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Nokia 4A0-105 Exam - Topic 7 Question 53 Discussion

How does PBB forward broadcast, unknown-unicast and multicast traffic from a B-VPLS to an l-VPLS?
D) The receiving PE checks the multicast B-DA to see if an l-SID has been mapped to the B-DA that matches a local l-VPLS on the node.
A) The receiving PE checks the l-TAG in the l-SID to determine if there is a local l-VPLS on the node.
B) The receiving PE checks the l-SID in the l-TAG to determine if there is a local l-VPLS on the node.
C) The receiving PE checks the service label in the mpls header to determine if there is a local l-VPLS on the node.

Nokia 4A0-105 Exam - Topic 7 Question 53 Discussion

Actual exam question for Nokia's 4A0-105 exam
Question #: 53
Topic #: 7
[All 4A0-105 Questions]

How does PBB forward broadcast, unknown-unicast and multicast traffic from a B-VPLS to an l-VPLS?

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Suggested Answer: D

by Cassi at Jun 15, 2022, 10:41 PM

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Vi
7 months ago
I thought it was the service label in the MPLS header?
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Shantay
7 months ago
The multicast B-DA mapping is crucial too, don't forget that!
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Iluminada
7 months ago
Wait, are we sure about that? Sounds a bit off.
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Makeda
8 months ago
Totally agree, option B is the way to go!
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Leota
8 months ago
It's all about checking the l-SID in the l-TAG.
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Avery
8 months ago
I’m leaning towards D because it mentions checking the multicast B-DA, which seems relevant for forwarding multicast traffic.
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Lindy
8 months ago
I’m a bit confused about the difference between l-SID and l-TAG in this context. Could it be A instead of B?
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Odette
8 months ago
I remember practicing a question similar to this, and I feel like it had to do with checking the l-TAG for local VPLS.
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Maryrose
8 months ago
I think the answer might be B, but I'm not entirely sure if it's the l-SID or l-TAG that gets checked first.
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Tennie
8 months ago
Ah, I see now. The key is to identify the unique capabilities of each model. I'll compare the details provided in the options to determine the true statement.
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Claribel
8 months ago
I'm feeling a bit lost on this one. The wording about "sendable data extension" and "relates to" is throwing me off. I'll need to re-read the question and options carefully.
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Heidy
8 months ago
This seems like a straightforward question, I think the answer is B - Reinstall a second Cisco Unified CCX node and add it to the cluster over WAN.
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