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Nokia 4A0-105 Exam - Topic 7 Question 118 Discussion

Actual exam question for Nokia's 4A0-105 exam
Question #: 118
Topic #: 7
[All 4A0-105 Questions]

What is the name of the feature supported on the Alcatel-Lucent 7750 SR that prevents MAC explosion in large VPLS deployments?

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Suggested Answer: C

by Oretha at Nov 24, 2025, 07:40 PM

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Charlie
18 hours ago
It's H-VPLS for sure!
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Rex
6 days ago
B) M-VPLS? More like M-VPLS (Mess-VPLS), if you ask me.
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Avery
11 days ago
A) H-VPLS? More like H-VPLS (Headache-VPLS), am I right?
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Garry
16 days ago
D) MC-EP is the way to go. Keeps those MACs in check, you know?
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Sharika
21 days ago
C) PBB is the correct answer. It prevents MAC explosion in large VPLS deployments.
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Jannette
27 days ago
MC-EP sounds familiar, but I can't recall its exact function. I feel like I need to review the differences between these options again.
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Portia
1 month ago
I’m leaning towards PBB, but I’m not confident. I know it relates to bridging, but I can’t connect it to VPLS directly.
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Dottie
1 month ago
I recall studying M-VPLS, but I can't remember if that was specifically for MAC explosion prevention. It feels like a similar question we practiced.
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Lashawna
1 month ago
I think it might be H-VPLS, but I'm not entirely sure. I remember it had something to do with hierarchical structures.
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Heike
2 months ago
Ah yes, I remember this now! It's C) PBB, the Provider Backbone Bridging feature. That's the one that helps prevent MAC address table explosion in large VPLS deployments. Feeling good about that answer.
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Kimbery
2 months ago
Okay, let me see. I remember learning about this in class. I think it's D) MC-EP, but I'm not 100% confident. Gonna go with that for now.
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Joseph
2 months ago
Ugh, I'm drawing a blank on this. VPLS and MAC explosion - I know there's a feature for that, but I can't remember the name. Guess I'll have to take a guess.
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Audrie
3 months ago
C) PBB - the "Prevent Broadcast Blowup" feature. Gotta love those Alcatel-Lucent acronyms!
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Ronald
3 months ago
M-VPLS is good, but H-VPLS is more specific for this.
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Jovita
3 months ago
Hmm, I'm not totally sure about this one. I'll have to think it through carefully. Maybe I can eliminate some of the options first.
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Elenora
3 months ago
I think I know this one - it's C) PBB, right? That's the feature that helps with MAC scaling in VPLS.
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Heike
2 months ago
B) M-VPLS is also a contender, but PBB seems more fitting.
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Ahmad
2 months ago
I agree with C) PBB. It makes sense for MAC scaling.
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Valentin
2 months ago
I thought it was A) H-VPLS.
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