Nokia Exam 4A0-105 Topic 6 Question 85 Discussion

Actual exam question for Nokia's 4A0-105 exam

Question #: 85
Topic #: 6

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

AThe receiving PE checks the l-TAG in the l-SID to determine if there is a local l-VPLS on the node.

BThe receiving PE checks the l-SID in the l-TAG to determine if there is a local l-VPLS on the node.

CThe receiving PE checks the service label in the mpls header to determine if there is a local l-VPLS on the node.

DThe 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.

Show Suggested Answer

Suggested Answer: D

by Hyun at Apr 22, 2024, 02:41 PM

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Arminda

8 months ago

But D talks about multicast B-DA, which may not apply to unknown-unicast traffic.

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Dalene

8 months ago

I'm not so sure, I think the answer might be D.

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Jerilyn

8 months ago

I agree with because the receiving PE checks the l-SID in the l-TAG to determine if there is a local l-VPLS on the node.

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Arminda

9 months ago

I think the answer is B.

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Tora

9 months ago

Yes, it plays a key role in forwarding traffic between B-VPLS and l-VPLS.

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Marshall

9 months ago

So, the l-SID is crucial in this process?

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Thea

9 months ago

The receiving PE checks the l-SID in the l-TAG to determine if there is a local l-VPLS on the node.

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Frankie

9 months ago

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

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