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Cisco 300-420 Exam - Topic 5 Question 84 Discussion

In a multicast network, which condition must be met for an RPF check to be performed on the RP address'?
B) The PIM router or multilayer switch has a shared-tree state
A) The PIM DM device receives a multicast packet and has no directly connected members
C) The PIM router or multilayer switch has a source-tree state
D) The PIM DM device receives a multicast packet and has no directly connected PIM neighbor

Cisco 300-420 Exam - Topic 5 Question 84 Discussion

Actual exam question for Cisco's 300-420 exam
Question #: 84
Topic #: 5
[All 300-420 Questions]

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

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Suggested Answer: B

by Arlene at Mar 21, 2024, 02:48 AM

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Zack
9 months ago
B is correct, RPF checks need that shared-tree!
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Esteban
9 months ago
Wait, are we sure about D? That seems off.
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Fallon
10 months ago
C is the right answer, no doubt about it!
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Claudio
10 months ago
I thought it was A, but B makes more sense.
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Tracie
10 months ago
It's definitely B, shared-tree state is key.
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Virgie
10 months ago
I’m leaning towards option B, but I also remember something about needing a multicast packet to trigger the RPF check. It's a bit confusing!
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Madonna
11 months ago
I feel like the source-tree state might be important for this question, but I can't recall the specifics of how it ties into the RPF check.
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Simona
11 months ago
I remember practicing a question about RPF checks, and I think it was about having no directly connected members. Could that be relevant here?
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Glendora
11 months ago
I think the RPF check is related to the shared-tree state, but I'm not entirely sure if that's the only condition.
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Nobuko
11 months ago
B sounds right to me. The RPF check is done on the RP address when the PIM device is using the shared-tree model.
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Sharita
11 months ago
I'm pretty confident the answer is B. The RPF check is performed on the RP address when the PIM router is in shared-tree state.
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Jannette
11 months ago
Wait, I'm not sure about this. Let me re-read the question and options again.
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Ashlee
11 months ago
Okay, I think I know the answer. It's B - the PIM router or multilayer switch has a shared-tree state.
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Berry
11 months ago
Hmm, this one seems tricky. I'll need to think it through carefully.
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Tambra
11 months ago
I'm a bit confused by this question. Does it mean the maximum number of printers that can receive the alerts, or the maximum number that can actually print them?
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Allene
11 months ago
Okay, I've got a strategy for this. I'll carefully read through each option and think about the different types of changes that can be made in Decision Center. That should help me identify the right answer.
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Alesia
11 months ago
Okay, let's see. I know ISO/IEC 27001 and 27002 are information security standards, but they're not necessarily required by law. Intellectual property rights are important, but not specifically related to information security. I'm going to go with D - personal data protection legislation.
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Wilda
11 months ago
Ah, I see. The step-by-step definition of a business process is also a key part of the service inventory analysis. I'll mark that one down.
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Maira
2 years ago
I think Beatriz is correct. A) The PIM DM device receives a multicast packet and has no directly connected members is the condition that must be met for an RPF check to be performed on the RP address.
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Beatriz
2 years ago
I see your point, Ilda. But I still think A is the right answer because in a multicast network, the RPF check is used to prevent loops.
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Ilda
2 years ago
I'm leaning towards option B) The PIM router or multilayer switch has a shared-tree state. It seems to make more sense to me.
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Maira
2 years ago
I disagree, I believe the answer is D) The PIM DM device receives a multicast packet and has no directly connected PIM neighbor.
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Beatriz
2 years ago
I think the answer is A) The PIM DM device receives a multicast packet and has no directly connected members.
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Craig
2 years ago
I'm not sure about the answer, but I think it might be C) because the RPF check is based on the source-tree state of the PIM router.
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Frank
2 years ago
I disagree, I believe the answer is D) because the RPF check is done when there are no directly connected PIM neighbors.
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Adell
2 years ago
I think the answer is A) because the RPF check is performed when there are no directly connected members receiving the multicast packet.
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Noel
2 years ago
I'm pretty sure the answer is B. The PIM router or multilayer switch needs to have a shared-tree state for the RPF check on the RP address to be performed. That makes sense to me.
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Lelia
2 years ago
That's a good point, I see where you're coming from. So the correct answer must be C - The PIM router or multilayer switch has a source-tree state.
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Tomas
2 years ago
C
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Chandra
2 years ago
I disagree, I believe it is A. The PIM DM device must receive a multicast packet with no directly connected members.
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Mona
2 years ago
I think it's actually D. The PIM DM device needs to receive a multicast packet with no directly connected PIM neighbor for the RPF check to happen.
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Kayleigh
2 years ago
B
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Stephaine
2 years ago
Ah, I see. The question is specifically asking about the condition for an RPF check on the RP address, not the source. That changes things a bit.
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Rima
2 years ago
Yes, that's a good point. The shared-tree state means the router is using the RP as the root of the multicast distribution tree, so the RPF check on the RP address would be necessary.
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Tammi
2 years ago
Yeah, that would be a pretty strange condition. I'm glad the actual answer seems to be B. It makes the most logical sense in the context of multicast routing.
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