Learn with Confluent : CCDAK training material for 100% pass

Updated: Aug 28, 2026

No. of Questions: 92 Questions & Answers with Testing Engine

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Confluent CCDAK Exam Overview:

Certification Vendor:Confluent
Exam Name:Confluent Certified Developer for Apache Kafka (CCDAK) Certification Exam
Exam Number:CCDAK
Passing Score:70%
Exam Format:Multiple select, Multiple choice
Exam Price:$150 USD
Exam Duration:90 minutes
Certificate Validity Period:3 years
Real Exam Qty:60
Available Languages:English
Related Certifications:Confluent Certified Developer for Apache Kafka (CCDAK)
Confluent Certified Administrator for Apache Kafka (CCAK)
Recommended Training:Kafka Fundamentals Course
Apache Kafka Developer Training (Confluent)
Exam Registration:Confluent Certification Portal
Confluent Training and Exams
Sample Questions:Confluent CCDAK Sample Questions
Exam Way:Online proctored exam or authorized testing center
Pre Condition:Basic understanding of Java or another JVM language and familiarity with distributed systems concepts is recommended.
Official Syllabus URL:https://www.confluent.io/certification/

Confluent CCDAK Exam Syllabus Topics:

SectionObjectives
Topic 1: Kafka Ecosystem and Confluent Platform- ksqlDB and connectors
  • 1. Kafka Connect basics
    • 2. Stream querying concepts
      - Schema Registry
      • 1. Avro, Protobuf, JSON Schema usage
        Topic 2: Kafka Fundamentals- Kafka architecture and core concepts
        • 1. Brokers, topics, partitions
          • 2. Replication and fault tolerance
            - Data flow in Kafka
            • 1. Offset management
              • 2. Producer and consumer model
                Topic 3: Kafka Streams and Processing- Event processing patterns
                • 1. Windowing and aggregation
                  • 2. Exactly-once semantics
                    - Kafka Streams API
                    • 1. Stream processing fundamentals
                      • 2. Stateful vs stateless processing
                        Topic 4: Kafka Producers and Consumers- Consumer API
                        • 1. Consumer groups
                          • 2. Rebalancing and offset commits
                            - Producer API
                            • 1. Serialization and partitioning strategies
                              • 2. Reliability and acknowledgments

                                Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:

                                Question 1

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


                                Question 2

                                You need to configure a sink connector to write records that fail into a dead letter queue topic. Requirements:
                                Topic name: DLQ-Topic
                                Headers containing error context must be added to the messagesWhich three configuration parameters are necessary?(Select three.)

                                A. errors.deadletterqueue.context.headers.enable=true
                                B. errors.log.include.messages=true
                                C. errors.tolerance=none
                                D. errors.log.enable=true
                                E. errors.deadletterqueue.topic.name=DLQ-Topic
                                F. errors.tolerance=all


                                Question 3

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

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


                                Question 4

                                Your company has three Kafka clusters: Development, Testing, and Production.
                                The Production cluster is running out of storage, so you add a new node.
                                Which two statements about the new node are true?
                                (Select two.)

                                A. A new node will not have any partitions assigned to it unless a new topic is created or reassignment occurs.
                                B. A new node can be added without stopping existing cluster nodes.
                                C. A newly added node will have KRaft controller role by default.
                                D. A node ID will be assigned to the new node automatically.


                                Question 5

                                The producer code below features a Callback class with a method called onCompletion().
                                When will the onCompletion() method be invoked?

                                A. When a consumer sends an acknowledgement to the producer
                                B. When the producer receives the acknowledgment from the broker
                                C. When the producer puts the message into its socket buffer
                                D. When the producer batches the message


                                Solutions:

                                Question 1
                                Answer: A,C
                                Question 2
                                Answer: A,E,F
                                Question 3
                                Answer: B,E
                                Question 4
                                Answer: A,B
                                Question 5
                                Answer: B

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