Apache Kafka MCQ Questions with answers and solutions Page 5

Q. What type of storage does Kafka use to persist data?

(A) RAM
(B) MySQL database
(C) Log files on disk
(D) Cloud storage

💬 Discuss

✅ Correct Answer: (C) Log files on disk

Explanation: Kafka stores messages as append-only logs in disk files.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 10:59 am in Apache Kafka

Q. Which property controls the maximum number of records returned in one poll?

(A) max.poll.records
(B) max.partition.fetch.bytes
(C) batch.size
(D) fetch.min.bytes

💬 Discuss

✅ Correct Answer: (A) max.poll.records

Explanation: The 'max.poll.records' setting controls how many messages are returned in a poll.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 10:59 am in Apache Kafka

Q. How does Kafka handle backpressure?

(A) By slowing down producers
(B) By buffering messages in memory
(C) By using message compression
(D) By rejecting new producers

💬 Discuss

✅ Correct Answer: (B) By buffering messages in memory

Explanation: Kafka handles backpressure by buffering messages before consumers process them.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 10:59 am in Apache Kafka

Q. Kafka messages are assigned which type of identifier?

(A) UUID
(B) Offset
(C) Index
(D) Label

💬 Discuss

✅ Correct Answer: (B) Offset

Explanation: Each message in Kafka is assigned a unique offset within its partition.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 10:59 am in Apache Kafka

Q. What happens if Kafka’s disk becomes full?

(A) Messages are stored in memory
(B) Kafka stops accepting new messages
(C) Old messages are deleted immediately
(D) Consumers are blocked

💬 Discuss

✅ Correct Answer: (B) Kafka stops accepting new messages

Explanation: Kafka will stop accepting new messages if disk space runs out.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 10:59 am in Apache Kafka

Q. How does Kafka scale horizontally?

(A) By increasing consumer buffer size
(B) By adding more partitions and brokers
(C) By upgrading JVM
(D) By compressing log files

💬 Discuss

✅ Correct Answer: (B) By adding more partitions and brokers

Explanation: Kafka scales horizontally by increasing the number of partitions and brokers.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 10:59 am in Apache Kafka

Q. Kafka topic replication improves:

(A) Data redundancy and fault tolerance
(B) Producer speed
(C) Consumer load
(D) ZooKeeper performance

💬 Discuss

✅ Correct Answer: (A) Data redundancy and fault tolerance

Explanation: Replication ensures that even if a broker fails, data is not lost.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 10:59 am in Apache Kafka

Q. Kafka can be used as a replacement for:

(A) File system
(B) Database
(C) Message queue system
(D) FTP server

💬 Discuss

✅ Correct Answer: (C) Message queue system

Explanation: Kafka is designed as a high-throughput message queue system.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 10:59 am in Apache Kafka

Q. Which command lists all available Kafka topics?

(A) kafka-run-class.sh
(B) kafka-topics.sh --list
(C) kafka-console-consumer.sh --describe
(D) kafka-log-dirs.sh --status

💬 Discuss

✅ Correct Answer: (B) kafka-topics.sh --list

Explanation: 'kafka-topics.sh --list' shows all current topics in the Kafka cluster.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 10:59 am in Apache Kafka

Q. Kafka’s primary design goal is:

(A) Low latency and file compression
(B) High throughput and fault tolerance
(C) Database indexing
(D) Static content serving

💬 Discuss

✅ Correct Answer: (B) High throughput and fault tolerance

Explanation: Kafka was built to handle large volumes of data with high throughput and reliability.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 10:59 am in Apache Kafka

Apache Kafka MCQs with answers Page - 5

Q. What type of storage does Kafka use to persist data?

Q. Which property controls the maximum number of records returned in one poll?

Q. How does Kafka handle backpressure?

Q. Kafka messages are assigned which type of identifier?

Q. What happens if Kafka’s disk becomes full?

Q. How does Kafka scale horizontally?

Q. Kafka topic replication improves:

Q. Kafka can be used as a replacement for:

Q. Which command lists all available Kafka topics?

Q. Kafka’s primary design goal is:

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