Question 1

What is the primary function of DAX in Power BI?

Accepted Answer

Data manipulation and visualization

Answer

Data storage

Answer

Data encryption

Answer

User interface design

Question 2

How can Chat GPT assist in creating DAX functions?

Accepted Answer

By generating DAX code snippets based on user input

Answer

By configuring Power BI security settings

Answer

By managing data sources and connections

Answer

By designing the visual layout of Power BI dashboards

Question 3

What is the advantage of using Chat GPT for generating DAX functions?

Accepted Answer

It simplifies the process of writing complex DAX expressions

Answer

It enhances the security of the Power BI environment

Answer

It automates the refresh of Power BI datasets

Answer

It reduces the overall size of the Power BI file

Question 4

Which DAX function would you use to calculate the total sales amount from a 'Sales' table in Power BI?

Accepted Answer

SUM(Sales[Amount])

Answer

AVERAGE(Sales[Amount])

Answer

COUNT(Sales[Amount])

Answer

MAX(Sales[Amount])

Question 5

How does the Co-pilot feature improve the DAX function creation process?

Accepted Answer

By providing real-time suggestions and corrections

Answer

By automating data refresh schedules

Answer

By enhancing the visual appeal of reports

Answer

By integrating third-party data sources

Question 6

Which of the following scenarios best illustrates the use of the DAX CALCULATE function?

Accepted Answer

Applying multiple filters to calculate total sales for a specific region and product category

Answer

Counting the number of transactions in a sales table without considering filters

Answer

Finding the maximum sales amount recorded in a specific month without applying additional filters

Answer

Calculating the average sales amount for all products without any filters

Question 7

What is a common use case for the DAX RELATED function in Power BI?

Accepted Answer

To retrieve data from related tables in a data model

Answer

To create new visualizations in a Power BI dashboard

Answer

To schedule automatic data refreshes

Answer

To set user permissions and access levels

Question 8

Which DAX function is used to create a new calculated column that categorizes sales amounts into 'High', 'Medium', and 'Low' categories?

Accepted Answer

SWITCH(TRUE(), [Sales] > 1000, "High", [Sales] > 500, "Medium", "Low")

Answer

IF([Sales] > 1000, "High", [Sales] > 500, "Medium", "Low")

Answer

IIF([Sales] > 1000, "High", [Sales] > 500, "Medium", "Low")

Answer

CHOOSE([Sales] > 1000, "High", [Sales] > 500, "Medium", "Low")

Question 9

How does the SUMX function differ from the SUM function in DAX?

Accepted Answer

SUMX performs row-by-row calculations and then aggregates the results, whereas SUM simply aggregates column values

Answer

SUMX is only applicable to measures, while SUM is used for calculated columns

Answer

SUMX can handle date data, while SUM cannot

Answer

SUMX is used for text data, while SUM is used for numerical data

Question 10

In the context of DAX, what is the purpose of the FILTER function?

Accepted Answer

To create a subset of data based on specified conditions

Answer

To connect Power BI to external data sources

Answer

To automate the data refresh process

Answer

To apply visual formatting to a Power BI report

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