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Nokia 4A0-112 Exam - Topic 1 Question 5 Discussion

Consider the exhibit.All routers are running IS-IS with IPv6 support enabled. Based on the topology shown, and the route tables of routers R3 and R4, which of the following statements is TRUE?
D) Route leaking is configured on both routers R1 and R2.
A) There is no route leaking configured on router R1 or router R2.
B) Route leaking is configured on router R1 but not on router R2.
C) Route leaking is configured on router R2 but not on router R1.

Nokia 4A0-112 Exam - Topic 1 Question 5 Discussion

Actual exam question for Nokia's 4A0-112 exam
Question #: 5
Topic #: 1
[All 4A0-112 Questions]

Consider the exhibit.

All routers are running IS-IS with IPv6 support enabled. Based on the topology shown, and the route tables of routers R3 and R4, which of the following statements is TRUE?

Show Suggested Answer Hide Answer
Suggested Answer: D

Based on the IPv6 route table output for R3 and R4, we can see that the routers have remote routes listed as 'Remote ISIS', indicating that the route is being advertised from a different area (area 49.01 or 49.02). This is a sign of route leaking, where routes from one area are being shared across areas.

The routes from R3 (level-1 router) are being advertised to R4 (level-1 router), and vice versa, with ISIS as the protocol. This implies that there is route leaking configured to allow information to pass between areas.


by Malcolm at Jan 25, 2025, 10:41 AM

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Jamie
9 months ago
C makes sense to me, R2 is where the leaking is happening.
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Hector
9 months ago
Wait, how can we be sure about R1 and R2? Seems sketchy.
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Buck
10 months ago
I disagree, I believe it's A. No leaking at all!
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Tatum
10 months ago
Definitely B, R1 has route leaking for sure.
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Julio
10 months ago
I think route leaking is not configured on R1 or R2.
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Jesusa
10 months ago
I vaguely remember that route leaking can be tricky, especially with IS-IS. I need to think about how R1 and R2 interact in this case.
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Denny
11 months ago
I feel like option A could be correct since it mentions no route leaking, but I’m hesitant because I might be mixing it up with another scenario.
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Benton
11 months ago
I think I practiced a similar question where we had to identify route leaking, but I can't recall the exact details for R1 and R2 here.
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Apolonia
11 months ago
I remember studying route leaking, but I’m not entirely sure how it applies to this specific topology.
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Malcolm
11 months ago
I think I've got a good strategy here. I'll start by looking at the topology and identifying the key routers and connections. Then I'll analyze the route tables to see if I can spot any signs of route leaking.
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Wilda
11 months ago
I'm a bit confused by the route tables mentioned in the question. I'll need to make sure I understand what information they're providing and how to interpret it.
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Allene
11 months ago
Okay, let me think this through step-by-step. The question is asking about route leaking, so I'll need to understand how that works in an IS-IS network with IPv6 support.
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Filiberto
11 months ago
Hmm, this looks like a tricky one. I'll need to carefully analyze the topology and the route tables to figure out which statement is true.
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Virgilio
2 years ago
Ha! This is like a game of 'Spot the Router Leak'. I bet the correct answer is hidden in plain sight.
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Glory
1 year ago
I agree, it seems like the most logical choice based on the topology and route tables.
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Glory
2 years ago
I think the correct answer is option D) Route leaking is configured on both routers R1 and R2.
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Leonora
2 years ago
This question is a real brainteaser! I'm going to have to study the route tables more closely before I can decide.
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Vashti
1 year ago
I see your point, but I still think the answer is D) Route leaking is configured on both routers R1 and R2.
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Berry
1 year ago
Actually, I think the answer is B) Route leaking is configured on router R1 but not on router R2.
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Iola
2 years ago
I disagree, I believe the answer is A) There is no route leaking configured on router R1 or router R2.
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Bo
2 years ago
I think the answer is D) Route leaking is configured on both routers R1 and R2.
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Werner
2 years ago
Because both routers R1 and R2 have route leaking configured based on the exhibit.
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Charlene
2 years ago
Why do you think it's D?
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Silvana
2 years ago
Okay, let's see... Based on the information provided, I think option D is the right answer. Route leaking on both R1 and R2 would make sense for this setup.
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Sheridan
2 years ago
Yes, having route leaking configured on both routers would ensure proper connectivity in this scenario.
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Dana
2 years ago
I agree, option D seems to be the most logical choice.
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Werner
2 years ago
I disagree, I believe the answer is D.
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Avery
2 years ago
Hmm, the topology seems straightforward, but I'm not sure about the correct answer. I'll have to think this through carefully.
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Vincenza
2 years ago
Yes, it's clear from the exhibit that route leaking is enabled on both R1 and R2.
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Carmela
2 years ago
I agree, the route tables of R3 and R4 indicate that route leaking is configured on both routers.
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Graham
2 years ago
I think the correct answer is D) Route leaking is configured on both routers R1 and R2.
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Charlene
2 years ago
I think the answer is A.
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