Confluent CCDAK

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Repeated consolidation exercise

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Propositional trend analysis is accurate

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Universal answer template

Everything needs a right way. The good method can bring the result with half the effort, the same different exam also needs the good test method. Our CCDAK study questions in every year are summarized based on the test purpose, every answer is a template, there are subjective and objective exams of two parts, we have in the corresponding modules for different topic of deliberate practice. To this end, our CCDAK training materials in the qualification exam summarize some problem - solving skills, and induce some generic templates. The user can scout for answer and scout for score based on the answer templates we provide, so the universal template can save a lot of precious time for the user.

Confluent CCDAK Exam Syllabus Topics:

Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:

1. (You want to read messages from all partitions of a topic in every consumer instance of your application.
How do you do this?)

A) Use the assign() method with the topic name as argument.
B) Use the assign() method using all topic-partitions of the topic as argument.
C) Use the subscribe() method with an empty consumer group name configuration.
D) Use the subscribe() method with a regular expression argument.

2. You have a consumer group with default configuration settings reading messages from your Kafka cluster.
You need to optimize throughput so the consumer group processes more messages in the same amount of time.
Which change should you make?

A) Disable auto commit and have the consumers manually commit offsets.
B) Increase the number of bytes the consumers read with each fetch request.
C) Remove some consumers from the consumer group.
D) Decrease the session timeout of each consumer.

3. Which two statements are correct about transactions in Kafka?
(Select two.)

A) Information about producers and their transactions is stored in the _transaction_state topic.
B) All messages from a failed transaction will be deleted from a Kafka topic.
C) Transactions are only possible when writing messages to a topic with single partition.
D) Transactions guarantee at least once delivery of messages.
E) Consumers can consume both committed and uncommitted transactions.

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

5. (You are implementing a Kafka Streams application to process financial transactions.
Each transaction must be processed exactly once to ensure accuracy.
The application reads from an input topic, performs computations, and writes results to an output topic.
During testing, you notice duplicate entries in the output topic, which violates the exactly-once processing requirement.
You need to ensure exactly-once semantics (EOS) for this Kafka Streams application.
Which step should you take?)

A) Set enable.exactly_once=true in the Kafka Streams configuration.
B) Set processing.guarantee=exactly_once_v2 in the Kafka Streams configuration.
C) Set enable.idempotence=true in the internal producer configuration of the Kafka Streams application.
D) Enable compaction on the output topic to handle duplicates.

Solutions: