Nokia 4A0-103 Exam - Topic 3 Question 118 Discussion

Actual exam question for Nokia's 4A0-103 exam

Question #: 118
Topic #: 3

Click on the exhibit button below. Assume the following:

- The protected path is R1-R2-R3-R6.

- Fast reroute one-to-one protection is enabled.

If the original LSP already has two labels, and router R2 has failed, how many labels will there be in packets on the detour path?

Show Suggested Answer

Suggested Answer: B

by Carisa at Nov 24, 2025, 12:21 AM

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Carylon

8 days ago

Totally agree, it’s definitely 3 labels!

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Sophia

13 days ago

Wait, how do we get 3? That seems off.

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Myong

19 days ago

The answer is definitely B) 2 labels. Unless, of course, it's not. In which case, I'm blaming the caffeine withdrawal.

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Devora

24 days ago

This question is a real head-scratcher. I'm going to need a label maker and a magnifying glass to figure this one out.

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Catalina

29 days ago

I bet the answer is D) 4 labels. You know, just to keep us on our toes.

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Gilma

1 month ago

Ah, the good old label-stacking game. I wonder if the exam proctors will let us use a label maker during the test.

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Salena

1 month ago

The answer is C) 3 labels. The original LSP has two labels, and with fast reroute one-to-one protection, an additional label will be added for the detour path.

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Nichelle

1 month ago

I’m confused about how the labels work in this scenario. I thought the detour would just use the existing labels, but I might be wrong.

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Carmen

2 months ago

This question seems similar to one we did in practice where we had to count labels after a failure. I think it might be 3 labels total.

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Lenna

2 months ago

I remember something about fast reroute and how it adds labels, but I can't recall if it adds one or two more.

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Brice

2 months ago

I think the detour path will still have the original labels, so maybe it’s 2? But I’m not entirely sure.

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Luz

2 months ago

I think I've got it. The original LSP has two labels, and the detour path will add one more label. So the total number of labels will be 3. C) is the right answer.

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