CCDAK Online Practice Questions and Answers

What happen when broker.rack configuration is provided in broker configuration in Kafka cluster?

A. You can use the same broker.id as long as they have different broker.rack configuration

B. Replicas for a partition are placed in the same rack

C. Replicas for a partition are spread across different racks

D. Each rack contains all the topics and partitions, effectively making Kafka highly available

You want to sink data from a Kafka topic to S3 using Kafka Connect. There are 10 brokers in the cluster, the topic has 2 partitions with replication factor of 3. How many tasks will you configure for the S3 connector?

A. 10

B. 6

C. 3

D. 2

The exactly once guarantee in the Kafka Streams is for which flow of data?

A. Kafka => Kafka

B. Kafka => External

C. External => Kafka

You have a Kafka cluster and all the topics have a replication factor of 3. One intern at your company stopped a broker, and accidentally deleted all the data of that broker on the disk. What will happen if the broker is restarted?

A. The broker will start, and other topics will also be deleted as the broker data on the disk got deleted

B. The broker will start, and won't be online until all the data it needs to have is replicated from other leaders

C. The broker will crash

D. The broker will start, and won't have any data. If the broker comes leader, we have a data loss

In Avro, removing or adding a field that has a default is a __ schema evolution

A. full

B. backward

C. breaking

D. forward

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

Which of the following is not an Avro primitive type?

A. string

B. long

C. int

D. date

E. null

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)

A. bootstrap.servers

B. partition

C. key.serializer

D. value.serializer

E. key

F. value

What is the protocol used by Kafka clients to securely connect to the Confluent REST Proxy?

A. Kerberos

B. SASL

C. HTTPS (SSL/TLS)

D. HTTP

How much should be the heap size of a broker in a production setup on a machine with 256 GB of RAM, in PLAINTEXT mode?

A. 4 GB

B. 128 GB

C. 16 GB

D. 512 MB