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Confluent CCDAK Exam Syllabus Topics:

Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:

1. You need to explain the best reason to implement the consumer callback interface ConsumerRebalanceListener prior to a Consumer Group Rebalance.
Which statement is correct?

A) Offsets are compacted.
B) Previous log files are deleted.
C) Partition leaders may change.
D) Partitions assigned to a consumer may change.

2. (You are configuring a source connector that writes records to an Orders topic.
You need to send some of the records to a different topic.
Which Single Message Transform (SMT) is best suited for this requirement?)

A) RegexRouter
B) InsertField
C) TombstoneHandler
D) HeaderFrom

3. (You have a topic with four partitions. The application reading this topic is using a consumer group with two consumers.
Throughput is smoothly distributed among partitions, but application lag is increasing.
Application monitoring shows that message processing is consuming all available CPU resources.
Which action should you take to resolve this issue?)

A) Increase the max.poll.records property of consumers.
B) Add more partitions to the topic to increase the level of parallelism of the processing.
C) Decrease the max.poll.records property of consumers.
D) Add more consumers to increase the level of parallelism of the processing.

4. You have a Kafka Connect cluster with multiple connectors.
One connector is not working as expected.
How can you find logs related to that specific connector?

A) Make no change, there is no way to find logs other than by stopping all the other connectors.
B) Modify the log4j.properties file to enable connector context.
C) Modify the log4j.properties file to add a dedicated log appender for the connector.
D) Change the log level to DEBUG to have connector context information in logs.

5. A producer is configured with the default partitioner. It is sending records to a topic that is configured with five partitions. The record does not contain any key.
What is the result of this?

A) Records will be sent to partition 0.
B) An error will be raised and no record will be sent.
C) Records will be sent to the least used partition.
D) Records will be dispatched among the available partitions.

Solutions: