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Confluent Certified Developer for Apache Kafka Certification Examination Sample Questions:

1. This schema excerpt is an example of which schema format?
package com.mycorp.mynamespace;
message SampleRecord {
int32 Stock = 1;
double Price = 2;
string Product_Name = 3;
}

A) Protobuf
B) JSON Schema
C) YAML
D) Avro

2. Which tool can you use to modify the replication factor of an existing topic?

A) kafka-reassign-partitions.sh
B) kafka-topics.sh
C) kafka-reassign-topics.sh
D) kafka-recreate-topic.sh

3. You need to consume messages from Kafka using the command-line interface (CLI).
Which command should you use?

A) kafka-consume
B) kafka-get-messages
C) kafka-console-consumer
D) kafka-consumer

4. What is a consequence of increasing the number of partitions in an existing Kafka topic?

A) Existing data will be redistributed across the new number of partitions temporarily increasing cluster load.
B) Consumers will need to process data from more partitions which will significantly increase consumer lag.
C) Records with the same key could be located in different partitions.
D) The acknowledgment process will increase latency for producers using acks=all.

5. (A stream processing application tracks user activity in online shopping carts, including items added, removed, and ordered throughout the day for each user.
You need to capture data to identify possible periods of user inactivity.
Which type of Kafka Streams window should you use?)

A) Tumbling
B) Sliding
C) Session
D) Hopping

Solutions: