Huawei Exam H12-221 Topic 2 Question 92 Discussion

Actual exam question for Huawei's H12-221 exam

Question #: 92
Topic #: 2

RTA is a source's DR and RTB is an RP. A multicast source sends multicast data to RTA but RTB cannot find any information about the multicast source (registered by using the PIM Register message). Why? (Select 3 answers)

ARTB has no unicast routes to RTA,

BRTA fails to learn RP information.

CRTA has no unicast routes to RTB.

DThe RPlearned by RTA is not RTB.

Show Suggested Answer

Suggested Answer: B, C, D

by Barney at Jul 11, 2024, 01:44 PM

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Chu

4 months ago

I think both A) and D) could be correct, but I'm not sure about the third option.

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Shoshana

5 months ago

I disagree, I believe the answer is D) The RP learned by RTA is not RTB.

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Barrie

5 months ago

The way I see it, the key here is that RTA and RTB need to be able to communicate with each other for the PIM Register message to work. If RTA can't learn the RP info, or if RTB doesn't have the right unicast routes, then it's just not going to happen.

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Skye

5 months ago

Ha, this reminds me of that time I had to troubleshoot a multicast issue, and it turned out the problem was that the IT guy had accidentally unplugged the coffee machine. You never know what's going to cause these things!

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Shannan

4 months ago

D) The RP learned by RTA is not RTB

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Tarra

4 months ago

B) RTA fails to learn RP information

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Caren

4 months ago

A) RTB has no unicast routes to RTA

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Julianna

5 months ago

I think the answer is A) RTB has no unicast routes to RTA.

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Nenita

5 months ago

Hmm, I'm not sure about that. What if RTB has no unicast routes to RTA? That could definitely be a problem in terms of the PIM Register message getting through.

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Cherelle

5 months ago

I'm thinking it's probably because the RP learned by RTA is not the same as RTB. That would explain why RTB can't find any info about the source.

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Sharee

5 months ago

Okay, so if the multicast source is sending data to RTA, but RTB can't find any info about the source, it sounds like there's an issue with the PIM Register message. Could it be that RTA has no unicast routes to RTB?

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