Important Confluent CCAAK Exam Questions

Answer: A, C, E

Explanation:

connect-configs stores connector configurations.

connect-status tracks the status of connectors and tasks (e.g., RUNNING, FAILED).

connect-offsets stores source connector offsets for reading from external systems.

Answer: B

Explanation:

When a broker goes down, the Controller detects the failure and triggers a leader election for all partitions that had their leader on the failed broker. The leader is chosen from the in-sync replicas (ISRs) of each partition.

Answer: A

Explanation:

acks=0 provides the highest throughput because the producer does not wait for any acknowledgment from the broker. This minimizes latency and maximizes performance.

However, it comes at the cost of no durability guarantees --- messages may be lost if the broker fails before writing them. This setting is suitable when throughput is critical and occasional data loss is acceptable, such as in some log ingestion use cases where logs are also stored elsewhere.

Answer: C

Explanation:

Kafka supports multiple listeners, allowing you to run PLAINTEXT and SSL simultaneously. By creating a new SSL-enabled listener (e.g., on a different port), existing applications can continue using PLAINTEXT while gradually migrating to the SSL listener. This approach avoids downtime and gives clients time to adapt without enforcing a hard cutover.

Answer: D

Explanation:

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.