Apache Kafka MCQ Questions with answers and solutions Page 29

Q. In Kafka, 'compacted topics' are useful for:

(A) Storing historical logs
(B) Storing the latest state per key
(C) Compressing topic names
(D) Managing consumer groups

💬 Discuss

✅ Correct Answer: (B) Storing the latest state per key

Explanation: Compacted topics retain the latest message per key and remove older ones.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 02:35 pm in Apache Kafka

Q. Kafka guarantees message order in:

(A) The entire topic
(B) Each partition
(C) Across consumer groups
(D) Each broker

💬 Discuss

✅ Correct Answer: (B) Each partition

Explanation: Kafka maintains order only within a single partition.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 02:35 pm in Apache Kafka

Q. Kafka MirrorMaker is mainly used for:

(A) Cloning consumer groups
(B) Sending data to databases
(C) Replicating Kafka clusters
(D) Generating synthetic traffic

💬 Discuss

✅ Correct Answer: (C) Replicating Kafka clusters

Explanation: MirrorMaker replicates messages across Kafka clusters for disaster recovery or geo-redundancy.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 02:35 pm in Apache Kafka

Q. What is the effect of increasing the number of Kafka partitions?

(A) Reduces availability
(B) Improves parallelism and scalability
(C) Slows message delivery
(D) Reduces disk usage

💬 Discuss

✅ Correct Answer: (B) Improves parallelism and scalability

Explanation: More partitions allow parallel reads/writes and improve scalability.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 02:35 pm in Apache Kafka

Q. Kafka retention policy can be based on:

(A) Consumer speed
(B) Message value
(C) Time or size
(D) Producer group

💬 Discuss

✅ Correct Answer: (C) Time or size

Explanation: Kafka supports retention policies based on time (ms) or log size (bytes).

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 02:35 pm in Apache Kafka

Q. Which Kafka feature provides strong message delivery guarantees?

(A) Consumers with high polling rate
(B) Producers with retries=0
(C) Idempotent producers and transactions
(D) ZooKeeper acknowledgments

💬 Discuss

✅ Correct Answer: (C) Idempotent producers and transactions

Explanation: Idempotent producers and transactions ensure exactly-once delivery semantics.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 02:35 pm in Apache Kafka

Q. Kafka offsets are stored by default in:

(A) ZooKeeper
(B) Kafka internal topic
(C) Consumer files
(D) Producer logs

💬 Discuss

✅ Correct Answer: (B) Kafka internal topic

Explanation: Kafka stores offsets in the internal topic __consumer_offsets.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 02:35 pm in Apache Kafka

Q. Kafka broker configuration file is named:

(A) broker.json
(B) server.xml
(C) server.properties
(D) broker-config.yaml

💬 Discuss

✅ Correct Answer: (C) server.properties

Explanation: server.properties is the main configuration file for Kafka brokers.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 02:35 pm in Apache Kafka

Q. Kafka Connect uses which type of connectors?

(A) Data wires
(B) Input/output streams
(C) Source and Sink connectors
(D) Client-server bridges

💬 Discuss

✅ Correct Answer: (C) Source and Sink connectors

Explanation: Kafka Connect uses source connectors to ingest and sink connectors to export data.

Published by Mr. Dubey ⭐ 111.54K Points at 13-Jun-2025 02:35 pm in Apache Kafka

Apache Kafka MCQs with answers Page - 29

Q. In Kafka, 'compacted topics' are useful for:

Q. Kafka guarantees message order in:

Q. Kafka MirrorMaker is mainly used for:

Q. What is the effect of increasing the number of Kafka partitions?

Q. Kafka retention policy can be based on:

Q. Which Kafka feature provides strong message delivery guarantees?

Q. Kafka offsets are stored by default in:

Q. Kafka broker configuration file is named:

Q. Kafka Connect uses which type of connectors?

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