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Apache Kafka Objective Questions and Answers

Test your skills with Apache Kafka objective questions with answers and detailed explanations. Covers Kafka architecture, producers, consumers, partitions, offsets, transactions, exactly-once semantics, and performance tuning.

This Apache Kafka quiz contains carefully curated objective questions with correct answers and clear explanations. It is designed for developers, data engineers, and interview preparation, covering Kafka internals, distributed messaging concepts, fault tolerance, and real-time streaming best practices.

Practice Apache Kafka MCQs with Detailed Explanations

Answer at least 12 questions to submit.

16
What is KRaft mode in Kafka?
High
17
Which configuration controls message durability?
Medium
18
What does acks=all mean?
High
19
Which API is used for stream processing in Kafka?
Medium
20
What is Kafka Connect used for?
Medium
21
Which partitioner decides message distribution?
High
22
What is log compaction?
High
23
Which retention policy deletes messages after time?
Medium
24
What happens when retention.ms expires?
Medium
25
What is the default partitioner behavior without a key?
High
26
Which metric indicates consumer lag?
Medium
27
What is a rebalance in Kafka?
High
28
What causes frequent rebalances?
High
29
Which serializer converts objects to bytes?
Medium
30
What is the role of deserializer?
Medium
Answered: 0 / 15

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