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Confluent CCDAK Exam Syllabus Topics:

SectionObjectives
Topic 1: Kafka Ecosystem and Confluent Platform- Schema Registry
  • 1. Avro, Protobuf, JSON Schema usage
    - ksqlDB and connectors
    • 1. Kafka Connect basics
      • 2. Stream querying concepts
        Topic 2: Kafka Producers and Consumers- Consumer API
        • 1. Consumer groups
          • 2. Rebalancing and offset commits
            - Producer API
            • 1. Serialization and partitioning strategies
              • 2. Reliability and acknowledgments
                Topic 3: Kafka Fundamentals- Kafka architecture and core concepts
                • 1. Brokers, topics, partitions
                  • 2. Replication and fault tolerance
                    - Data flow in Kafka
                    • 1. Offset management
                      • 2. Producer and consumer model
                        Topic 4: Kafka Streams and Processing- Kafka Streams API
                        • 1. Stream processing fundamentals
                          • 2. Stateful vs stateless processing
                            - Event processing patterns
                            • 1. Exactly-once semantics
                              • 2. Windowing and aggregation

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                                Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions (Q78-Q83):

                                NEW QUESTION # 78
                                Partition leader election is done by

                                Answer: B

                                Explanation:
                                The Controller is a broker that is responsible for electing partition leaders


                                NEW QUESTION # 79
                                A producer is configured with the default partitioner. It is sending records to a topic that is configured with five partitions. The record does not contain any key.
                                What is the result of this?

                                Answer: B

                                Explanation:
                                If a key isnot specified, thedefault Kafka partitioner uses round-robinlogic to assign partitions. This leads toeven distributionof messages across all partitions.
                                FromKafka Producer Design:
                                "If the key is null, the producer will assign the partition in a round-robin fashion to achieve load balancing." There isno error, and partition 0 isnot alwayschosen in this case.
                                Reference:Kafka Producer Partitioner Behavior - Official Docs


                                NEW QUESTION # 80
                                What is the default maximum size of a message the Apache Kafka broker can accept?

                                Answer: B

                                Explanation:
                                The default maximum message size that a Kafka broker accepts is1MB (1,048,576 bytes), controlled by the config propertymessage.max.bytes.
                                FromKafka Broker Configuration Docs:
                                "The default maximum message size is 1MB. To accept larger messages, configure message.max.bytes and the producer's max.request.size." Producers also have a matching limit via max.request.size, and consumers via fetch.message.max.bytes.
                                Reference:Kafka Broker Configuration > message.max.bytes


                                NEW QUESTION # 81
                                A producer application was sending messages to a partition with a replication factor of 2 by connecting to Broker 1 that was hosting partition leader. If the Broker 1 goes down, what will happen?

                                Answer: A

                                Explanation:
                                Once the client connects to any broker, it is connected to the entire cluster and in case of leadership changes, the clients automatically do a Metadata Request to an available broker to find out who is the new leader for the topic. Hence the producer will automatically keep on producing to the correct Kafka Broker


                                NEW QUESTION # 82
                                Which configuration determines how many bytes of data are collected before sending messages to the Kafka broker?

                                Answer: B


                                NEW QUESTION # 83
                                ......

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