Nokia 4A0-116 Exam - Topic 1 Question 48 Discussion

Actual exam question for Nokia's 4A0-116 exam

Question #: 48
Topic #: 1

Which of the following is NOT a valid option to steer traffic into a flex-algo segment-routing tunnel?

AUsing a flex-algo Node-SID as an explicit hop in the path definition of an SR-TE LSP and enabling the sr-te tunnel type for a VPN service.

BSpecifying the flex-algo instance ID as an additional TE constraint for an SR-TE LSP and enabling the sr-te tunnel type for a VPN service.

CConfiguring and applying a VRF import policy to a VPRN service and enabling the sr-is-is or sr-ospf tunnel type for the service, depending on the underlying routing protocol.

DConfiguring and applying a VSI import policy to an EVPN service and enabling the sr-is-is or sr-ospf tunnel type for the service, depending on the underlying routing protocol.

Show Suggested Answer

Suggested Answer: D

The data is transparently carried from end to end: This statement is not true, MPLS does not provide data transparency, which means that the data is not carried unmodified from end to end. MPLS uses labels to forward data, so the original IP packets are encapsulated in new MPLS packets, and the original IP headers are not visible at the egress LSR.

by Rolf at Feb 08, 2025, 06:39 AM

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Tiffiny

3 months ago

Totally agree with C being the wrong choice!

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Carisa

3 months ago

Wait, can you really use a flex-algo Node-SID like that? Sounds weird!

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Willetta

3 months ago

D seems a bit off too, not sure about that one.

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Margarita

4 months ago

I think C is the odd one out here.

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Dalene

4 months ago

A and B are valid options for sure!

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Shawnta

4 months ago

I recall that EVPN services use VSI import policies, so option D might be valid. But I'm confused about how that relates to flex-algo.

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Boris

4 months ago

I think option C sounds off because it mentions a VRF import policy, which doesn't seem to relate directly to flex-algo.

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Van

4 months ago

I feel like I saw a similar question about SR-TE LSPs and flex-algo constraints. I think options A and B are valid, but I'm unsure about C and D.

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Terry

5 months ago

I remember studying flex-algo, but I'm not entirely sure which option doesn't fit. I think it might be related to the tunnel types.

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Janae

5 months ago

The key here is to focus on the specific requirements for steering traffic into a flex-algo segment-routing tunnel. Options A, B, and D seem to be the valid approaches, so C must be the one that's not valid.

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Aide

5 months ago

Hmm, I'm a bit confused by the wording of the options. I need to re-read them carefully to make sure I don't miss any subtle differences.

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Elin

5 months ago

I'm pretty confident I know the answer to this one. Option C looks like the odd one out since it's talking about VRF and VPRN, which don't seem relevant to the flex-algo segment-routing tunnel setup.

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Reuben

5 months ago

This question seems straightforward, but I want to make sure I understand the concepts correctly before answering.

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Maurine

10 months ago

Wait, are we sure this question isn't written by a bunch of flex-algo enthusiasts trying to trick us? I bet the answer is actually 'all of the above' just to keep us on our toes!

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Sarah

9 months ago

C) Configuring and applying a VRF import policy to a VPRN service and enabling the sr-is-is or sr-ospf tunnel type for the service, depending on the underlying routing protocol.

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Monte

9 months ago

B) Specifying the flex-algo instance ID as an additional TE constraint for an SR-TE LSP and enabling the sr-te tunnel type for a VPN service.

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Mary

9 months ago

C) Configuring and applying a VRF import policy to a VPRN service and enabling the sr-is-is or sr-ospf tunnel type for the service, depending on the underlying routing protocol.

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Tora

9 months ago

B) Specifying the flex-algo instance ID as an additional TE constraint for an SR-TE LSP and enabling the sr-te tunnel type for a VPN service.

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Carlee

9 months ago

A) Using a flex-algo Node-SID as an explicit hop in the path definition of an SR-TE LSP and enabling the sr-te tunnel type for a VPN service.

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Francisca

9 months ago

A) Using a flex-algo Node-SID as an explicit hop in the path definition of an SR-TE LSP and enabling the sr-te tunnel type for a VPN service.

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Mollie

10 months ago

Hmm, this is a tricky one. I'm going to have to think about it a bit more, but my initial instinct is that A is the correct answer.

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Lacey

10 months ago

I'm pretty sure B is the right choice. Specifying the flex-algo instance ID as a TE constraint for an SR-TE LSP is a valid way to steer traffic into a flex-algo segment-routing tunnel.

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Margurite

10 months ago

User 2: Yeah, that's a valid option to steer traffic into a flex-algo segment-routing tunnel.

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Marsha

10 months ago

User 1: I think B is correct too. It makes sense to specify the flex-algo instance ID as a TE constraint for an SR-TE LSP.

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Elenora

10 months ago

You're right, I overlooked that detail. Option D seems to be the one that is not a valid option.

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Omega

11 months ago

I disagree, option C is valid because it specifies enabling sr-is-is or sr-ospf tunnel type for the service.

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Aleta

11 months ago

Option C seems to be the correct answer here. Configuring a VRF import policy and enabling the sr-is-is or sr-ospf tunnel type is not a valid way to steer traffic into a flex-algo segment-routing tunnel.

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Veronika

10 months ago

D) Configuring and applying a VSI import policy to an EVPN service and enabling the sr-is-is or sr-ospf tunnel type for the service, depending on the underlying routing protocol.

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Rashida

10 months ago

C) Configuring and applying a VRF import policy to a VPRN service and enabling the sr-is-is or sr-ospf tunnel type for the service, depending on the underlying routing protocol.

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