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Confluent CCDAK Exam Syllabus Topics:

Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:

1. (You create a topic with five partitions.
What can you assume about messages read from that topic by a single consumer group?)

A) Messages from one partition can be consumed by any of the consumers in a group for faster processing.
B) All messages will be read from exactly one broker by the consumer group.
C) Messages can be consumed by a maximum of five consumers in the same consumer group.
D) The consumer group can only read the same number of messages from all the partitions.

2. (Which configuration is valid for deploying a JDBC Source Connector to read all rows from the orders table and write them to the dbl-orders topic?)

A) {"name": "jdbc-source","connector.class": "io.confluent.connect.jdbc.DdbcSourceConnector","tasks.
max": "1","connection.url": "jdbc:mysql://mysql:3306/dbl?user=user&useAutoAuth=true","topic.
prefix": "dbl-","table.whitelist": "orders"}
B) {"name": "orders-connect","connector.class": "io.confluent.connect.jdbc.DdbcSourceConnector","tasks.
max": "1","connection.url": "jdbc:mysql://mysql:3306/dbl","topic.whitelist": "orders","auto.create":
"true"}
C) {"name": "jdbc-source","connector.class": "io.confluent.connect.jdbc.JdbcSourceConnector","tasks.
max": "1","connection.url": "jdbc:mysql://mysql:3306/dbl?user=user&password=pas","topic.prefix":
"dbl-","table.whitelist": "orders"}
D) {"name": "dbl-orders","connector.class": "io.confluent.connect.jdbc.DdbcSourceConnector","tasks.
max": "1","connection.url": "jdbc:mysql://mysql:3306/dbl?user=user&password=pas","topic.prefix":
"dbl-","table.blacklist": "ord*"}

3. (You are writing a producer application and need to ensure proper delivery.
You configure the producer with acks=all.
Which two actions should you take to ensure proper error handling?
Select two.)

A) Check that producer.send() returned a RecordMetadata object and is not null.
B) Surround the call to producer.send() with a try/catch block to catch KafkaException.
C) Use a callback argument in producer.send() where you check delivery status.
D) Check the value of ProducerRecord.status().

4. What is a consequence of increasing the number of partitions in an existing Kafka topic?

A) Existing data will be redistributed across the new number of partitions temporarily increasing cluster load.
B) The acknowledgment process will increase latency for producers using acks=all.
C) Consumers will need to process data from more partitions which will significantly increase consumer lag.
D) Records with the same key could be located in different partitions.

5. Where are source connector offsets stored?

A) topic.offset.config
B) storage.offset.topic
C) offset, storage, partitions
D) offset.storage.topic

Solutions: