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Nokia 4A0-104 Exam - Topic 4 Question 99 Discussion

Which of the following conditions are necessary in order for service labels to be signaled between two PE routers? (Choose 3)
A) LDP must be enabled on both PE routers. and D) The VC-ID must match between the two PE routers in both directions. and E) The transport tunnel must be operationally up between the two PE routers in both directions.
B) RSVP must be enabled on both PE routers.
C) Traffic engineering must be enabled in the IGP.
F) The SDP ID must match between the two PE routers in both directions.

Nokia 4A0-104 Exam - Topic 4 Question 99 Discussion

Actual exam question for Nokia's 4A0-104 exam
Question #: 99
Topic #: 4
[All 4A0-104 Questions]

Which of the following conditions are necessary in order for service labels to be signaled between two PE routers? (Choose 3)

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Suggested Answer: A, D, E

by Cory at Jun 13, 2025, 12:22 AM

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Clorinda
7 months ago
Definitely, the transport tunnel has to be up!
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Benton
7 months ago
The VC-ID matching is a must!
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Kelvin
7 months ago
LDP needs to be enabled for sure!
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Kirk
8 months ago
I think RSVP is not necessary, right?
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Filiberto
8 months ago
Wait, do both PE routers really need the SDP ID to match?
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Frederica
8 months ago
I'm a bit confused about RSVP; I thought it was more for traffic engineering rather than just label signaling.
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Lashaunda
8 months ago
I practiced a similar question where the transport tunnel had to be operational, so I'm leaning towards that being important too.
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Emmanuel
8 months ago
I think the VC-ID matching is definitely one of the conditions, but I can't recall if the SDP ID is also necessary.
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Hollis
9 months ago
I remember something about LDP being crucial for label signaling, but I'm not entirely sure if it's the only requirement.
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Wilda
9 months ago
Hmm, let me see. I think the key is understanding the relationship between the control plane protocols, the transport tunnels, and the service identifiers. Gotta make sure I don't miss any of the critical pieces.
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Wynell
9 months ago
This is a good one. I'll need to draw on my knowledge of MPLS and VPNs to figure out the right combination of conditions. Gotta be careful not to overthink it.
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Dorothy
9 months ago
Alright, time to put on my MPLS thinking cap. I'll need to make sure I understand the differences between the options and which ones are truly necessary for signaling service labels.
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Linette
9 months ago
Okay, let me see here. I know LDP and RSVP are both important for MPLS, so I'll need to check if those are required. The transport tunnel and VC-ID also seem relevant.
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Sage
9 months ago
Hmm, this looks like a tricky MPLS question. I'll need to carefully review the options and think through the requirements for signaling service labels between PE routers.
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Linn
12 months ago
I'm pretty sure the SDP ID doesn't matter here. This is about MPLS, not some underwater submarine network, right? Let's focus on the real deal.
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Lenny
12 months ago
I bet the exam writer is just sitting back and laughing at us scratching our heads. But hey, at least we're not the ones who have to come up with these tricky questions!
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Veronika
10 months ago
E) The transport tunnel must be operationally up between the two PE routers in both directions.
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Selene
11 months ago
C) Traffic engineering must be enabled in the IGP.
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Nada
11 months ago
A) LDP must be enabled on both PE routers.
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Kati
12 months ago
Whoa, hold up! Looks like we need RSVP too. Can't forget about that traffic engineering, am I right? This exam is trying to trip us up!
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Sylvie
10 months ago
E) The transport tunnel must be operationally up between the two PE routers in both directions.
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Temeka
11 months ago
C) Traffic engineering must be enabled in the IGP.
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Hyun
11 months ago
A) LDP must be enabled on both PE routers.
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Bambi
1 year ago
Hmm, I think A, D, and E are the correct conditions. LDP, matching VC-ID, and an operational transport tunnel are essential for signaling service labels between PE routers.
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Ashley
11 months ago
Yes, those conditions ensure the proper signaling between PE routers.
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Cordelia
11 months ago
I agree, A, D, and E are necessary for signaling service labels.
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Galen
1 year ago
I believe B, C, and F are also important. RSVP, traffic engineering, and matching SDP ID play a role.
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Alease
1 year ago
I agree with Alaine. LDP, matching VC-ID, and operational transport tunnel are key.
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Alaine
1 year ago
I think A, D, and E are necessary for service labels to be signaled.
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