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Confluent CCDAK Exam Syllabus Topics:

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

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Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions (Q79-Q84):

NEW QUESTION # 79
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.)

Answer: B,D,F

Explanation:
To send failed records to adead letter queue (DLQ), you must configure:
* errors.tolerance=all: Tells the connector tonot failon errors but handle them (e.g., send to DLQ).
* errors.deadletterqueue.topic.name=DLQ-Topic: Specifies the DLQ topic.
* errors.deadletterqueue.context.headers.enable=true: Includes error context in message headers.
FromKafka Connect Error Handling Docs:
"Kafka Connect supports directing problematic records to a separate topic (DLQ) using errors.* configs.
Headers can include failure metadata."
Options D, E, F are related tologging, not DLQ behavior.
Reference:Kafka Connect Configurations > Error Handling


NEW QUESTION # 80
Which of the following errors are retriable from a producer perspective? (select two)

Answer: D,E

Explanation:
Both of these are retriable errors, others non-retriable errors. See the full list of errors and their "retriable" status herehttps://kafka.apache.org/protocol#protocol_error_codes


NEW QUESTION # 81
Two consumers share the same group.id (consumer group id). Each consumer will

Answer: A

Explanation:
Each consumer is assigned a different partition of the topic to consume.


NEW QUESTION # 82
When using the Confluent Kafka Distribution, where does the schema registry reside?

Answer: A

Explanation:
Schema registry is a separate application that provides RESTful interface for storing and retrieving Avro schemas.


NEW QUESTION # 83
To enhance compression, I can increase the chances of batching by using

Answer: B

Explanation:
linger.ms forces the producer to wait before sending messages, hence increasing the chance of creating batches that can be heavily compressed.


NEW QUESTION # 84
......

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