Apache Kafka - Real-time Stream Processing (Master Class) - Count on KTable

Apache Kafka - Real-time Stream Processing (Master Class) - Count on KTable

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

The video tutorial explains how to perform count, reduce, and aggregate operations on K streams and K tables. It introduces a problem statement involving counting persons by age using Kafka topics. The tutorial highlights the differences between K table and K stream aggregation, emphasizing the importance of handling updates in K tables. It demonstrates the use of group by and count methods to achieve the desired results and concludes with a preview of the next lecture on the aggregate method.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary difference between K table aggregate and K stream aggregate as discussed in the video?

K stream aggregate can handle updates, while K table aggregate cannot.

K stream aggregate is faster than K table aggregate.

K table aggregate can handle updates, while K stream aggregate cannot.

K table aggregate is used for real-time data, while K stream aggregate is not.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it necessary to use K table aggregation for counting people by age?

Because K table aggregation is faster than K stream aggregation.

Because the age of a person can change over time.

Because K table aggregation is easier to implement.

Because the age of a person is constant.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in implementing K table aggregation?

Group the K table by name.

Consume the Kafka topic as a K table.

Print the K table.

Consume the Kafka topic as a K stream.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the K table aggregation handle updates to data, such as a change in age?

It ignores the updates.

It updates the count for both the old and new ages.

It only updates the count if the name changes.

It updates the count for the old age but not for the new age.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What additional method is introduced for more visibility on decreasing values in K table aggregation?

The reduce method.

The count method.

The filter method.

The aggregate method.

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