Discuss Nokia 4A0-116 Exam Topic 3 Question 15

The exhibit shows the fast re-route configuration on router R1, in which both R-LFA and TI-LFA have been enabled. Assume that there are multiple potential backup paths for a given prefix. Which of the following options will router R1 use?

AA standard LFA path that would not coincide with the path after IGP re-convergence.

BAn R-LFA path that would not coincide with the path after IGP re-convergence.

CA D-LFA path that would not coincide with the path after IGP re-convergence.

DA D-LFA path that would coincide with the path after IGP re-convergence.

Suggested Answer: D

The exhibit shows that both R-LFA and TI-LFA have been enabled on router R1. R-LFA (Remote Loop-Free Alternate) is a method that is used to protect the active segment of a tunnel, and it allows the router to find a backup path that coincides with the path that will become active after IGP reconvergence. TI-LFA (Topology Independent LFA) is a method that is used to protect an end-to-end multi-segment tunnel, it allows the router to find a backup path that does not rely on the IGP topology, but on the segment routing topology.

With R-LFA and TI-LFA enabled, router R1 will use a D-LFA (Dual-Loop-Free Alternate) path, which is a combination of both R-LFA and TI-LFA, this path will coincide with the path after IGP re-convergence.

A standard LFA, R-LFA, and D-LFA which do not coincide with the path after IGP re-convergence are not the options.

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20 comments · newest first

Dominga 11 months ago

I didn't realize R-LFA was prioritized like that! Surprising!

Ernie 11 months ago

Wait, are we sure about that? I thought D was a possibility.

Christene 11 months ago

I think A could work too, but not as efficiently.

Brittni 12 months ago

Definitely B! R-LFA is the way to go here.

Pamella 12 months ago

R1 will prefer R-LFA paths over standard LFAs.

Verdell 1 year ago

I vaguely remember that D-LFA paths are more complex. I think they might coincide with the IGP re-convergence, but I’m not clear on the specifics.

Allene 1 year ago

I practiced a similar question where R-LFA was preferred over standard LFA. I feel like option B could be the answer, but I’m not 100% confident.

Inocencia 1 year ago

I’m not entirely sure, but I think D-LFA paths are used for different scenarios. I need to recall if they coincide with IGP re-convergence or not.

Raymon 1 year ago

I remember studying R-LFA and how it’s supposed to provide better protection than standard LFA paths. I think it might be the right choice here.

Kindra 1 year ago

I've got a good understanding of R-LFA and TI-LFA, so I feel confident I can work through this step-by-step and arrive at the right answer.

Suzan 1 year ago

Hmm, I think the key here is whether the backup path would coincide with the path after IGP re-convergence. That's an important distinction to consider.

Sabra 1 year ago

I'm a bit confused by the terminology here. What's the difference between a standard LFA path and an R-LFA path? I'll need to review my notes on these fast re-route mechanisms.

Laurel 1 year ago

Okay, let's see. The question is asking which backup path R1 will use, and it mentions multiple potential backup paths. I'll need to think through the differences between the options.

Cristy 1 year ago

Hmm, this looks like a tricky one. I'll need to carefully consider the options and the implications of R-LFA and TI-LFA being enabled.

Larae 1 year ago

This question seems to be asking about the different aspects of learning that an instructor can address. I think the key is to focus on the "multiple means of action and expression" part, which suggests it's addressing the 'how' of learning.

Levi 1 year ago

Option D seems like the most flexible approach, allowing me to define the age bucket logic directly in the dashboard. That way I can easily adjust the grouping if the requirements change.

Valentin 1 year ago

Hmm, I'm a bit confused by the YANG module. I'll need to review the syntax and structure more closely to figure out which XML instance is valid.

Edgar 1 year ago

This seems like a straightforward question about increasing supply chain resilience. I'd focus on identifying the key actions the company could take.

Tracey 1 year ago

This is a tricky one. I'm a bit confused about the wording of the question. I'll need to re-read it a few times to make sure I understand what they're asking.

Wenona 1 year ago

Okay, I think I've got this. Based on the variable names and the API calls, I believe option B is the right answer here. It creates a new Webex Teams space and adds the users in the `user_list` variable to that space.

Nokia 4A0-116 Exam - Topic 3 Question 15 Discussion