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Nokia 4A0-105 Exam - Topic 5 Question 121 Discussion

Actual exam question for Nokia's 4A0-105 exam
Question #: 121
Topic #: 5
[All 4A0-105 Questions]

A router has just learned the 10th MAC address while the FDB size is also set to 10. What is the likely outcome?

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Suggested Answer: C

by Allene at Jan 28, 2026, 06:23 PM

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Portia
5 days ago
The router will start dropping the oldest MAC address.
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Carline
10 days ago
I bet the router is like, "Sorry, no more room at the MAC address inn!"
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Rutha
15 days ago
Hmm, this sounds like a classic MAC address table overflow scenario. Time to upgrade that FDB size!
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Jesusita
20 days ago
Looks like we have a full FDB and the router will need to start evicting entries to make room for new ones.
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Laquita
25 days ago
The router will likely start overwriting the oldest MAC address entries in the FDB.
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Stephaine
1 month ago
I feel like I read that once the limit is hit, it could either drop new addresses or start flooding. Need to double-check that!
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Jenelle
1 month ago
This sounds similar to a practice question I did where the FDB overflowed. I think it leads to inefficient switching.
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Jesusita
2 months ago
I'm not entirely sure, but I remember something about the FDB being full causing it to flood traffic. Could that be it?
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Meghan
2 months ago
I think when the FDB reaches its limit, it might start dropping the oldest MAC addresses to make room for new ones, right?
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Devon
2 months ago
Alright, time to put on my thinking cap. With a full FDB and a new MAC address learned, the router is probably going to have to make some tough decisions. I'll need to consider the different ways this could play out.
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Kristine
2 months ago
Ah, I think I know what's going on here. The router's forwarding database is limited to 10 entries, and it just hit that limit. I'll need to think about how the router might handle that situation.
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Alishia
3 months ago
Okay, let me see here. If the FDB is full and a new MAC address comes in, the router will likely have to start evicting older entries. I'll need to analyze the potential consequences of that.
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Goldie
3 months ago
Uh oh, if the FDB size is set to 10 and the router just learned the 10th MAC address, that's probably not good. I'll need to consider what might happen.
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Leonora
3 months ago
Hmm, this seems like a classic MAC address table overflow scenario. I'll need to think through the potential outcomes carefully.
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