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Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:
1. 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) Key
C) Broker
D) Value
2. Your configuration parameters for a Source connector and Connect worker are:
* offset.flush.interval.ms=60000
* offset.flush.timeout.ms=500
* offset.storage.topic=connect-offsets
* offset.storage.replication.factor=-1Which four statements match the expected behavior?(Select four.)
A) The connector will wait 500ms for offset data to be committed.
B) The connector will commit offsets to a topic called connect-offsets.
C) The connector will wait 60000ms before trying to commit offsets for tasks.
D) The offsets topic will use the broker default replication factor.
3. To transform data from a Kafka topic to another one, I should use
A) Consumer + Producer
B) Kafka Connect Sink
C) Kafka Streams
D) Kafka Connect Source
4. You have a Kafka consumer in production actively reading from a critical topic.
You need to update the offset of your consumer to start reading from the beginning of the topic.
Which action should you take?
A) Start a new consumer application with the same consumer group id.
B) Temporarily configure the topic's retention.ms parameter to 0 to empty the topic.
C) Update the consumer configuration by setting auto.offset.reset=earliest.
D) Update the consumer group's offset to the earliest position using the kafka-consumer-groups CLI tool.
5. What is a generic unique id that I can use for messages I receive from a consumer?
A) topic + partition + offset
B) topic + partition + timestamp
C) topic + timestamp
Solutions:
Question # 1 Answer: A | Question # 2 Answer: A,B,C,D | Question # 3 Answer: C | Question # 4 Answer: D | Question # 5 Answer: A |