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Confluent CCDAK Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Kafka Fundamentals | 10-15% | - Brokers and Clusters - Log Segments and Retention - Producer and Consumer Basics - Replication Factor and ISR - Topics, Partitions, and Offsets |
| Installing and Configuring Kafka | 5-10% | - Broker Configuration Parameters - Partition Assignment Strategies - ZooKeeper vs KRaft Mode - Topic Creation and Configuration |
| Schema Management | 5-10% | - Schema Evolution and Compatibility - Avro Schemas - Schema Registration and Retrieval - Schema Registry Architecture - Protobuf and JSON Schemas |
| Kafka Connect | 10-15% | - Offset Management in Connect - Connect Architecture (Workers, Connectors, Tasks) - Single Message Transformations (SMT) - Converters and Transforms - Source and Sink Connectors - Connector Configuration |
| Developing with Kafka Producers | 15-20% | - Exactly-Once Semantics - Error Handling and Retry Logic - Producer Configuration and Tuning - Serialization (JSON, Avro, Protobuf) - Idempotent Producers - Partitioning Strategies - Producer Interceptors |
| Monitoring and Operations | 5-10% | - Kafka Metrics and Monitoring - Cross-region Replication - Consumer Lag and Health Checks - Disaster Recovery - Log Compaction |
| Kafka Streams | 20-25% | - State Stores and Processors - Exactly-Once Processing - Windowed Operations (Tumbling, Hopping, Session) - Streams Architecture and Topology - Interactive Queries - Transformation Operations (map, filter, join, aggregate) - Testing Kafka Streams Applications |
| Developing with Kafka Consumers | 15-20% | - Consumer Interceptors - Multi-threaded Consumers - Commit Strategies (Auto, Manual, Cooperative) - Offset Management - Consumer Configuration and Tuning - Deserialization - Consumer Groups and Rebalancing |
| Security | 5-10% | - Securing Schema Registry - Authentication (SASL, SSL/TLS) - Encryption in Transit - Authorization (ACLs) |
Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:
1. Which statement describes the storage location for a sink connector's offsets?
A) In a file specified by the offset.storage.file.filename configuration parameter
B) The __consumer_offsets topic, like any other consumer
C) The topic specified in the offsets.storage.topic configuration parameter
D) In memory which is then periodically flushed to a RocksDB instance
2. Which configuration allows more time for the consumer poll to process records?
A) session.timeout.ms
B) heartbeat.interval.ms
C) fetch.max.wait.ms
D) max.poll.interval.ms
3. (You deploy a Kafka Streams application with five application instances.
Kafka Streams stores application metadata using internal topics.
Auto-topic creation is disabled in the Kafka cluster.
Which statement about this scenario is true?)
A) The application will work, but application metadata will not be stored.
B) The application will terminate with a non-retriable exception.
C) The application will continue to work and internal topics will be created, even if auto-topic creation is disabled.
D) The application will be on hold until internal topics are created manually.
4. Which partition assignment minimizes partition movements between two assignments?
A) RangeAssignor
B) RoundRobinAssignor
C) StickyAssignor
D) PartitionAssignor
5. Which statement is true about how exactly-once semantics (EOS) work in Kafka Streams?
A) EOS in Kafka Streams is implemented by creating a separate Kafka topic for deduplication of all messages processed by the application.
B) Kafka Streams disables log compaction on internal changelog topics to preserve all state changes for potential recovery.
C) EOS in Kafka Streams relies on transactional producers to atomically commit state updates to changelog topics and output records to Kafka.
D) Kafka Streams provides EOS by periodically checkpointing state stores and replaying changelogs to recover only unprocessed messages during failure.
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: D | Question # 3 Answer: B | Question # 4 Answer: C | Question # 5 Answer: C |
