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Confluent CCDAK Exam Syllabus Topics:

Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:

1. What are two examples of performance metrics?
(Select two.)

A) Time of last failed login
B) incoming-byte-rate
C) total-login-attempts
D) Number of active user sessions
E) fetch-rate
F) Number of active users

2. Match the testing tool with the type of test it is typically used to perform.

3. (You are writing a producer application and need to ensure proper delivery.
You configure the producer with acks=all.
Which two actions should you take to ensure proper error handling?
Select two.)

A) Check the value of ProducerRecord.status().
B) Surround the call to producer.send() with a try/catch block to catch KafkaException.
C) Use a callback argument in producer.send() where you check delivery status.
D) Check that producer.send() returned a RecordMetadata object and is not null.

4. Which two statements are correct about transactions in Kafka?
(Select two.)

A) Transactions are only possible when writing messages to a topic with single partition.
B) Information about producers and their transactions is stored in the _transaction_state topic.
C) All messages from a failed transaction will be deleted from a Kafka topic.
D) Transactions guarantee at least once delivery of messages.
E) Consumers can consume both committed and uncommitted transactions.

5. (You have a topic with four partitions. The application reading this topic is using a consumer group with two consumers.
Throughput is smoothly distributed among partitions, but application lag is increasing.
Application monitoring shows that message processing is consuming all available CPU resources.
Which action should you take to resolve this issue?)

A) Decrease the max.poll.records property of consumers.
B) Increase the max.poll.records property of consumers.
C) Add more partitions to the topic to increase the level of parallelism of the processing.
D) Add more consumers to increase the level of parallelism of the processing.

Solutions: