Confluent Certified Developer for Apache Kafka Certification Examination : CCDAK

CCDAK real exams

Exam Code: CCDAK

Exam Name: Confluent Certified Developer for Apache Kafka Certification Examination

Updated: Aug 09, 2026

Q & A: 92 Questions and Answers

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Confluent CCDAK Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Apache Kafka Streams12%- Streams API concepts: topology, processors, state stores
- Windowing and time semantics
- Stream processing operations: map, filter, join, aggregation
- Error handling and state management
Topic 2: Apache Kafka Application Development28%- Transactional messaging and idempotence
- Schema management: Confluent Schema Registry, compatibility rules, evolution
- Consumer API: configuration, offset management, consumer groups, rebalancing
- Producer API: configuration, serialization, partitioning, error handling
Topic 3: Application Observability13%- Logging and monitoring metrics
- Tracing and performance tuning
- Error diagnosis and troubleshooting
Topic 4: Apache Kafka Fundamentals23%- Core concepts: brokers, topics, partitions, replicas, offsets
- Delivery semantics: at-most-once, at-least-once, exactly-once
- Configuration basics and cluster setup
- Kafka architecture and data flow
Topic 5: Kafka Connect15%- Data transformation and integration patterns
- Source and sink connectors configuration
- Connect architecture: workers, connectors, tasks, converters
Topic 6: Application Testing8%- Integration testing and test clusters
- Mocking and test utilities
- Unit testing producers and consumers

Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:

1. (You are configuring a source connector that writes records to an Orders topic.
You need to send some of the records to a different topic.
Which Single Message Transform (SMT) is best suited for this requirement?)

A) RegexRouter
B) TombstoneHandler
C) InsertField
D) HeaderFrom


2. (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.


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


4. What are three built-in abstractions in the Kafka Streams DSL?
(Select three.)

A) KStream
B) KTable
C) StreamTable
D) GlobalKTable
E) GlobalKStream


5. You are building a system for a retail store selling products to customers.
Which three datasets should you model as a GlobalKTable?
(Select three.)

A) Catalog of products
B) Log of payment transactions
C) All purchases at a retail store occurring in real time
D) Customer profile information
E) Inventory of products at a warehouse


Solutions:

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

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