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Confluent CCDAK: Confluent Certified Developer for Apache Kafka Certification Examination

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Question 1

What is not a valid authentication mechanism in Kafka?

A. SASL/GSSAPI

B. SASL/SCRAM

C. SAML

D. SSL

Correct Answer:C
Learn more about security herehttps://kafka.apache.org/documentation/#security

Question 2

Which of the following statements are true regarding the number of partitions of a topic?

A. The number of partitions in a topic cannot be altered

B. We can add partitions in a topic by adding a broker to the cluster

C. We can add partitions in a topic using the kafka-topics.sh command

D. We can remove partitions in a topic by removing a broker

E. We can remove partitions in a topic using the kafka-topics.sh command

Correct Answer:C
We can only add partitions to an existing topic, and it must be done using the kafka- topics.sh command

Question 3

Your manager would like to have topic availability over consistency. Which setting do you need to change in order to enable that?

A. compression.type

B. unclean.leader.election.enable

C. min.insync.replicas

Correct Answer:B
unclean.leader.election.enable=true allows non ISR replicas to become leader, ensuring availability but losing consistency as data loss will occur

Question 4

Which of the following is not an Avro primitive type?

A. string

B. long

C. int

D. date

E. null

Correct Answer:D
date is a logical type

Question 5

What is a generic unique id that I can use for messages I receive from a consumer?

A. topic + partition + timestamp

B. topic + partition + offset

C. topic + timestamp

Correct Answer:B
(Topic,Partition,Offset) uniquely identifies a message in Kafka

Question 6

A Zookeeper ensemble contains 5 servers. What is the maximum number of servers that can go missing and the ensemble still run?

A. 3

B. 4

C. 2

D. 1

Correct Answer:C
majority consists of 3 zk nodes for 5 nodes zk cluster, so 2 can fail

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