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Nokia 4A0-105 Exam - Topic 4 Question 20 Discussion

Click on the exhibit below.Assuming there is a full mesh of mesh-SDPs between the PEs within each metro network and a spoke-SDP between PE-C of Metro A and PE-B of Metro B. how is traffic forwarded from PE-A in Metro A to PE-D of Metro B? Select the most accurate statement.
D) A VPLS FDB lookup is done at PE-A and PE-C of Metro A and PE-B of Metro B
A) An LSP must be configured between PE-A and PE-D for this traffic to be forwarded.
B) A VPLS FDB lookup is done at PE-A of Metro A only
C) An SDP must be configured between PE-A of Metro A and PE-D of Metro D for this traffic to be forwarded

Nokia 4A0-105 Exam - Topic 4 Question 20 Discussion

Actual exam question for Nokia's 4A0-105 exam
Question #: 20
Topic #: 4
[All 4A0-105 Questions]

Click on the exhibit below.

Assuming there is a full mesh of mesh-SDPs between the PEs within each metro network and a spoke-SDP between PE-C of Metro A and PE-B of Metro B. how is traffic forwarded from PE-A in Metro A to PE-D of Metro B? Select the most accurate statement.

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Suggested Answer: D

by Howard at May 06, 2022, 02:11 AM

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Eliz
7 months ago
I disagree, I believe an SDP is essential for this scenario.
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Jerry
7 months ago
No way, I thought it was just a lookup at PE-A!
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Joaquin
7 months ago
Isn't it surprising that you need a specific SDP for forwarding?
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Felix
8 months ago
I think a VPLS FDB lookup happens at all those PEs.
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Lakeesha
8 months ago
Definitely need an LSP for that traffic to go through.
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Andra
8 months ago
I vaguely recall that VPLS FDB lookups involve multiple points, so I’m leaning towards the option that mentions PE-A and PE-C, but I’m not entirely confident.
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Ailene
8 months ago
I think I might be confusing the LSP requirements with the SDP configurations. Does traffic need an LSP to go from PE-A to PE-D?
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Wava
8 months ago
This question feels similar to one we practiced where we had to determine the path of traffic in a mesh network. I think the FDB lookup might involve multiple PEs.
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Isreal
8 months ago
I remember something about VPLS and how it handles forwarding, but I'm not sure if the lookup happens at just PE-A or if it involves the other PEs too.
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Katheryn
8 months ago
Okay, let me think this through. BDD and ATDD are all about defining the expected behavior upfront, so I'd guess the answer is Model-based testing.
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Earleen
8 months ago
Okay, let me see... I remember learning about the different OSS object types, and I think Snapshot is one that can be used for lifecycle management. But I'm not 100% sure about the other one. I'll make an educated guess and go with A and B.
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Desiree
8 months ago
Focus groups would be terrible here - people won't speak candidly with peers around. I'm leaning towards interviews as the most direct approach.
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