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Huawei H12-821_V1.0 Exam - Topic 3 Question 85 Discussion

Actual exam question for Huawei's H12-821_V1.0 exam
Question #: 85
Topic #: 3
[All H12-821_V1.0 Questions]

Which of the following statements about BFD operating modes are true?

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Suggested Answer: A, C, D

In asynchronous mode, BFD control packets are exchanged periodically to detect faults.

In demand mode, once the session is established, BFD stops sending periodic control packets and relies on external mechanisms to verify connectivity.

Asynchronous mode is the most commonly used mode. However, the Echo function is supported in asynchronous mode, making Option B incorrect .


by Delsie at Jul 08, 2025, 04:01 PM

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Susy
2 months ago
Asynchronous mode definitely sends packets, so C is true.
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Sharee
2 months ago
Wait, I thought D was just a preference, not the primary mode?
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Lizbeth
2 months ago
Totally agree, C is spot on!
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Maybelle
3 months ago
A is false, B is true.
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Josefa
3 months ago
BFD Control packets are crucial, can't believe some think otherwise!
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Amie
3 months ago
D seems like a safe bet since I recall that asynchronous mode is often mentioned as the default or primary mode in BFD discussions.
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Johna
3 months ago
C sounds right to me; I remember that in asynchronous mode, they do exchange packets regularly to check the connection.
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Carol
4 months ago
I feel like I saw a question about asynchronous mode and the Echo function, but I can't quite recall if it really doesn't support it.
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Micaela
4 months ago
I think A is tricky because I remember something about demand mode not sending packets unless there's a change.
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Carol
4 months ago
This is a good test of my BFD knowledge. I'll use the process of elimination to narrow down the options and select the right answers.
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Twanna
4 months ago
The wording of these options is a bit tricky. I'll need to think through the details of each mode to make sure I understand them correctly.
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Magnolia
4 months ago
Okay, I remember learning about BFD in class. I'm pretty confident I can identify the true statements here.
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Erick
5 months ago
Hmm, I'm a bit confused about the differences between the modes. Let me re-read the question carefully and think through each option.
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Precious
5 months ago
This looks like a straightforward question about BFD operating modes. I think I can handle this one.
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