Confluent CCAAK Exam - Topic 4 Question 18 Discussion

Actual exam question for Confluent's CCAAK exam

Question #: 18
Topic #: 4

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?

AIf the new Producer is configured to use compression.

BNever, because topic t1 already has uncompressed messages.

COnly if Kafka is also enabled for encryption.

DOnly if the new Producer disables batching.

Show Suggested 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 Jackie at Apr 13, 2026, 02:21 AM

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