Apache Kafka MCQ Questions with answers and solutions Page 20

Q. In a Kafka cluster, each broker has a unique:

(A) IP address
(B) Cluster name
(C) broker.id
(D) Topic name

💬 Discuss

✅ Correct Answer: (C) broker.id

Explanation: Each Kafka broker is identified by a unique 'broker.id'.

Published by Mr. Dubey ⭐ 109.99K Points at 13-Jun-2025 02:07 pm in Apache Kafka

Q. Kafka clients can be written in:

(A) Java only
(B) C++ only
(C) Multiple languages
(D) Python only

💬 Discuss

✅ Correct Answer: (C) Multiple languages

Explanation: Kafka clients exist for many languages like Java, Python, C++, Go, etc.

Published by Mr. Dubey ⭐ 109.99K Points at 13-Jun-2025 02:07 pm in Apache Kafka

Q. Kafka is designed to handle:

(A) Small datasets only
(B) Large-scale data streams
(C) Mobile UI rendering
(D) Simple command-line applications

💬 Discuss

✅ Correct Answer: (B) Large-scale data streams

Explanation: Kafka is optimized for high-throughput, large-scale real-time data streams.

Published by Mr. Dubey ⭐ 109.99K Points at 13-Jun-2025 02:07 pm in Apache Kafka

Q. What happens if a Kafka producer sends messages faster than the broker can handle?

(A) Messages are lost
(B) Producer blocks or errors depending on configuration
(C) Broker stops automatically
(D) ZooKeeper reassigns partitions

💬 Discuss

✅ Correct Answer: (B) Producer blocks or errors depending on configuration

Explanation: If buffer memory is full, the producer will block or throw an exception based on configuration.

Published by Mr. Dubey ⭐ 109.99K Points at 13-Jun-2025 02:09 pm in Apache Kafka

Q. Kafka topics are split into partitions to:

(A) Store data permanently
(B) Enable concurrent reads and writes
(C) Reduce message size
(D) Encrypt messages

💬 Discuss

✅ Correct Answer: (B) Enable concurrent reads and writes

Explanation: Partitions allow parallelism for producers and consumers.

Published by Mr. Dubey ⭐ 109.99K Points at 13-Jun-2025 02:09 pm in Apache Kafka

Q. Which Kafka component acts as a distributed commit log?

(A) Consumer
(B) Producer
(C) Topic
(D) Broker

💬 Discuss

✅ Correct Answer: (D) Broker

Explanation: Kafka brokers maintain logs of all messages in a partition, like a distributed commit log.

Published by Mr. Dubey ⭐ 109.99K Points at 13-Jun-2025 02:09 pm in Apache Kafka

Q. Kafka is optimized for:

(A) Low latency messaging
(B) Batch processing
(C) Short-lived tasks
(D) Browser caching

💬 Discuss

✅ Correct Answer: (A) Low latency messaging

Explanation: Kafka provides low-latency message processing with high throughput.

Published by Mr. Dubey ⭐ 109.99K Points at 13-Jun-2025 02:09 pm in Apache Kafka

Q. Kafka consumers subscribe to topics using:

(A) ZooKeeper
(B) Consumer groups
(C) Kafka admin
(D) Broker IDs

💬 Discuss

✅ Correct Answer: (B) Consumer groups

Explanation: Consumers belong to a group and subscribe to topics for coordinated message consumption.

Published by Mr. Dubey ⭐ 109.99K Points at 13-Jun-2025 02:09 pm in Apache Kafka

Q. Which of these improves Kafka message durability?

(A) acks=0
(B) acks=all
(C) acks=1
(D) acks=auto

💬 Discuss

✅ Correct Answer: (B) acks=all

Explanation: With acks=all, the producer waits for all in-sync replicas to acknowledge the message.

Published by Mr. Dubey ⭐ 109.99K Points at 13-Jun-2025 02:09 pm in Apache Kafka

Q. Kafka’s retention policy is based on:

(A) Number of messages
(B) Consumer lag
(C) Time or size
(D) Broker load

💬 Discuss

✅ Correct Answer: (C) Time or size

Explanation: Kafka retains messages based on time (log.retention.ms) or size (log.retention.bytes).

Published by Mr. Dubey ⭐ 109.99K Points at 13-Jun-2025 02:09 pm in Apache Kafka

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