Nokia 4A0-112 Exam - Topic 1 Question 1 Discussion

Actual exam question for Nokia's 4A0-112 exam

Question #: 1
Topic #: 1

A series of actions are triggered on a router as a result of enabling both loopfree-alternate for a link-state routing protocol and ip-fast-reroute. Which of the following is NOT one of those actions?

ACalculating the shortest-path next hop for each known IP prefix.

BCalculating a backup next hop for each known IP prefix, if it exists, that would not create a routing loop if used without informing other routers.

CInstalling two entries in the FIB for IP prefixes, one active and one in standby mode.

DEnabling the router to locally repair the active path to an IP prefix in case of failure.

Show Suggested Answer

Suggested Answer: A

by Catherin at Jan 27, 2025, 11:34 AM

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Kris

3 months ago

I thought they all sounded right, but A is the odd one out.

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Gretchen

3 months ago

B is what I thought too, but it makes sense.

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Ellsworth

3 months ago

Wait, are we sure about D? That sounds important.

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Samira

4 months ago

I agree, C seems off too.

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Royce

4 months ago

A is definitely not one of those actions.

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Penney

4 months ago

Enabling local repairs seems like a key feature, but I can't recall if it directly relates to the actions listed here.

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Rebecka

4 months ago

I practiced a similar question last week, and I feel like calculating the backup next hop is definitely part of the process.

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Fidelia

4 months ago

I think option C sounds familiar, like it might not be something that happens with ip-fast-reroute.

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Leota

5 months ago

I remember studying loop-free alternate, but I'm not entirely sure about the specific actions it triggers.

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Celia

5 months ago

I think the key here is to focus on the "NOT" part of the question. That means we need to identify the action that is not triggered by enabling those features. Option C seems the most likely candidate.

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Viva

5 months ago

I'm a bit unsure about this one. The options all seem plausible, but I'll need to review my understanding of how these features work to determine the right answer.

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Crissy

5 months ago

I'm pretty confident that the correct answer is A. Calculating the shortest-path next hop is a fundamental routing function, not something that would be triggered by those specific features.

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Leonora

5 months ago

Okay, let's see. I know that ip-fast-reroute is about providing fast local repair, so that's probably not the answer. The other options seem more related to the core functionality.

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Myong

5 months ago

Hmm, this is a tricky one. I'll need to think carefully about the actions triggered by enabling both loopfree-alternate and ip-fast-reroute.

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Francesco

1 year ago

I think the answer is B, because it doesn't involve installing entries in the FIB.

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Krystal

1 year ago

Wait, so they're asking us what's NOT done? That's like a double negative, right? My head hurts just thinking about it!

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Trinidad

1 year ago

This is a tricky one. I'm going to have to do some more research on IP-FRR before I can be confident in my answer.

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Judy

1 year ago

I think B is the correct answer. Calculating a backup next hop without informing other routers would be a security risk.

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Josephine

11 months ago

Actually, D is the correct answer. Enabling the router to locally repair the active path is a key feature of loopfree-alternate and ip-fast-reroute.

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Kristel

11 months ago

I believe C is the correct answer. Installing two entries in the FIB for IP prefixes makes sense for redundancy.

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Brendan

11 months ago

I agree, A seems like a standard procedure for routing protocols.

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Desmond

12 months ago

I think A is the correct answer. Calculating the shortest-path next hop is a common action.

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Marget

1 year ago

I'm not sure, but I think it might be A.

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King

1 year ago

D sounds like the obvious answer to me. Enabling local repair is a key feature of IP-FRR, not something that's not done.

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Colene

1 year ago

I disagree, I believe the answer is D.

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Nu

1 year ago

Hmm, I'm not sure about C. Isn't that a bit excessive to have two FIB entries per prefix?

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Noel

11 months ago

Yeah, having two FIB entries per prefix does seem excessive.

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Paris

11 months ago

D) Enabling the router to locally repair the active path to an IP prefix in case of failure.

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Stephanie

12 months ago

B) Calculating a backup next hop for each known IP prefix, if it exists, that would not create a routing loop if used without informing other routers.

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Gwenn

12 months ago

A) Calculating the shortest-path next hop for each known IP prefix.

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Gaynell

1 year ago

I think the answer is C.

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