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Nokia Exam 4A0-112 Topic 2 Question 2 Discussion

Actual exam question for Nokia's 4A0-112 exam
Question #: 2
Topic #: 2
[All 4A0-112 Questions]

When using IS-IS in native mode for routing in a dual-stack IPv4/IPv6 environment, which of the following statements is FALSE?

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Suggested Answer: C

In a dual-stack IPv4/IPv6 IS-IS environment, the SPF (Shortest Path First) algorithm is only run once per router for each protocol (IPv4 or IPv6). The topology is shared, but the SPF calculations for IPv4 and IPv6 are separate. This means that the SPF algorithm will run twice (once for IPv4 and once for IPv6) for each L1/L2 router, not four times.


by Gregoria at Jan 25, 2025, 06:06 PM

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Beckie
1 months ago
I think the answer is B because the same topology information is used for both IPv4 and IPv6.
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Loren
1 months ago
I'm not sure, but I think the answer is A.
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Ronnie
1 months ago
I disagree, I believe the answer is D.
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Milly
2 months ago
I got a headache just reading this question. Maybe I should've stuck to IPv4-only networks, where things are much simpler.
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Elliot
2 months ago
Woah, this is some next-level stuff! I'm just hoping I don't accidentally end up in an IPv6 black hole during the exam.
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Charlena
1 months ago
User 2: Yeah, you definitely don't want to end up in a traffic black hole.
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Delmy
2 months ago
User 1: Don't worry, just remember to properly design your network.
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Jospeh
2 months ago
Option D sounds the most plausible. Improper design can definitely lead to traffic black-holing in a dual-stack environment.
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Barrett
2 months ago
This question is a real brainteaser! I'm not sure if I agree with any of the answer choices. Maybe they're all false?
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Anna
2 months ago
User 2: I agree, all links are assumed to be IPv4- and IPv6-capable.
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Rosio
2 months ago
User 1: I think option A is true, not false.
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Jina
2 months ago
I think option C is false. The SPF algorithm needs to be run only twice, once for IPv4 and once for IPv6.
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Deja
1 months ago
C) In a multi-area environment, the SPF algorithm needs to be run four times on each L1/L2 router.
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Sherill
1 months ago
B) The same topology information is used to calculate the shortest path tree for both IPv4 and IPv6.
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Gracia
2 months ago
A) All links are assumed to be IPv4- and IPv6-capable.
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Luis
2 months ago
I think the answer is C.
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