Nokia Exam 4A0-115 Topic 10 Question 36 Discussion

Actual exam question for Nokia's 4A0-115 exam

Question #: 36
Topic #: 10

[All 4A0-115 Questions]

Based upon the exhibit,

which of the following statements about the forwarding of BUM traffic is FALSE?

APE3 replicates the traffic and sends it to all PES in its VPLS I flooding list.

BPE3 adds an ESI label to packets forwarded to PEI because PEI is connected to the same Ethernet segment.

CPEI forwards the traffic received from PE3 to CEI, and CEI discards it based upon the ESI label.

DPE2 decapsulates the packets received from PE3 and forwards the frames to CE2.

Show Suggested Answer

Suggested Answer: A

The local AC tag ID configured on PE2 must match the local AC tag ID configured on PE1. This ensures that the tag IDs are consistent across both ends of the VPWS service.The remote AC tag ID configured on PE2 does not need to match the remote AC tag ID configured on PE3, as long as they are unique within each PE1.

Verified Reference:Ethernet Virtual Private Networks (EVPNs)

by Margurite at Feb 10, 2025, 12:59 AM

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Starr

1 days ago

Option C is definitely false. The ESI label is added to identify the Ethernet segment, not to discard the traffic. PEI would forward the traffic to CE1, not discard it.

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Berry

7 days ago

But C makes sense because CEI would discard the traffic based on the ESI label.

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Gilma

9 days ago

I disagree, I believe the answer is D.

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Berry

12 days ago

I think the answer is C.

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