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Confluent CCAAK Exam - Topic 3 Question 13 Discussion

Actual exam question for Confluent's CCAAK exam
Question #: 13
Topic #: 3
[All CCAAK Questions]

You have a cluster with a topic t1 that already has uncompressed messages. A new Producer starts sending messages to t1 with compression enabled.

Which condition would allow this?

Show Suggested Answer Hide Answer
Suggested Answer: A

Kafka allows mixed compression formats within the same topic and even the same partition. Each message batch includes metadata indicating whether and how it is compressed. Therefore, a new producer can send compressed messages to a topic that already contains uncompressed messages, as long as it is configured with a compression codec (e.g., compression.type=gzip, snappy, etc.).


by Kimberlie at Nov 23, 2025, 11:57 PM

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Renay
10 hours ago
Totally agree with A! Compression can be enabled anytime.
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Geraldine
6 days ago
A) If the new Producer is configured to use compression.
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Jesus
11 days ago
D) Only if the new Producer disables batching. Gotta love those tricky Kafka questions!
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Eulah
16 days ago
A) If the new Producer is configured to use compression. Easy peasy!
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Annmarie
21 days ago
This question is a real head-scratcher. I'm going to need a strong cup of coffee to figure this one out.
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Nieves
26 days ago
B) Never, because topic t1 already has uncompressed messages.
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Cecily
1 month ago
I don't recall anything about batching affecting compression directly, so D seems off too. I guess A is the best bet here.
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Lili
1 month ago
I'm not so sure about that. I remember a practice question saying that once a topic has uncompressed messages, you can't mix them with compressed ones. So maybe it's B?
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Kayleigh
1 month ago
I think the answer might be A, since the new Producer can just be configured to use compression regardless of the existing messages.
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Juliann
2 months ago
I'm pretty confident the answer is A. As long as the new Producer is set up for compression, it should work with the existing topic.
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Luis
2 months ago
Ugh, I'm not sure about this one. The wording around the existing uncompressed messages has me stumped.
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Lashon
2 months ago
Okay, I think I got this. The key is that the new Producer needs to be configured for compression, right?
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Jesusa
2 months ago
I think it's A. Compression can be configured anytime.
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Leslie
2 months ago
A) If the new Producer is configured to use compression.
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Johnathon
3 months ago
I feel like I read something about compression and encryption being separate concerns, so C seems unlikely. But I could be wrong.
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Giuseppe
3 months ago
I disagree, B makes sense. Uncompressed messages can't mix.
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Rossana
3 months ago
I'm a bit confused on the compression and existing message requirements. Let me re-read the question closely.
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Lonna
3 months ago
Hmm, this seems tricky. I'll need to think through the compression and batching options carefully.
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Devora
2 months ago
I think it’s A. The new Producer can use compression.
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