Kafka Interview Questions - Practice Questions with Answers and Scoring
Practice Kafka interview questions with an interactive experience designed for real-world preparation. Attempt curated questions, reveal clear explanations, and track your performance with instant scoring.
Top Kafka Interview Questions for Freshers and Experienced
40 Questions
2 Pages
Easy · Medium · Hard
Page 2 of 2
1
What is a consumer group in Kafka?
easy
consumer-groupbasics
2
How does Kafka rebalance consumers?
medium
rebalanceconsumer
3
What causes frequent rebalancing?
hard
rebalancedebugging
4
How would you improve Kafka consumer performance?
medium
performanceconsumer
5
What is log compaction?
medium
log-compactionstorage
6
How does Kafka guarantee high availability?
medium
availabilityreplication
7
What is the role of acknowledgments in Kafka producer?
medium
produceracks
8
How does batching improve Kafka performance?
medium
performancebatching
9
What happens when a Kafka broker goes down?
medium
brokerfailure
10
What is producer retry mechanism?
medium
producerretries
11
How would you secure a Kafka cluster?
hard
securityauthentication
12
What is the difference between Kafka and traditional message queues?
medium
architecturecomparison
13
How does Kafka handle large messages?
hard
performancemessages
14
What is a Kafka topic?
easy
topicbasics
15
How does Kafka handle message compression?
medium
compressionperformance
16
What is the role of fetch.min.bytes in consumers?
hard
consumerperformance
17
How does Kafka handle duplicate messages?
medium
duplicatesidempotence
18
What is transactional messaging in Kafka?
hard
transactionsexactly-once
19
How does Kafka ensure data consistency?
medium
consistencyreplication
20
What are common causes of Kafka performance degradation?
hard
performancedebugging
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