Free Certified Developer for Apache Kafka Exam CCDAK Exam Practice Test

What is true about partitions? (select two)

• A broker can have a partition and its replica on its disk
  
• You cannot have more partitions than the number of brokers in your cluster
  
• A broker can have different partitions numbers for the same topic on its disk
  
• Only out of sync replicas are replicas, the remaining partitions that are in sync are also leader
  
• A partition has one replica that is a leader, while the other replicas are followers
  

Which is an optional field in an Avro record?

• doc
  
• name
  
• namespace
  
• fields
  

A Kafka producer application wants to send log messages to a topic that does not include any key. What are the properties that are mandatory to configure for the producer configuration? (select three)

• bootstrap.servers
  
• partition
  
• key.serializer
  
• value.serializer
  
• key
  
• value
  

By default, which replica will be elected as a partition leader? (select two)

• Preferred leader broker if it is in-sync and auto.leader.rebalance.enable=true
  
• Any of the replicas
  
• Preferred leader broker if it is in-sync and auto.leader.rebalance.enable=false
  
• An in-sync replica
  

What is true about replicas ?

• Produce requests can be done to the replicas that are followers
  
• Produce and consume requests are load-balanced between Leader and Follower replicas
  
• Leader replica handles all produce and consume requests
  
• Follower replica handles all consume requests
  

What client protocol is supported for the schema registry? (select two)

• HTTP
  
• HTTPS
  
• JDBC
  
• Websocket
  
• SASL
  

A consumer starts and has auto.offset.reset=latest, and the topic partition currently has data for offsets going from 45 to 2311. The consumer group has committed the offset 643 for the topic before. Where will the consumer read from?

• it will crash
  
• offset 2311
  
• offset 643
  
• offset 45
  

In Kafka Streams, by what value are internal topics prefixed by?

• tasks-<number>
  
• application.id
  
• group.id
  
• kafka-streams-
  

How do you create a topic named test with 3 partitions and 3 replicas using the Kafka CLI?

• bin/kafka-topics.sh --create --broker-list localhost:9092 --replication-factor 3 --partitions 3 --topic test
  
• bin/kafka-topics-create.sh --zookeeper localhost:9092 --replication-factor 3 --partitions 3 --topic test
  
• bin/kafka-topics.sh --create --bootstrap-server localhost:9092 --replication-factor 3 --partitions 3 --topic test
  
• bin/kafka-topics.sh --create --bootstrap-server localhost:2181 --replication-factor 3 --partitions 3 --topic test
  

When using the Confluent Kafka Distribution, where does the schema registry reside?

• As a separate JVM component
  
• As an in-memory plugin on your Zookeeper cluster
  
• As an in-memory plugin on your Kafka Brokers
  
• As an in-memory plugin on your Kafka Connect Workers