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Confluent CCDAK Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Apache Kafka Application Development | 28% | - Schema management: Confluent Schema Registry, compatibility rules, evolution - Transactional messaging and idempotence - Producer API: configuration, serialization, partitioning, error handling - Consumer API: configuration, offset management, consumer groups, rebalancing |
| Application Observability | 13% | - Logging and monitoring metrics - Tracing and performance tuning - Error diagnosis and troubleshooting |
| Application Testing | 8% | - Unit testing producers and consumers - Mocking and test utilities - Integration testing and test clusters |
| Apache Kafka Streams | 12% | - Streams API concepts: topology, processors, state stores - Error handling and state management - Windowing and time semantics - Stream processing operations: map, filter, join, aggregation |
| Kafka Connect | 15% | - Connect architecture: workers, connectors, tasks, converters - Source and sink connectors configuration - Data transformation and integration patterns |
| Apache Kafka Fundamentals | 23% | - Configuration basics and cluster setup - Core concepts: brokers, topics, partitions, replicas, offsets - Kafka architecture and data flow - Delivery semantics: at-most-once, at-least-once, exactly-once |
Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:
1. Which tool can you use to modify the replication factor of an existing topic?
A) kafka-recreate-topic.sh
B) kafka-topics.sh
C) kafka-reassign-topics.sh
D) kafka-reassign-partitions.sh
2. (You are designing a stream pipeline to monitor the real-time location of GPS trackers, where historical location data is not required.
Each event has:
* Key: trackerId
* Value: latitude, longitude
You need to ensure that the latest location for each tracker is always retained in the Kafka topic.
Which topic configuration parameter should you set?)
A) min.cleanable.dirty.ratio=-1
B) retention.ms=infinite
C) retention.ms=0
D) cleanup.policy=compact
3. You are sending messages to a Kafka cluster in JSON format and want to add more information related to each message:
Format of the message payload
Message creation time
A globally unique identifier that allows the message to be traced through the systemWhere should this additional information be set?
A) Broker
B) Key
C) Value
D) Header
4. (A stream processing application tracks user activity in online shopping carts, including items added, removed, and ordered throughout the day for each user.
You need to capture data to identify possible periods of user inactivity.
Which type of Kafka Streams window should you use?)
A) Tumbling
B) Sliding
C) Session
D) Hopping
5. You have a Kafka Connect cluster with multiple connectors.
One connector is not working as expected.
How can you find logs related to that specific connector?
A) Modify the log4j.properties file to enable connector context.
B) Make no change, there is no way to find logs other than by stopping all the other connectors.
C) Modify the log4j.properties file to add a dedicated log appender for the connector.
D) Change the log level to DEBUG to have connector context information in logs.
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: D | Question # 3 Answer: D | Question # 4 Answer: C | Question # 5 Answer: C |

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