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Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:

1. What is encoding and decoding of a message also known as?

A) Scalability and fault tolerance
B) Serialization and deserialization
C) Aggregation and deaggregation
D) Publish and subscribe

2. Consumer failed to process record # 10 and succeeded in processing record # 11. Select the course of action that you should choose to guarantee at least once processing

A) Commit offsets at 11
B) Commit offsets at 10
C) Do not commit until successfully processing the record #10

3. Which configurations define which connector is deployed?

A) key. converter
B) connector.class
C) rest. extension. classes
D) value.converter

4. Your application is consuming from a topic configured with a deserializer.
It needs to be resilient to badly formatted records ("poison pills"). You surround the poll() call with a try/catch for RecordDeserializationException.
You need to log the bad record, skip it, and continue processing.
Which action should you take in the catch block?

A) Throw a runtime exception to trigger a restart of the application.
B) Log the bad record, no other action needed.
C) Log the bad record and seek the consumer to the offset of the next record.
D) Log the bad record and call the consumer.skip() method.

5. What data format isn't natively available with the Confluent REST Proxy?

A) binary
B) protobuf
C) json
D) avro

Solutions: