Confluent Exam CCDAK Topic 3 Question 78 Discussion

Actual exam question for Confluent's CCDAK exam

Question #: 78
Topic #: 3

Suppose you have 6 brokers and you decide to create a topic with 10 partitions and a replication factor of 3. The brokers 0 and 1 are on rack A, the brokers 2 and 3 are on rack B, and the brokers 4 and 5 are on rack C. If the leader for partition 0 is on broker 4, and the first replica is on broker 2, which broker can host the last replica? (select two)

Show Suggested Answer

Suggested Answer: B, E

When you create a new topic, partitions replicas are spreads across racks to maintain availability. Hence, the Rack A, which currently does not hold the topic partition, will be selected for the last replica

by Teddy at May 02, 2025, 10:44 PM

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Monroe

10 days ago

Hmm, this question is making my brain hurt. Maybe I should have had one more cup of coffee before the exam. But hey, at least it's not as bad as the time I accidentally put my answer sheet through the shredder. Good times, good times...

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Carmen

11 days ago

Oh, this is a good one! I bet the answer is going to be something super obvious that I totally overlooked. Let me reread the question and see if I can figure this out... Aha! Got it. C) 2 and F) 3 are the correct answers. Nailed it!

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Clorinda

12 days ago

This is a classic Kafka partition placement question. Let's think through the constraints. We can't have multiple replicas on the same rack, and the leader has to be on a different broker than the first replica. That leaves brokers 3, 5, and 0 as the viable options for the last replica. Time to mark my answer!

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Florencia

13 days ago

Alright, I think I've got it. Brokers 0 and 1 are on rack A, so they're not eligible. Brokers 2 and 3 are on rack B, and we already have a replica on broker 2. That leaves brokers 4, 5, and 3 as potential options for the last replica. I'll go with C) 2 and F) 3.

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Alex

17 days ago

Okay, let's think this through. The topic has 10 partitions, and the replication factor is 3. So, we need to find two brokers that can host the last replica for partition 0, given that the leader is on broker 4 and the first replica is on broker 2. Hmm, this is a tricky one.

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