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Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:

1. Which of the following is NOT a supported serialization format in ksqlDB?

A) BSON
B) Protobuf
C) Avro
D) Delimited

2. You have a consumer group of 12 consumers and when a consumer gets killed by the process management system, rather abruptly, it does not trigger a graceful shutdown of your consumer. Therefore, it takes up to 10 seconds for a rebalance to happen. The business would like to have a 3 seconds rebalance time. What should you do? (select two)

A) Increase heartbeat.interval.ms
B) increase max.poll.interval.ms
C) Increase session.timeout.ms
D) decrease max.poll.interval.ms
E) Decrease heartbeat.interval.ms
F) Decrease session.timeout.ms

3. You create a topic named loT-Data with 10 partitions and replication factor of three.
A producer sends 1 MB messages compressed with Gzip.
Which two statements are true in this scenario?
(Select two.)

A) All compressed messages will be stored in the same topic partition.
B) By default, compression is the producer's responsibility.
C) The message is already compressed so it will not be serialized.
D) Compression type will be stored in batch attributes.

4. I am producing Avro data on my Kafka cluster that is integrated with the Confluent Schema Registry. After a schema change that is incompatible, I know my data will be rejected. Which component will reject the data?

A) Zookeeper
B) The Kafka Broker
C) The Confluent Schema Registry
D) The Kafka Producer itself

5. In Kafka, what are Topics split into?

A) Consumers
B) Sub Topics
C) Chunks
D) Partitions

Solutions: