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

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Confluent CCDAK Exam Syllabus Topics:

Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:

1. Which statement is true about how exactly-once semantics (EOS) work in Kafka Streams?

A) EOS in Kafka Streams relies on transactional producers to atomically commit state updates to changelog topics and output records to Kafka.
B) Kafka Streams provides EOS by periodically checkpointing state stores and replaying changelogs to recover only unprocessed messages during failure.
C) Kafka Streams disables log compaction on internal changelog topics to preserve all state changes for potential recovery.
D) EOS in Kafka Streams is implemented by creating a separate Kafka topic for deduplication of all messages processed by the application.

2. You have a Kafka consumer in production actively reading from a critical topic.
You need to update the offset of your consumer to start reading from the beginning of the topic.
Which action should you take?

A) Start a new consumer application with the same consumer group id.
B) Update the consumer configuration by setting auto.offset.reset=earliest.
C) Temporarily configure the topic's retention.ms parameter to 0 to empty the topic.
D) Update the consumer group's offset to the earliest position using the kafka-consumer-groups CLI tool.

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

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

4. (You have a Kafka consumer in production actively reading from a critical topic from which multiple other applications are consuming.
You have a new requirement to update the offset of your consumer to start reading from the beginning of the topic.
Which action would you take?)

A) Start a new consumer application with the same consumer group id.
B) Temporarily configure the topic's retention.ms parameter to 0 to empty the topic.
C) Update the consumer configuration by setting the auto.offset.reset property to earliest.
D) Update the consumer group's offset to the earliest position using the kafka-consumer-groups CLI tool.

5. An application is consuming messages from Kafka.
The application logs show that partitions are frequently being reassigned within the consumer group.
Which two factors may be contributing to this?
(Select two.)

A) The number of partitions does not match the number of application instances.
B) There is a storage issue on the broker.
C) An instance of the application is crashing and being restarted.
D) There is a slow consumer processing application.

Solutions: