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Nokia 4A0-112 Exam - Topic 3 Question 28 Discussion

When multiple routing protocols offer a route for the same prefix, what part of the router is in charge of deciding which route to make active?
B) The routing table manager (RTM)
A) The routing information base (RIB)
C) The equal cost multipath configuration
D) The forwarding information base (FIB)

Nokia 4A0-112 Exam - Topic 3 Question 28 Discussion

Actual exam question for Nokia's 4A0-112 exam
Question #: 28
Topic #: 3
[All 4A0-112 Questions]

When multiple routing protocols offer a route for the same prefix, what part of the router is in charge of deciding which route to make active?

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Suggested Answer: B

The routing table manager (RTM) is responsible for selecting the best route when multiple routing protocols provide a route for the same destination prefix. It makes the decision on which route to add to the routing table based on the administrative distance, metric, and other criteria.


by Abel at Jul 01, 2026, 11:41 PM

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Launa
17 hours ago
I think it's B) The routing table manager (RTM). It makes sense.
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Vanda
6 days ago
This is tricky!
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Eulah
11 days ago
Exactly, the decision comes from the RIB or RTM.
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Michael
16 days ago
FIB is for forwarding, not decision-making.
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Noah
21 days ago
I lean towards D) The forwarding information base (FIB). It’s about active routes.
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Vanda
27 days ago
True, but the RIB is where the routes are stored first.
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Eulah
1 month ago
But the RTM decides which route to use, right?
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Michael
1 month ago
I disagree, I believe it's A) The routing information base (RIB). It holds all the routes.
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Vanda
1 month ago
I think it's B) The routing table manager (RTM). It makes sense.
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Lanie
2 months ago
Surprised this is even a question, it's pretty basic stuff!
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Linwood
2 months ago
I always thought it was the FIB, but I guess not!
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Helene
2 months ago
Wait, I thought it was the RIB that handled this?
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Shawna
2 months ago
Definitely B, can't believe people get this wrong.
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Ressie
2 months ago
It's the routing table manager (RTM) that decides!
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Karina
2 months ago
I recall a question similar to this where we discussed how the RIB and RTM interact. I think the RIB is the one that decides which route to use.
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Tarra
3 months ago
I’m a bit confused. I thought the forwarding information base (FIB) was more about actual packet forwarding rather than route selection.
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Bernardo
3 months ago
I feel like the routing information base (RIB) is involved in this process. It makes sense since it holds all the routing info, right?
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Dierdre
3 months ago
I think it's the routing table manager (RTM), but I'm not completely sure. I remember something about it from our last practice exam.
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