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Instant Download Confluent : CCDAK Questions & Answers as PDF & Test Engine
- Exam Code: CCDAK
- Exam Name: Confluent Certified Developer for Apache Kafka Certification Examination
- Updated: Oct 04, 2026
- No. of Questions: 92 Questions and Answers
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Confluent CCDAK Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Kafka Producers and Consumers | - Producer API
|
| Topic 2: Kafka Fundamentals | - Data flow in Kafka
|
| Topic 3: Kafka Ecosystem and Confluent Platform | - ksqlDB and connectors
|
| Topic 4: Kafka Streams and Processing | - Event processing patterns
|
Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:
What is accomplished by producing data to a topic with a message key?
- A. It provides a mechanism for encrypting messages at the partition level to ensure secure data transmission.
- B. Messages with the same key are routed to a deterministically selected partition, enabling order guarantees within that partition.
- C. Kafka brokers allow you to add more partitions to a given topic, without impacting the data flow for existing keys.
- D. Consumers can filter messages in real time based on the message key without processing unrelated messages.
Correct Answer: B 🗳️
Explanation: Only visible for Lead2Passed members. You can sign-up / login (it's free).
Kafka producers can batch messages going to the same partition.
Which statement is correct about producer batching?
- A. Producers can only batch messages of the same size.
- B. Producers can include multiple batches in a single request to a broker.
- C. Two or more broker failures will automatically disable batching on the producer.
- D. Producers have a separate background thread for each batch.
Correct Answer: B 🗳️
Explanation: Only visible for Lead2Passed members. You can sign-up / login (it's free).
(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 processing.guarantee=exactly_once_v2 in the Kafka Streams configuration.
- B. Set enable.idempotence=true in the internal producer configuration of the Kafka Streams application.
- C. Set enable.exactly_once=true in the Kafka Streams configuration.
- D. Enable compaction on the output topic to handle duplicates.
Correct Answer: A 🗳️
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(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 subscribe() method with an empty consumer group name configuration.
- C. Use the assign() method using all topic-partitions of the topic as argument.
- D. Use the subscribe() method with a regular expression argument.
Correct Answer: C 🗳️
Explanation: Only visible for Lead2Passed members. You can sign-up / login (it's free).
Match each configuration parameter with the correct deployment step in installing a Kafka connector.
Correct Answer:
Explanation:
1st: Place the connector's JAR file in the directory specified by plugin.path
2nd: Restart the Kafka Connect cluster
3rd: Verify using REST API (/connector-plugins)
4th: Configure the connector
5th: (Repeat of 4th, duplicate step)
1st # Place the connector's JAR file in the directory specified by the plugin.path configuration.
2nd # Restart the Kafka Connect cluster.
3rd # Verify that the connector is installed by listing all available connectors using the Kafka Connect REST API (/connector-plugins).
4th # Configure the connector using a JSON or properties file with the necessary settings.
5th # Configure the connector using a JSON or properties file with the necessary settings.
Kafka Connect requires that custom connectors be placed in the directory defined by plugin.path. After restarting the cluster, you can use the REST API to confirm availability and then deploy the connector configuration.
From Kafka Connect Documentation:
"After placing the JAR in the plugin.path, you must restart the Connect cluster to pick it up. Use the
/connector-plugins REST endpoint to verify."
The duplication of configuration is an error in the question options and should occur only once.
Reference: Kafka Connect Plugin Installation Guide
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