Apache Kafka MCQ Questions with answers and solutions Page 22

Q. Kafka’s load balancing across consumers is handled by:

(A) Producer routing
(B) Broker configuration
(C) Consumer group coordinator
(D) Topic settings

💬 Discuss

✅ Correct Answer: (C) Consumer group coordinator

Explanation: The consumer group coordinator assigns partitions among consumers.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:09 pm in Apache Kafka

Q. Kafka uses ZooKeeper for:

(A) Data retention
(B) Topic storage
(C) Cluster metadata and leader election
(D) Message encryption

💬 Discuss

✅ Correct Answer: (C) Cluster metadata and leader election

Explanation: ZooKeeper manages broker metadata and leader elections.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:09 pm in Apache Kafka

Q. Kafka 2.8.0 introduced the option to:

(A) Use PostgreSQL as a backend
(B) Remove ZooKeeper dependency
(C) Disable replication
(D) Use REST APIs only

💬 Discuss

✅ Correct Answer: (B) Remove ZooKeeper dependency

Explanation: Kafka 2.8.0 introduced an early version of KRaft mode to eliminate ZooKeeper.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:09 pm in Apache Kafka

Q. What is the role of the Kafka producer API?

(A) To consume messages
(B) To process streams
(C) To send records to Kafka topics
(D) To store offsets

💬 Discuss

✅ Correct Answer: (C) To send records to Kafka topics

Explanation: The Kafka producer API is used to publish records to Kafka topics.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:10 pm in Apache Kafka

Q. What is Kafka’s default message format?

(A) XML
(B) Plain text
(C) Key-value pairs
(D) CSV

💬 Discuss

✅ Correct Answer: (C) Key-value pairs

Explanation: Kafka messages are in key-value pair format, both are byte arrays.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:10 pm in Apache Kafka

Q. What does ISR stand for in Kafka?

(A) In-Sync Replicas
(B) Internal Stream Routing
(C) Indexed Segment Records
(D) Input Stream Routing

💬 Discuss

✅ Correct Answer: (A) In-Sync Replicas

Explanation: ISR (In-Sync Replicas) are replicas that are fully caught up with the leader.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:10 pm in Apache Kafka

Q. What ensures message durability in Kafka?

(A) Replication factor
(B) Broker ID
(C) Consumer lag
(D) Compression type

💬 Discuss

✅ Correct Answer: (A) Replication factor

Explanation: Higher replication factor ensures data is not lost if a broker fails.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:10 pm in Apache Kafka

Q. Kafka’s leader election is handled by:

(A) Producer
(B) ZooKeeper or KRaft controller
(C) Consumer
(D) Connect API

💬 Discuss

✅ Correct Answer: (B) ZooKeeper or KRaft controller

Explanation: Leader election is handled by ZooKeeper or KRaft in newer versions.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:10 pm in Apache Kafka

Q. Which setting controls how often the producer sends batches?

(A) batch.size
(B) linger.ms
(C) compression.type
(D) acks

💬 Discuss

✅ Correct Answer: (B) linger.ms

Explanation: linger.ms sets how long the producer waits before sending a batch.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:10 pm in Apache Kafka

Q. Kafka stores consumer offsets in:

(A) ZooKeeper only
(B) Producer logs
(C) Kafka topic __consumer_offsets
(D) Partitions

💬 Discuss

✅ Correct Answer: (C) Kafka topic __consumer_offsets

Explanation: Consumer offsets are stored in a special internal Kafka topic called __consumer_offsets.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:10 pm in Apache Kafka

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