 1 Question 103 Discussion