CCDAK Exam Dumps : Confluent Certified Developer for Apache Kafka Certification Examination

The bootstrap.servers setting is used by clients (producers and consumers) toinitially connectto the Kafka cluster. It does not need to list all brokers—just a few that are up and reachable. The client will then use the cluster metadata to discover the full broker list.

FromKafka Java Client Configuration Docs:

“This is a list of host/port pairs to use for establishing the initial connection to the Kafka cluster. The client will make use of all servers irrespective of which servers are specified here for bootstrapping.”

Hence,listing multiple brokers provides redundancyand fault tolerance in the event one is down during client startup.

SMTs (Single Message Transforms) arelightweight transformationsapplied to individual messages as they pass through Kafka Connect.

Chaining SMTs: You can applymultiple SMTsin sequence by defining them in order in the connector config.

Masking or modifying fieldsis acommon use case(e.g., redacting sensitive data).

FromKafka Connect Documentation:

“Single Message Transforms (SMTs) are applied to individual messages. You can chain multiple SMTs together.”

SMTsdo not perform joins(B is incorrect).

Converters and SMTs areseparate concerns(D is incorrect).

The ConsumerRebalanceListener lets youhandle partition assignments and revocationsduring rebalances. This is critical for managingoffsets,stateful processing, orexternal transactions.

FromKafka Consumer Rebalance Docs:

“Implementing ConsumerRebalanceListener allows your application to take action before and after partitions are reassigned.”

A is true: It lets your app react when partitionsassigned to the consumer change.

B, C, and D are unrelated to consumer rebalancing directly.