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Confluent CCDAK Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Application Observability | 13% | - Error diagnosis and troubleshooting - Tracing and performance tuning - Logging and monitoring metrics |
| Topic 2: Apache Kafka Streams | 12% | - Stream processing operations: map, filter, join, aggregation - Windowing and time semantics - Streams API concepts: topology, processors, state stores - Error handling and state management |
| Topic 3: Apache Kafka Fundamentals | 23% | - Kafka architecture and data flow - Core concepts: brokers, topics, partitions, replicas, offsets - Configuration basics and cluster setup - Delivery semantics: at-most-once, at-least-once, exactly-once |
| Topic 4: Kafka Connect | 15% | - Data transformation and integration patterns - Source and sink connectors configuration - Connect architecture: workers, connectors, tasks, converters |
| Topic 5: Apache Kafka Application Development | 28% | - Transactional messaging and idempotence - Schema management: Confluent Schema Registry, compatibility rules, evolution - Producer API: configuration, serialization, partitioning, error handling - Consumer API: configuration, offset management, consumer groups, rebalancing |
| Topic 6: Application Testing | 8% | - Integration testing and test clusters - Unit testing producers and consumers - Mocking and test utilities |
Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:
1. 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.tolerance=all
B) errors.deadletterqueue.topic.name=DLQ-Topic
C) errors.deadletterqueue.context.headers.enable=true
D) errors.log.enable=true
E) errors.tolerance=none
F) errors.log.include.messages=true
2. (You want to enrich the content of a topic by joining it with key records from a second topic.
The two topics have a different number of partitions.
Which two solutions can you use?
Select two.)
A) Use a KStream-KTable join; Kafka Streams will automatically repartition the topics to satisfy the co- partitioning constraint.
B) Create as many Kafka Streams application instances as the maximum number of partitions of the two topics and use a KStream-KTable join.
C) Use a GlobalKTable for one of the topics where data does not change frequently and use a KStream- GlobalKTable join.
D) Repartition one topic to a new topic with the same number of partitions as the other topic (co- partitioning constraint) and use a KStream-KTable join.
3. (You create a topic with five partitions.
What can you assume about messages read from that topic by a single consumer group?)
A) Messages from one partition can be consumed by any of the consumers in a group for faster processing.
B) The consumer group can only read the same number of messages from all the partitions.
C) Messages can be consumed by a maximum of five consumers in the same consumer group.
D) All messages will be read from exactly one broker by the consumer group.
4. (A consumer application runs once every two weeks and reads from a Kafka topic.
The last time the application ran, the last offset processed was 217.
The application is configured with auto.offset.reset=latest.
The current offsets in the topic start at 318 and end at 588.
Which offset will the application start reading from when it starts up for its next run?)
A) 0
B) 318
C) 218
D) 589
5. (Your configuration parameters for a Source connector and Connect worker are:
* offset.flush.interval.ms=60000
* offset.flush.timeout.ms=500
* offset.storage.topic=connect-offsets
* offset.storage.replication.factor=-1
Which two statements match the expected behavior?
Select two.)
A) The connector will commit offsets to a topic called connect-offsets.
B) The connector will wait 500 ms before trying to commit offsets for tasks.
C) The connector will commit offsets to the broker default offsets topic.
D) The offsets topic will use the broker default replication factor.
Solutions:
| Question # 1 Answer: A,B,C | Question # 2 Answer: C,D | Question # 3 Answer: C | Question # 4 Answer: D | Question # 5 Answer: A,D |



