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

A key operational aspect of partition replicas in Kafka is their requirement to be maintained on separate brokers for reliability. This design choice enhances fault tolerance and ensures that the system continues to operate smoothly even in the event of broker failures. By distributing replicas across different brokers, Kafka minimizes the risk of data loss. If one broker goes down, the remaining brokers can still access the replicated data, allowing for continued message consumption and maintaining system availability.

This strategy ensures that multiple copies of the data exist, providing redundancy and improving the overall robustness of the Kafka cluster. In a typical setup, each partition can have one or more replicas, and these replicas should be placed on different brokers to support high availability and durability. By adhering to this practice, Kafka can effectively safeguard against data loss and maintain its performance.

The other choices do not accurately reflect the intended functionality of partition replicas. For example, partition replicas do not replicate messages from other partitions, nor are they confined to a single physical server; they are designed explicitly to operate across multiple brokers. Each partition replica is always ready to serve as a backup, supporting operational resilience in Kafka.