Apache Kafka MCQ Questions with answers and solutions Page 14

Q. Kafka consumers poll messages using:

(A) Push-based model
(B) Webhook callbacks
(C) Pull-based model
(D) ZooKeeper triggers

💬 Discuss

✅ Correct Answer: (C) Pull-based model

Explanation: Kafka consumers use a pull-based model to fetch data from brokers.

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

Q. Kafka retention settings are configured:

(A) Per consumer group
(B) Per partition
(C) Globally per cluster
(D) Per topic

💬 Discuss

✅ Correct Answer: (D) Per topic

Explanation: Kafka retention settings can be customized on a per-topic basis.

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

Q. Kafka handles schema evolution best with:

(A) Raw text messages
(B) Protobuf with brokers
(C) Avro with Schema Registry
(D) XML validation

💬 Discuss

✅ Correct Answer: (C) Avro with Schema Registry

Explanation: Avro with Schema Registry enables compatibility across schema versions in Kafka.

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

Q. Kafka guarantees message delivery under which setting?

(A) Replication.factor=0
(B) acks=all
(C) acks=0
(D) acks=1

💬 Discuss

✅ Correct Answer: (B) acks=all

Explanation: 'acks=all' ensures that the message is acknowledged only after all replicas receive it.

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

Q. Kafka Streams state stores are used to:

(A) Store HTML pages
(B) Persist the state of stream transformations
(C) Track offsets
(D) Save logs from brokers

💬 Discuss

✅ Correct Answer: (B) Persist the state of stream transformations

Explanation: State stores in Kafka Streams hold local data used in aggregations or joins.

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

Q. In Kafka, messages are appended to a partition in:

(A) No specific order
(B) Reverse order
(C) Strict sequential order
(D) Random order

💬 Discuss

✅ Correct Answer: (C) Strict sequential order

Explanation: Kafka appends messages in strict order to each partition to ensure ordering guarantees.

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

Q. What is the purpose of Kafka's ISR (In-Sync Replicas)?

(A) To cache consumer offsets
(B) To track active producers
(C) To track replicas that are up-to-date with the leader
(D) To store schema versions

💬 Discuss

✅ Correct Answer: (C) To track replicas that are up-to-date with the leader

Explanation: ISR is a set of replicas that are fully caught up with the leader.

Published by Mr. Dubey ⭐ 109.99K Points at 13-Jun-2025 02:04 pm in Apache Kafka

Q. What happens if all replicas of a partition go out of sync?

(A) Producer retries message
(B) Partition is rebalanced
(C) Broker shuts down
(D) Data may be lost or unavailable

💬 Discuss

✅ Correct Answer: (D) Data may be lost or unavailable

Explanation: Kafka cannot guarantee availability or durability if all replicas go out of sync.

Published by Mr. Dubey ⭐ 109.99K Points at 13-Jun-2025 02:04 pm in Apache Kafka

Q. Kafka uses what data structure to store messages in a partition?

(A) Circular buffer
(B) Linked list
(C) Append-only log
(D) Stack

💬 Discuss

✅ Correct Answer: (C) Append-only log

Explanation: Kafka partitions are implemented as append-only logs.

Published by Mr. Dubey ⭐ 109.99K Points at 13-Jun-2025 02:04 pm in Apache Kafka

Q. Kafka consumer group ensures that:

(A) All consumers read all partitions
(B) Each message is consumed by only one consumer within the group
(C) Consumers never share topics
(D) Only one partition is used

💬 Discuss

✅ Correct Answer: (B) Each message is consumed by only one consumer within the group

Explanation: Within a consumer group, each partition is assigned to only one consumer.

Published by Mr. Dubey ⭐ 109.99K Points at 13-Jun-2025 02:04 pm in Apache Kafka

Apache Kafka MCQs with answers Page - 14

Q. Kafka consumers poll messages using:

Q. Kafka retention settings are configured:

Q. Kafka handles schema evolution best with:

Q. Kafka guarantees message delivery under which setting?

Q. Kafka Streams state stores are used to:

Q. In Kafka, messages are appended to a partition in:

Q. What is the purpose of Kafka's ISR (In-Sync Replicas)?

Q. What happens if all replicas of a partition go out of sync?

Q. Kafka uses what data structure to store messages in a partition?

Q. Kafka consumer group ensures that:

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