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Nokia 4A0-105 Exam - Topic 1 Question 90 Discussion

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

Question #: 90
Topic #: 1

[All 4A0-105 Questions]

What action will be taken when an MPLS router receives a frame with a label that does not exist in the LFIB?

AThe frame will be flooded.

BThe frame will be discarded.

CThe frame will be fragmented.

Show Suggested Answer

Suggested Answer: B

by Stephane at Jun 22, 2024, 11:44 AM

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Dallas

7 months ago

Definitely discarded, no LFIB entry means no forwarding!

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Cherry

8 months ago

I thought it would be flooded, not discarded.

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Camellia

8 months ago

Wait, are you sure about that?

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Carli

8 months ago

Totally agree, that's how MPLS works!

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Merri

8 months ago

The frame will be discarded.

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Xuan

8 months ago

Fragmentation seems off for this scenario. I think it’s either flooding or discarding, but I’m leaning towards discarding.

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Candida

9 months ago

I feel like this is similar to a question we did in class, and the answer was definitely about discarding the frame.

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Laurel

9 months ago

I'm not entirely sure, but I remember something about flooding in a different context. Could that apply here?

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Annice

9 months ago

I think if the label isn't in the LFIB, the router just discards the frame, right? That seems to be what we practiced.

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Jovita

9 months ago

Okay, let me walk through this step-by-step. If the MPLS router can't find the label in its LFIB, it won't be able to forward the frame properly. So the logical action would be to discard the frame to avoid any issues. I'm feeling good about B as the answer.

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Michael

9 months ago

Hmm, I'm not totally sure about this. I think the frame might get flooded, but I'm not 100% certain. I'll have to think it through carefully.

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Shannon

9 months ago

I'm pretty confident I know the answer to this one. MPLS routers discard frames with unknown labels to avoid forwarding them incorrectly.

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Howard

9 months ago

I'm a bit confused on this one. Is there a possibility the frame could get fragmented? I'll have to review my MPLS notes to make sure I understand the proper behavior in this scenario.

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Corazon

9 months ago

The undo feature and the adjustable user interface seem like the best options for error tolerance. I'll choose those.

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Nakita

9 months ago

I practiced a similar question where encryption was linked to protecting data from attackers, so A seems likely to me.

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Carole

2 years ago

B) The frame will be discarded. Yep, that's the way to go. No need to waste resources on a frame that's got a non-existent label.

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Regenia

2 years ago

B) The frame will be discarded. Yep, that's the way to go. No need to waste resources on a frame that's got a non-existent label.

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Kimberely

2 years ago

B) The frame will be discarded. Yep, that's the way to go. No need to waste resources on a frame that's got a non-existent label.

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Sherell

2 years ago

A) The frame will be discarded.

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Delisa

2 years ago

A) The frame will be discarded.

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Rochell

2 years ago

A) The frame will be flooded? Haha, that's a good one! Flooding an MPLS network? Next thing you know, they'll be asking us to route frames using carrier pigeons.

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Kimi

2 years ago

A) Yeah, flooding would be a disaster in an MPLS network.

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Aleisha

2 years ago

B) The frame will be discarded.

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Merissa

2 years ago

C) The frame will be fragmented? Really? Fragmentation in an MPLS network? I think the exam writer needs to brush up on their MPLS knowledge.

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Dierdre

2 years ago

I think the frame will be fragmented to try and match the label.

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Christiane

2 years ago

B) The frame will be discarded. That's the correct answer, right? I mean, who wants to flood the network with a frame that doesn't even have a valid label?

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Kasandra

2 years ago

It's important to follow the proper protocol to avoid any network issues.

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Amie

2 years ago

Exactly, discarding the frame helps maintain network efficiency.

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Filiberto

2 years ago

Flooded frames can cause unnecessary traffic and fragmentation is not necessary.

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Robt

2 years ago

Yes, that's correct. Discarding the frame is the best option in that case.

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Lenna

2 years ago

I believe the frame will be flooded to find the correct path.

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Jordan

2 years ago

I agree with Jerry, it makes sense to discard it.

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Jerry

2 years ago

I think the frame will be discarded.

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