CCDAK Free Practice Test

To import data from external databases, I should use

1. A. Confluent REST Proxy
2. B. Kafka Connect Sink
3. C. Kafka Streams
4. D. Kafka Connect Source

Correct Answer: D
Kafka Connect Sink is used to export data from Kafka to external databases and Kafka
Connect Source is used to import from external databases into Kafka.

In Kafka, every broker... (select three)

1. A. contains all the topics and all the partitions
2. B. knows all the metadata for all topics and partitions
3. C. is a controller
4. D. knows the metadata for the topics and partitions it has on its disk
5. E. is a bootstrap broker
6. F. contains only a subset of the topics and the partitions

Correct Answer: BEF
Kafka topics are divided into partitions and spread across brokers. Each brokers knows about all the metadata and each broker is a bootstrap broker, but only one of them is elected controller

What are the requirements for a Kafka broker to connect to a Zookeeper ensemble? (select two)

1. A. Unique value for each broker's zookeeper.connect parameter
2. B. Unique values for each broker's broker.id parameter
3. C. All the brokers must share the same broker.id
4. D. All the brokers must share the same zookeeper.connect parameter

Correct Answer: BD
Each broker must have a unique broker id and connect to the same zk ensemble and root zNode

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

1. A. Kerberos
2. B. SASL
3. C. HTTPS (SSL/TLS)
4. D. HTTP

Correct Answer: C
TLS - but it is still called SSL.

A kafka topic has a replication factor of 3 and min.insync.replicas setting of 2. How many brokers can go down before a producer with acks=1 can't produce?

1. A. 3
2. B. 1
3. C. 2

Correct Answer: D
min.insync.replicas does not impact producers when acks=1 (only when acks=all)