Apache Kafka Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

The acknowledgment setting in Kafka primarily relates to ensuring the durability of messages that are being produced. When a producer sends a message to a Kafka topic, the acknowledgment setting determines how the producer should wait for the broker's confirmation that the message has been successfully received and replicated.

When the acknowledgment level is set to a value such as 'all', it ensures that the message is acknowledged only after all of the in-sync replicas have confirmed receipt. This provides a strong guarantee regarding message durability, meaning that even in the case of broker failures, the data will not be lost, as it has been replicated across multiple nodes.

This ensures that messages are not only stored but also safeguarded against failures or data loss, which is crucial for applications relying on Kafka for reliable data transmission and storage. Other options like confirming consumer processing or managing user permissions relate to distinct aspects of Kafka's functionality and do not pertain directly to the acknowledgment mechanism used during message production. Therefore, the emphasis of the acknowledgment setting on message durability is key to its role in Kafka.