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Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:

1. You need to correctly join data from two Kafka topics.
Which two scenarios will allow for co-partitioning?
(Select two.)

A) Both topics have the same number of partitions.
B) Both topics have the same key and partitioning strategy.
C) Both topics have the same value schema.
D) Both topics have the same retention time.

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

3. Which two statements about Kafka Connect Single Message Transforms (SMTs) are correct?
(Select two.)

A) SMT functionality is included within Kafka Connect converters.
B) Multiple SMTs can be chained together and act on source or sink messages.
C) SMTs are often used to join multiple records from a source data system into a single Kafka record.
D) Masking data is a good example of an SMT.

4. Match each configuration parameter with the correct option.
To answer choose a match for each option from the drop-down. Partial
credit is given for each correct answer.

5. You have a Kafka client application that has real-time processing requirements.
Which Kafka metric should you monitor?

A) Consumer lag between brokers and consumers
B) Aggregate incoming byte rate
C) Consumer heartbeat rate to group coordinator
D) Total time to serve requests to replica followers

Solutions: