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Nokia 4A0-108 Exam - Topic 1 Question 98 Discussion

What impact does an asymmetric IGP routing topology have on the PIM RPF check?
C) There is no impact, since the Shared and Source Path Trees are built from the receiver to the source.
A) The PIM RPF check may fail, since traffic from the source may arrive on one interface, while the IP route to the source may point to another interface on the PIM router.
B) PIM does not work in an asymmetric topology, therefore there is no RPF check at all.
D) There is not enough information provided here to answer the question.

Nokia 4A0-108 Exam - Topic 1 Question 98 Discussion

Actual exam question for Nokia's 4A0-108 exam
Question #: 98
Topic #: 1
[All 4A0-108 Questions]

What impact does an asymmetric IGP routing topology have on the PIM RPF check?

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Suggested Answer: C

by Reuben at Sep 15, 2024, 12:49 AM

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Howard
9 months ago
Yeah, A makes sense. Routing inconsistencies can mess things up.
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Gertude
9 months ago
D seems like a cop-out. We can analyze this better!
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Emily
10 months ago
Wait, C sounds off. How can there be no impact?
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Taryn
10 months ago
I disagree, B is too extreme. PIM can still function.
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Carey
10 months ago
A is correct, RPF can definitely fail in asymmetric topologies.
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Bette
10 months ago
I’m confused about this one. Option B seems too absolute, but I’m not sure if the RPF check is completely bypassed in asymmetric setups.
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Derrick
11 months ago
I feel like I saw a practice question about this, and it mentioned that the RPF check could fail in asymmetric scenarios. So, option A seems likely.
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Desmond
11 months ago
I'm not entirely sure, but I think PIM can still work with asymmetric topologies. Maybe option C is the right choice?
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Jettie
11 months ago
I remember studying that asymmetric routing can cause issues with the PIM RPF check, so I think option A might be correct.
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Dion
11 months ago
I'm not sure about this one. I'll need to consider how PIM builds the shared and source trees in relation to the routing topology.
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Shawna
11 months ago
Okay, I think I know the answer to this one. The PIM RPF check may fail in an asymmetric topology since the traffic could arrive on a different interface than the route points to.
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Maybelle
11 months ago
Hmm, I'm a bit confused by this question. I'll need to review my notes on PIM and asymmetric routing to figure this out.
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Alaine
11 months ago
This is a tricky one. I'll need to think carefully about the impact of asymmetric routing on the PIM RPF check.
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An
2 years ago
Wait, so the PIM RPF check is like trying to play 'Pin the Tail on the Donkey' in the dark? That's rough. *laughs*
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Layla
2 years ago
This question is a real head-scratcher. I bet the exam writer was trying to trip us up with that asymmetric topology bit. *chuckles*
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Carmelina
2 years ago
B) PIM not working in an asymmetric topology? That's news to me. I thought PIM was designed to handle all sorts of routing setups.
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Levi
2 years ago
A) The PIM RPF check may fail, since traffic from the source may arrive on one interface, while the IP route to the source may point to another interface on the PIM router.
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Kristine
2 years ago
B) PIM not working in an asymmetric topology? That's news to me. I thought PIM was designed to handle all sorts of routing setups.
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Effie
2 years ago
A) The PIM RPF check may fail, since traffic from the source may arrive on one interface, while the IP route to the source may point to another interface on the PIM router.
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Luke
2 years ago
D) I agree, there isn't enough information to determine the impact. We'd need more details about the specific topology and routing configuration.
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Lashandra
2 years ago
D) I agree, there isn't enough information to determine the impact. We'd need more details about the specific topology and routing configuration.
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Gaynell
2 years ago
A) The PIM RPF check may fail, since traffic from the source may arrive on one interface, while the IP route to the source may point to another interface on the PIM router.
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Mayra
2 years ago
Hmm, that's an interesting point. I see where you're coming from.
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Larae
2 years ago
C) I don't think that's correct. The Shared and Source Path Trees are built from the source to the receiver, so an asymmetric topology would impact the RPF check.
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Brandon
2 years ago
A) That's true, the RPF check relies on the correct path from the source to the receiver.
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Kami
2 years ago
C) I disagree, the RPF check is affected by an asymmetric IGP routing topology.
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Reid
2 years ago
A) The PIM RPF check may fail, since traffic from the source may arrive on one interface, while the IP route to the source may point to another interface on the PIM router.
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Clarinda
2 years ago
I disagree, I believe the answer is C. The Shared and Source Path Trees are built from the receiver to the source.
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Dianne
2 years ago
A) Definitely, the PIM RPF check can fail in an asymmetric topology. That's a classic issue we've seen in the field.
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Fabiola
2 years ago
B) There is no impact, since the Shared and Source Path Trees are built from the receiver to the source.
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Dana
2 years ago
A) The PIM RPF check may fail, since traffic from the source may arrive on one interface, while the IP route to the source may point to another interface on the PIM router.
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Mayra
2 years ago
I think the answer is A. The PIM RPF check may fail in an asymmetric IGP routing topology.
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