Nokia Exam 4A0-108 Topic 1 Question 98 Discussion

Actual exam question for Nokia's 4A0-108 exam

Question #: 98
Topic #: 1

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

AThe 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.

BPIM does not work in an asymmetric topology, therefore there is no RPF check at all.

CThere is no impact, since the Shared and Source Path Trees are built from the receiver to the source.

DThere is not enough information provided here to answer the question.

Show Suggested Answer

Suggested Answer: C

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

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An

17 days 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

18 days 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

20 days 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

9 days 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

1 months 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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Mayra

1 months ago

Hmm, that's an interesting point. I see where you're coming from.

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2 months 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

1 months 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 months 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 months ago

I think the answer is A. The PIM RPF check may fail in an asymmetric IGP routing topology.

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