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Confluent CCDAK Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Developing with Kafka Producers | 15-20% | - Partitioning Strategies - Idempotent Producers - Error Handling and Retry Logic - Producer Interceptors - Exactly-Once Semantics - Producer Configuration and Tuning - Serialization (JSON, Avro, Protobuf) |
| Kafka Connect | 10-15% | - Converters and Transforms - Offset Management in Connect - Connect Architecture (Workers, Connectors, Tasks) - Source and Sink Connectors - Single Message Transformations (SMT) - Connector Configuration |
| Installing and Configuring Kafka | 5-10% | - Topic Creation and Configuration - Partition Assignment Strategies - ZooKeeper vs KRaft Mode - Broker Configuration Parameters |
| Kafka Streams | 20-25% | - Testing Kafka Streams Applications - Streams Architecture and Topology - Exactly-Once Processing - Interactive Queries - Transformation Operations (map, filter, join, aggregate) - Windowed Operations (Tumbling, Hopping, Session) - State Stores and Processors |
| Kafka Fundamentals | 10-15% | - Replication Factor and ISR - Producer and Consumer Basics - Topics, Partitions, and Offsets - Brokers and Clusters - Log Segments and Retention |
| Developing with Kafka Consumers | 15-20% | - Consumer Groups and Rebalancing - Multi-threaded Consumers - Commit Strategies (Auto, Manual, Cooperative) - Consumer Interceptors - Offset Management - Deserialization - Consumer Configuration and Tuning |
| Schema Management | 5-10% | - Schema Evolution and Compatibility - Schema Registration and Retrieval - Protobuf and JSON Schemas - Avro Schemas - Schema Registry Architecture |
| Monitoring and Operations | 5-10% | - Cross-region Replication - Kafka Metrics and Monitoring - Disaster Recovery - Log Compaction - Consumer Lag and Health Checks |
| Security | 5-10% | - Authentication (SASL, SSL/TLS) - Securing Schema Registry - Encryption in Transit - Authorization (ACLs) |
Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:
Question 1
Which two producer exceptions are examples of the class RetriableException? (Select two.)
A. LeaderNotAvailableException
B. AuthorizationException
C. RecordTooLargeException
D. NotEnoughReplicasException
Question 2
(You need to send a JSON message on the wire. The message key is a string.
How would you do this?)
A. Specify a value serializer class for the JSON contents of the message's value. Set a key serializer for the string value.
B. Specify a value serializer class for the JSON contents of the message's value. Set the key serializer class to JSON.
C. Specify a value serializer class for the JSON contents of the message's value. Set the key serializer class to null.
D. Specify a key serializer class for the JSON contents of the message's value. Set the value serializer class to null.
Question 3
(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. 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.
B. Use a KStream-KTable join; Kafka Streams will automatically repartition the topics to satisfy the co- partitioning constraint.
C. Create as many Kafka Streams application instances as the maximum number of partitions of the two topics and use a KStream-KTable join.
D. Use a GlobalKTable for one of the topics where data does not change frequently and use a KStream- GlobalKTable join.
Question 4
You need to collect logs from a host and write them to a Kafka topic named 'logs-topic'. You decide to use Kafka Connect File Source connector for this task.
What is the preferred deployment mode for this connector?
A. Standalone mode
B. Parallel mode
C. Distributed mode
D. SingleCluster mode
Question 5
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. Header
B. Value
C. Key
D. Broker
Solutions:
| Question 1 Answer: A,D | Question 2 Answer: A | Question 3 Answer: A,D | Question 4 Answer: A | Question 5 Answer: A |
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