Kafka interview questions and answers(MCQ): Test Your Knowledge!

Which of the following is not a valid Kafka consumer group protocol?

RANGE

RoundRobin

Sticky

Eager

Which of the following is NOT a recommended approach for reducing Kafka\'s disk usage?

Decreasing replication factor

Compressing messages

Reducing retention period

Deleting unused topics

What is the purpose of the __consumer_offsets_changelog_changelog topic?

To track changes in consumer offsets changelog

To store actual messages

To handle authentication

To create new topics

What is the purpose of the max.poll.records configuration in Kafka consumers?

To set the maximum number of records returned in a single call to poll()

To set the maximum number of poll calls

To set the maximum number of records per partition

To set the maximum number of records per topic

What are the key components of Kafka?

Topics and Queues

Producers and Consumers

Partitions and Brokers

Both B and C

What is the main difference between Kafka and Apache Ignite?

Kafka is a messaging system, Ignite is an in-memory computing platform

Kafka is newer

Ignite doesn\\\'t support streaming

Kafka doesn\\\'t support distributed computing

What is the purpose of the log.cleaner.threads configuration in Kafka?

To set the number of threads to use for log cleaning

To set the number of cleaner I/O threads

To set the number of background threads

To set the number of compaction threads

What is the role of a Kafka Streams state store changelog topic retention?

To limit the size of state store backups

To encrypt state data

To improve read performance

To handle authentication

What does a Kafka topic\\\'s replication factor determine?

Number of copies of each partition

Number of consumers that can read from the topic

Number of producers that can write to the topic

Maximum size of the topic

How can you monitor the performance of a Kafka cluster?

Using JMX metrics

Only through log files

By manually checking each broker

Performance monitoring is not possible

Which Kafka protocol is used for communication between Kafka Connect workers?

Kafka Connect Protocol

Worker Coordination Protocol

Distributed Mode Protocol

Connect Cluster Protocol

How does Kafka handle data stream denormalization with custom serdes and Protobuf schemas?

Using Kafka Streams API

Automatically in brokers

Only in producers

Not supported

What is the purpose of the fetch.min.bytes configuration property in OpenSearch consumer?

To reduce the number of fetch requests by setting a minimum amount of data to fetch

To set the maximum message size

To control the number of consumers in a group

To manage the replication factor

What is the purpose of setting up OpenSearch on Docker for Apache Kafka?

To enable efficient searching and analytics on Kafka data

To manage Kafka brokers

To produce messages to Kafka

To handle consumer group rebalancing

Which Kafka API is used for implementing custom metrics reporters?

Metrics Reporter API

Monitoring API

JMX API

Metrics API

How can you use Kafka Streams to implement stateful aggregations?

Using state stores and the Aggregator API

Kafka Streams doesn\\\'t support stateful operations

Only through external databases

By writing custom punctuators

How does Kafka handle data stream transformations with custom key-value transformers?

Using Kafka Streams API

Automatically in brokers

Only in producers

Not supported

What is the purpose of the \\\"delivery.timeout.ms\\\" configuration property in Kafka Producer API?

To set the maximum time to wait for a send to complete

To control the producer batch size

To set the acknowledgment level

To limit the number of in-flight requests

What are some examples of data that are transferred through Apache Kafka?

Logs

Metrics

Clickstream data

All of the above

Which of the following is not a valid Kafka log cleanup policy?

delete

compact

delete,compact