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Confluent CCDAK Exam - Topic 1 Question 18 Discussion

A kafka topic has a replication factor of 3 and min.insync.replicas setting of 2. How many brokers can go down before a producer with acks=1 can't produce?
D) 2
A) 0
B) 3
C) 1

Confluent CCDAK Exam - Topic 1 Question 18 Discussion

Actual exam question for Confluent's CCDAK exam
Question #: 18
Topic #: 1
[All CCDAK Questions]

A kafka topic has a replication factor of 3 and min.insync.replicas setting of 2. How many brokers can go down before a producer with acks=1 can't produce?

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Suggested Answer: D

min.insync.replicas does not impact producers when acks=1 (only when acks=all)


by Aja at May 09, 2022, 04:28 PM

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Verona
8 months ago
Makes sense, but I didn't realize it was that strict!
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Nida
9 months ago
Nope, it's definitely 1. You need at least 2 in sync.
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Aliza
9 months ago
Wait, are you sure? I thought it was 2.
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Gerri
9 months ago
Totally agree, it’s all about the min.insync.replicas!
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Eun
9 months ago
The answer is 1 broker can go down.
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Chauncey
9 months ago
I’m confused about the acks=1 setting. Does that mean we can only afford to lose 1 broker? I thought it was more complicated than that.
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Leanna
9 months ago
This feels similar to a practice question we did on broker failures. I think we can lose 1 broker and still have enough replicas in sync.
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Moon
9 months ago
I'm not entirely sure, but I remember something about needing at least 2 brokers up for the min.insync.replicas. So maybe it's 2 brokers down?
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Aide
9 months ago
I think if the replication factor is 3 and min.insync.replicas is 2, then we can lose 1 broker and still produce, right?
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Adelina
9 months ago
I'm a bit confused by some of these terms like "NOP sled technique" and "heap-based security." I'll need to do a quick refresh on those concepts before answering.
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Cristal
9 months ago
Liquidity risk, for sure. That's the risk that the investment won't be easily convertible to cash without taking a big hit on the price. I feel pretty good about this one.
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Olive
9 months ago
Hmm, this seems like a tricky one. I'll need to carefully read through the details and think about the different options.
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Grover
10 months ago
Okay, let me see here. I'm pretty sure it's not that the MDU doesn't need to support MPLS, since that's not really a benefit. I'm leaning towards the answer about not needing a layer 2 loop prevention protocol.
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