Nokia 4A0-105 Exam - Topic 3 Question 74 Discussion

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

Question #: 74
Topic #: 3

Click on the exhibit below.

In the diagram below, SAP 1 is put into the blocking state as a result of the spanning tree protocol. What will occur in the VPLS instance if SAP 2 goes down and SAP 1 transitions to the forwarding state? Select the most accurate statement.

AA Spanning Tree BPDU will be sent across the mesh flushing the FDB table in all devices participating in the VPLS instance.

BStale information will be used within the VPLS instance to forward traffic until the FDB ages out.

CAn LDP control message will be sent to all devices in the mesh participating in the VPLS instance. Only MAC addresses associated with the PE that the failure occurred on will be flushed.

DAn LDP control message will be sent to all devices in the mesh participating in the VPLS instance. The entire FDB in the VPLS instance will be flushed.

Show Suggested Answer

Suggested Answer: D

by Fletcher at Aug 28, 2023, 03:12 PM

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Melda

3 months ago

I remember this from class, definitely a tricky situation!

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Detra

3 months ago

Option D sounds too extreme for just one SAP going down.

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Marsha

4 months ago

Wait, are we sure about that? Seems risky!

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Cherry

4 months ago

Totally agree, stale info is a common issue.

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Svetlana

4 months ago

I think option B makes the most sense.

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Delsie

4 months ago

I'm leaning towards option D because it mentions flushing the entire FDB, which seems like the right action when a significant change occurs in the VPLS instance.

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Azzie

4 months ago

I feel like option C could be right since it talks about LDP control messages, but I can't recall if it only flushes MAC addresses for the affected PE or the whole FDB.

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Pearlene

5 months ago

I think I've seen a similar question where stale information was mentioned. It might be that traffic continues to use old data until it times out.

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Ashanti

5 months ago

I remember something about how the spanning tree protocol manages states, but I'm not sure if it sends a BPDU when a SAP goes down.

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Earleen

5 months ago

This seems like a good opportunity to apply my knowledge of VPLS and spanning tree protocols. I'll carefully consider each option and think through the likely network behavior.

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Jenelle

5 months ago

I'm a bit confused by the details here. The question is asking about a specific scenario, and I want to make sure I fully understand the implications before selecting an answer.

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Ernie

5 months ago

Okay, let's see. If SAP 1 transitions to forwarding, that could impact the FDB, but I'm not sure exactly how. I'll have to review the options closely.

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Latia

5 months ago

Hmm, this looks like a tricky VPLS question. I'll need to think through the spanning tree and FDB implications carefully.

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Kara

5 months ago

Ah, I think I know this one. The key is understanding how the spanning tree and VPLS FDB interact when a SAP goes down. I'm feeling pretty confident about this.

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Portia

5 months ago

Okay, I've got a strategy in mind. I'll focus on standardizing the data first, then use Duplicate Management to avoid any issues.

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Eleonore

5 months ago

This is a good opportunity to apply my knowledge of external tables and data movement. I'll carefully consider each option and select the three that are most relevant to the ORACLE_DATAPUMP driver.

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