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Nokia 4A0-115 Exam - Topic 4 Question 35 Discussion

Actual exam question for Nokia's 4A0-115 exam
Question #: 35
Topic #: 4
[All 4A0-115 Questions]

Examine the exhibit.

Which of the following actions is performed by PEI after it receives a BUM packet from CEI?

Show Suggested Answer Hide Answer
Suggested Answer: D

EVPN-MPLS provides services over an MPLS network, not a simple IP network.The customer data is encapsulated with an MPLS label that identifies the service and then tunneled between the PE routers using MPLS LSPs1.

Verified Reference:Ethernet Virtual Private Networks (EVPNs)


by Gertude at Jan 22, 2025, 11:57 AM

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Alline
3 months ago
Totally agree with option A, non-DF means no flooding!
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Yoko
3 months ago
Wait, why would PEI send to both PE2 and PE3? Sounds odd.
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Cristal
3 months ago
Definitely option C, ESI label to PE2 makes sense!
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Sharika
4 months ago
I think it's option B, sending to PE2 only.
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Clare
4 months ago
PEI acts as a non-DF for VPLS 10, so no flooding.
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Markus
4 months ago
I'm leaning towards option B, but I wonder if there's a specific reason PE3 wouldn't get the packet. It feels like it could be a trick question.
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Wei
4 months ago
I feel like PEI has to send the packet to both PE2 and PE3, but I can't recall which label goes where.
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Tatum
4 months ago
I remember a similar question where PEI had to decide whether to send packets to multiple PEs. I think it was about avoiding loops or something.
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Galen
5 months ago
I think PEI might not flood the packet since it's a non-designated forwarder, but I'm not completely sure.
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Inocencia
5 months ago
I've got a good strategy for this. I'll eliminate the options that don't make sense based on the information provided, then choose the one that best fits the scenario described in the question.
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Moon
5 months ago
Okay, let me think this through. PEI is the non-designated forwarder for VPLS 10, so that rules out option A. The question is asking what PEI does with the packet, so I need to focus on the remaining options.
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Coleen
5 months ago
Hmm, I'm a bit unsure about this one. The details around PEI's actions after receiving the BUM packet are a bit confusing to me. I'll need to re-read the question carefully.
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Dorinda
5 months ago
This question seems pretty straightforward. I think I can work through it step-by-step and figure out the right answer.
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Garry
10 months ago
Don't forget to double-check your work, folks. These VPLS questions can be real brain-teasers!
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Barrett
9 months ago
C) PEI sends the packet to PE2 and to PE3. An ESI label is included only in the packet sent to PE2.
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Genevieve
9 months ago
B) PEI sends the packet to PE2 but not to PE3 because PE3 is connected to the originating ES.
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Lashawnda
9 months ago
A) PEI does not flood the packet because PEI is acting as non-designated forwarder (non-DF) for VPLS 10.
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Ricarda
10 months ago
This is a tough one, but I'm confident I can figure it out. I just need to remember the key VPLS forwarding rules.
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Aleisha
9 months ago
C) PEI sends the packet to PE2 and to PE3. An ESI label is included only in the packet sent to PE2.
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Penney
9 months ago
B) PEI sends the packet to PE2 but not to PE3 because PE3 is connected to the originating ES.
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Tyisha
10 months ago
A) PEI does not flood the packet because PEI is acting as non-designated forwarder (non-DF) for VPLS 10.
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Vannessa
10 months ago
Haha, I bet the test designers are trying to catch us out with those tricky answer options. Time to put on my thinking cap!
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Louann
10 months ago
Hmm, I'm not too familiar with the ESI label, so I'll need to make sure I understand that part properly.
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Raul
9 months ago
Hmm, I'm not too familiar with the ESI label, so I'll need to make sure I understand that part properly.
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Estrella
9 months ago
C) PEI sends the packet to PE2 and to PE3. An ESI label is included only in the packet sent to PE2.
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Haley
9 months ago
B) PEI sends the packet to PE2 but not to PE3 because PE3 is connected to the originating ES.
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Nell
9 months ago
A) PEI does not flood the packet because PEI is acting as non-designated forwarder (non-DF) for VPLS 10.
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Mari
10 months ago
Wow, this question is really testing our understanding of VPLS forwarding! I'm going to have to think this through carefully.
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Vinnie
9 months ago
User2: I agree, that makes sense based on the information provided in the question.
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Alesia
9 months ago
User1: I think the answer is C) PEI sends the packet to PE2 and to PE3. An ESI label is included only in the packet sent to PE2.
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Sylvie
11 months ago
That's an interesting perspective, Shalon. I guess we'll have to wait and see which one is correct when we get our exam results.
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Shalon
11 months ago
I disagree, I believe the answer is D. PEI sends the packet to both PE2 and PE3, but includes an ESI label only in the packet sent to PE3.
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Sylvie
11 months ago
I think the answer is C because PEI sends the packet to both PE2 and PE3, but includes an ESI label only in the packet sent to PE2.
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