Apache Kafka Practice Exam 2025 – The Complete All-in-One Guide for Exam Success!

The Producer Acknowledgment setting in Kafka is controlled by the number of acknowledgments a producer receives, which is indeed the correct choice. This setting determines how many acknowledgments the producer requires from the brokers before considering a request complete.

In Kafka, there are different configurations for acknowledgments, such as "acks=0," "acks=1," and "acks=all." When set to "acks=0," the producer does not wait for any acknowledgment from the broker, which can result in faster writes but at the risk of losing messages. Setting it to "acks=1" means the producer waits for the leader broker to acknowledge the receipt of the message, providing some level of durability. Finally, "acks=all" requires all replicas to acknowledge receipt of the message, ensuring the highest level of reliability and durability.

Understanding the control that acknowledgment settings provide over message delivery guarantees is crucial for configuring producers according to system requirements and expectations for reliability.

Other options relate to different aspects of Kafka's functionality. The number of partitions a topic has contributes to scalability and parallelism but does not influence acknowledgment directly. The retention policy for messages dictates how long messages are stored and when they expire, which is unrelated to acknowledgment settings. Similarly, the consumer's