Confluent Certified Developer for Apache Kafka Certification Examination : CCDAK

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Confluent CCDAK Exam Syllabus Topics:

Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:

1. You use Kafka Connect with the JDBC source connector to extract data from a large database and push it into Kafka.
The database contains tens of tables, and the current connector is unable to process the data fast enough.
You add more Kafka Connect workers, but throughput doesn't improve.
What should you do next?

A) Increase the number of Kafka partitions for the topics.
B) Increase the value of the connector's property tasks.max.
C) Modify the database schemas to enable horizontal sharding.
D) Add more Kafka brokers to the cluster.

2. (You are writing to a Kafka topic with producer configuration acks=all.
The producer receives acknowledgements from the broker but still creates duplicate messages due to network timeouts and retries.
You need to ensure that duplicate messages are not created.
Which producer configuration should you set?)

A) retries=2147483647max.in.flight.requests.per.connection=5enable.idempotence=false
B) retries=2147483647max.in.flight.requests.per.connection=1enable.idempotence=true
C) retries=0max.in.flight.requests.per.connection=5enable.idempotence=true
D) enable.auto.commit=true

3. You need to collect logs from a host and write them to a Kafka topic named 'logs-topic'. You decide to use Kafka Connect File Source connector for this task.
What is the preferred deployment mode for this connector?

A) Distributed mode
B) SingleCluster mode
C) Standalone mode
D) Parallel mode

4. (You need to send a JSON message on the wire. The message key is a string.
How would you do this?)

A) Specify a key serializer class for the JSON contents of the message's value. Set the value serializer class to null.
B) Specify a value serializer class for the JSON contents of the message's value. Set the key serializer class to JSON.
C) Specify a value serializer class for the JSON contents of the message's value. Set the key serializer class to null.
D) Specify a value serializer class for the JSON contents of the message's value. Set a key serializer for the string value.

5. Which configuration allows more time for the consumer poll to process records?

A) fetch.max.wait.ms
B) heartbeat.interval.ms
C) max.poll.interval.ms
D) session.timeout.ms

Solutions: