Free Confluent CCAAK Exam Dumps June 2026

SASL/PLAIN -- A simple username/password mechanism supported by Kafka.

SASL/GSSAPI (Kerberos) -- Kafka supports Kerberos authentication through the GSSAPI mechanism.

SASL/OAUTHBEARER -- Kafka supports OAUTHBEARER for token-based authentication.

The broker.rack property is used in a Kafka broker's configuration to specify the rack or availability zone the broker belongs to. This is important for rack-aware replica placement, allowing Kafka to distribute replicas across different racks for fault tolerance.

Replication factor determines how many copies of each partition exist across different brokers. A replication factor of 3 ensures that even if one or two brokers fail, the data is still available, thus eliminating a single point of failure.

Increasing batch.size allows the producer to accumulate more messages into a single batch, improving compression and reducing the number of requests sent to the broker.

Increasing linger.ms gives the producer more time to fill up batches before sending them, which improves batching efficiency and throughput.

This combination is a best practice for maximizing throughput, especially when message volume is high or consistent latency is not a strict requirement.

Kafka ensures message immutability for data integrity. Once a message is written to a Kafka topic and persisted to disk, it cannot be modified. This immutability guarantees that consumers always receive the original message content, which is critical for auditability, fault tolerance, and data reliability.