Apache Kafka MCQ Questions with answers and solutions Page 24

Q. Kafka's replication factor determines:

(A) Number of messages sent
(B) Number of brokers used to store a partition copy
(C) Consumer group size
(D) Producer throughput

💬 Discuss

✅ Correct Answer: (B) Number of brokers used to store a partition copy

Explanation: Replication factor defines how many broker copies are kept for each partition.

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

Q. What is the primary function of Kafka brokers?

(A) Coordinate consumers
(B) Manage cluster metadata
(C) Receive, store, and serve messages
(D) Encrypt data streams

💬 Discuss

✅ Correct Answer: (C) Receive, store, and serve messages

Explanation: Kafka brokers handle message storage, delivery, and partition management.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:29 pm in Apache Kafka

Q. Kafka consumers fetch data from:

(A) ZooKeeper
(B) Kafka topics
(C) Producers
(D) Kafka controller

💬 Discuss

✅ Correct Answer: (B) Kafka topics

Explanation: Consumers subscribe to topics and fetch data directly from partitions.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:29 pm in Apache Kafka

Q. Kafka partitions help achieve:

(A) Message encryption
(B) Low availability
(C) High throughput and parallelism
(D) Topic deletion

💬 Discuss

✅ Correct Answer: (C) High throughput and parallelism

Explanation: Partitioning allows parallel processing and improves throughput.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:29 pm in Apache Kafka

Q. What is the purpose of Kafka’s retention policy?

(A) To remove duplicates
(B) To compress messages
(C) To control how long messages are stored
(D) To trigger consumer actions

💬 Discuss

✅ Correct Answer: (C) To control how long messages are stored

Explanation: Retention policy defines how long Kafka retains messages in a topic.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:29 pm in Apache Kafka

Q. What type of messaging system is Kafka?

(A) Pull-based
(B) Push-based
(C) Hybrid
(D) Time-triggered

💬 Discuss

✅ Correct Answer: (A) Pull-based

Explanation: Kafka uses a pull model where consumers request messages from brokers.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:29 pm in Apache Kafka

Q. Kafka message offsets are unique to:

(A) The whole topic
(B) The broker
(C) Each partition
(D) The producer

💬 Discuss

✅ Correct Answer: (C) Each partition

Explanation: Offsets are unique within a partition and track message position.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:29 pm in Apache Kafka

Q. In Kafka, what is a 'leader' replica?

(A) The replica that is offline
(B) The one that handles all reads and writes
(C) The last message sent
(D) The oldest broker

💬 Discuss

✅ Correct Answer: (B) The one that handles all reads and writes

Explanation: Only the leader replica serves client requests for a partition.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:29 pm in Apache Kafka

Q. Kafka’s log compaction is useful for:

(A) Deleting old messages
(B) Storing only latest updates per key
(C) Batch compression
(D) Offset reset

💬 Discuss

✅ Correct Answer: (B) Storing only latest updates per key

Explanation: Log compaction ensures only the latest value per key is retained.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:29 pm in Apache Kafka

Q. Which component is used to stream data processing in Kafka?

(A) Kafka MirrorMaker
(B) Kafka Streams API
(C) Kafka Broker
(D) Kafka Offset Manager

💬 Discuss

✅ Correct Answer: (B) Kafka Streams API

Explanation: Kafka Streams API is used to process data in real-time directly from Kafka topics.

Published by Mr. Dubey ⭐ 110.47K Points at 13-Jun-2025 02:29 pm in Apache Kafka

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