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Confluent CCDAK Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Schema Management | 5-10% | - Protobuf and JSON Schemas - Avro Schemas - Schema Registration and Retrieval - Schema Registry Architecture - Schema Evolution and Compatibility |
| Topic 2: Kafka Connect | 10-15% | - Converters and Transforms - Single Message Transformations (SMT) - Offset Management in Connect - Connector Configuration - Source and Sink Connectors - Connect Architecture (Workers, Connectors, Tasks) |
| Topic 3: Installing and Configuring Kafka | 5-10% | - Broker Configuration Parameters - Partition Assignment Strategies - Topic Creation and Configuration - ZooKeeper vs KRaft Mode |
| Topic 4: Kafka Streams | 20-25% | - Testing Kafka Streams Applications - State Stores and Processors - Streams Architecture and Topology - Exactly-Once Processing - Transformation Operations (map, filter, join, aggregate) - Windowed Operations (Tumbling, Hopping, Session) - Interactive Queries |
| Topic 5: Security | 5-10% | - Encryption in Transit - Authorization (ACLs) - Securing Schema Registry - Authentication (SASL, SSL/TLS) |
| Topic 6: Monitoring and Operations | 5-10% | - Disaster Recovery - Cross-region Replication - Consumer Lag and Health Checks - Log Compaction - Kafka Metrics and Monitoring |
| Topic 7: Kafka Fundamentals | 10-15% | - Replication Factor and ISR - Log Segments and Retention - Brokers and Clusters - Producer and Consumer Basics - Topics, Partitions, and Offsets |
| Topic 8: Developing with Kafka Consumers | 15-20% | - Commit Strategies (Auto, Manual, Cooperative) - Consumer Interceptors - Offset Management - Consumer Configuration and Tuning - Deserialization - Multi-threaded Consumers - Consumer Groups and Rebalancing |
| Topic 9: Developing with Kafka Producers | 15-20% | - Exactly-Once Semantics - Producer Configuration and Tuning - Idempotent Producers - Partitioning Strategies - Error Handling and Retry Logic - Producer Interceptors - Serialization (JSON, Avro, Protobuf) |
Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:
1. (What are two stateless operations in the Kafka Streams API?
Select two.)
A) Join
B) GroupBy
C) Reduce
D) Filter
2. You are composing a REST request to create a new connector in a running Connect cluster. You invoke POST /connectors with a configuration and receive a 409 (Conflict) response.
What are two reasons for this response? (Select two.)
A) The connect cluster has reached capacity, and new connectors cannot be created without expanding the cluster.
B) The connector configuration was invalid, and the response body will expand on the configuration error.
C) The Connect cluster is in process of rebalancing.
D) The Connector already exists in the cluster.
3. (You have a Kafka consumer in production actively reading from a critical topic from which multiple other applications are consuming.
You have a new requirement to update the offset of your consumer to start reading from the beginning of the topic.
Which action would you take?)
A) Start a new consumer application with the same consumer group id.
B) Update the consumer configuration by setting the auto.offset.reset property to earliest.
C) Temporarily configure the topic's retention.ms parameter to 0 to empty the topic.
D) Update the consumer group's offset to the earliest position using the kafka-consumer-groups CLI tool.
4. Which partition assignment minimizes partition movements between two assignments?
A) PartitionAssignor
B) StickyAssignor
C) RangeAssignor
D) RoundRobinAssignor
5. (You have a Kafka Connect cluster with multiple connectors deployed.
One connector is not working as expected.
You need to find logs related to that specific connector to investigate the issue.
How can you find the connector's logs?)
A) Modify the log4j.properties file to add a dedicated log appender for the connector.
B) Modify the log4j.properties file to enable connector context.
C) Change the log level to DEBUG to include connector context information.
D) Make no change; there is no way to isolate connector logs.
Solutions:
| Question # 1 Answer: B,D | Question # 2 Answer: C,D | Question # 3 Answer: D | Question # 4 Answer: B | Question # 5 Answer: A |
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