Cisco Exam 300-420 Topic 7 Question 91 Discussion

Actual exam question for Cisco's 300-420 exam

Question #: 91
Topic #: 7

[All 300-420 Questions]

In a multicast network, which condition must be met for an RPF check to be performed on the RP address'?

AThe PIM DM device receives a multicast packet and has no directly connected members

BThe PIM router or multilayer switch has a shared-tree state

CThe PIM router or multilayer switch has a source-tree state

DThe PIM DM device receives a multicast packet and has no directly connected PIM neighbor

Show Suggested Answer

Suggested Answer: B

by My at Jun 19, 2024, 09:29 AM

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Timothy

3 months ago

You might be right, I'll reconsider my answer.

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Cherrie

3 months ago

But doesn't RPF check require a shared-tree state to be performed?

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Brandon

3 months ago

I'm leaning towards option B as well. The shared-tree state seems to be the key factor here, and the RPF check on the RP address makes sense in that context.

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Roy

2 months ago

Yes, having a shared-tree state is crucial for the RPF check to be performed on the RP address.

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Jimmie

2 months ago

I agree, option B is the correct choice for RPF check on the RP address.

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3 months ago

Hmm, I'm not sure about this one. The question is a bit tricky, but I think option C might be the correct answer. The source-tree state seems like the more relevant condition for the RPF check.

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Ira

2 months ago

Actually, I believe the correct answer is option D. The RPF check is performed when the PIM DM device receives a multicast packet and has no directly connected PIM neighbor.

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Elinore

2 months ago

I think option C is correct too. Source-tree state makes sense for the RPF check.

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Royce

3 months ago

I agree with Carol. The RPF check is a crucial step in multicast routing, and it makes sense that it would be done on the RP address in a shared-tree scenario.

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Carol

3 months ago

Option B seems like the most logical choice here. The RPF check is performed on the RP address when the PIM router or switch is in a shared-tree state.

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Valene

3 months ago

Yes, when the PIM router or switch has a shared-tree state, the RPF check is necessary.

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Marya

3 months ago

I agree, option B is the correct choice for RPF check on the RP address.

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