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Nokia 4A0-116 Exam - Topic 8 Question 14 Discussion

An SR-TE LSP with a path definition that includes router R4 as a loose hop and for which Seamless-BFD has been enabled is following the path shown in the exhibit. What happens after router R4 fails if the routers along the path follow the default behavior?
D) The head end will continue forwarding traffic to the current next-hop indefinitely, and R2 will redirect the traffic to R3 after IGP reconvergence.
A) The head end will periodically try to calculate a new path at a rate defined by the retry timer.
B) The head end will periodically try to calculate a new path at a rate defined by the resignal timer.
C) The head end will continue forwarding traffic to the current next-hop indefinitely, which will be discarded at the point of failure.

Nokia 4A0-116 Exam - Topic 8 Question 14 Discussion

Actual exam question for Nokia's 4A0-116 exam
Question #: 14
Topic #: 8
[All 4A0-116 Questions]

An SR-TE LSP with a path definition that includes router R4 as a loose hop and for which Seamless-BFD has been enabled is following the path shown in the exhibit. What happens after router R4 fails if the routers along the path follow the default behavior?

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Suggested Answer: D

by Iluminada at Aug 08, 2023, 01:23 PM

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Avery
6 months ago
The retry timer is definitely involved here.
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Jaime
7 months ago
Wait, so it just discards traffic? That sounds odd.
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Rebecka
7 months ago
No way, it has to be option D!
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Eloisa
7 months ago
I think it’s option C, right?
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Freeman
7 months ago
The head end will keep sending traffic to the next-hop.
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Tarra
8 months ago
I believe the head end keeps forwarding traffic indefinitely, but I’m not clear on whether R2 would redirect it after IGP reconvergence. That part is fuzzy for me.
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Sage
8 months ago
I’m a bit confused about the behavior after R4 fails. I thought the head end would stop forwarding traffic, but maybe it continues until something else happens?
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Micaela
8 months ago
This question seems similar to one we practiced where a loose hop was involved. I feel like the head end might just keep forwarding traffic until it figures out a new path.
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Jennifer
8 months ago
I think I remember that when a loose hop fails, the head end tries to recalculate the path, but I'm not sure if it's the retry or resignal timer that defines the rate.
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Ashleigh
8 months ago
This one seems pretty straightforward. The question is asking about the type of waste that was eliminated by rearranging the parts inventory. I think the answer is Motion, since the repair person doesn't have to move as far to reach the parts they need.
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Quiana
8 months ago
I'm pretty confident the answer is B, check_alternate. That sounds like the default policy based on what I've learned.
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Eveline
8 months ago
Hmm, I'm a bit confused. Is it really that simple? I feel like there might be more to it than just updating a field.
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Sol
8 months ago
This question seems to be testing our understanding of capability and capacity analysis in portfolio management processes. I think the key is to focus on how this analysis is used specifically in developing the portfolio charter and structure.
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Wai
8 months ago
Hmm, I'm a bit unsure about this one. I know dashboards are used to present data, but I'm not sure what the other options like "Subjective Measures" and "Valid Measures" are referring to. I'll have to think this through carefully.
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Pauline
1 year ago
Ah, the joys of routing protocols and path calculations. If only we could all just forward traffic to the nearest dumpster fire and call it a day. But alas, the network gods demand more from us.
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Adelaide
11 months ago
B) The head end will periodically try to calculate a new path at a rate defined by the resignal timer.
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Sommer
12 months ago
C) The head end will continue forwarding traffic to the current next-hop indefinitely, which will be discarded at the point of failure.
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Jacki
1 year ago
A) The head end will periodically try to calculate a new path at a rate defined by the retry timer.
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Desmond
1 year ago
This is a tricky one, but I think B is the correct answer. The question mentions Seamless-BFD, so the head end will likely try to recalculate the path at a rate defined by the resignal timer. I hope I'm right, or else I'll need to resign myself to a poor score on this exam.
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Cammy
1 year ago
User1: Hopefully we're right, otherwise we might need to study this topic more for the exam.
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Erasmo
1 year ago
User2: I agree, Seamless-BFD will trigger the head end to try to find a new path after R4 fails.
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Howard
1 year ago
User1: I think B is the correct answer too. The head end will recalculate the path at a rate defined by the resignal timer.
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Daniel
1 year ago
I'm going with C. The head end will continue forwarding traffic to the current next-hop indefinitely, which will be discarded at the point of failure. It's the simplest and most straightforward option.
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Hildred
1 year ago
But if R4 fails, the head end will continue forwarding traffic to the current next-hop indefinitely, and R2 will redirect the traffic to R3 after IGP reconvergence, so I think D makes more sense.
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Charisse
1 year ago
I'm pretty sure the answer is D. The head end will continue forwarding traffic to the current next-hop indefinitely, and R2 will redirect the traffic to R3 after IGP reconvergence. That makes the most sense to me.
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Idella
1 year ago
I'm pretty sure the answer is D. The head end will continue forwarding traffic to the current next-hop indefinitely, and R2 will redirect the traffic to R3 after IGP reconvergence.
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Refugia
1 year ago
Actually, I think it's B. The head end will periodically try to calculate a new path at a rate defined by the resignal timer.
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Sanda
1 year ago
I disagree, I believe the answer is C. The head end will continue forwarding traffic to the current next-hop indefinitely, which will be discarded at the point of failure.
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Gregg
1 year ago
I think the answer is A. The head end will periodically try to calculate a new path at a rate defined by the retry timer.
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Marshall
1 year ago
The answer is B, the head end will periodically try to calculate a new path at a rate defined by the resignal timer. This is because the question mentions that the path definition includes a loose hop, so the head end will need to recalculate the path after the failure of R4.
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Yolando
1 year ago
I disagree, I believe the correct answer is D.
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Hildred
1 year ago
I think the answer is C.
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