DA-100 Practice Test Questions – Analyzing Data with Microsoft Power BI

1. You need to create a calculated column to display the month based on the reporting requirements.

Which DAX expression should you use?

2. What is the minimum number of datasets and storage modes required to support the reports?

3. You have a large dataset that contains more than 1 million rows. The table has a datetime column named Date.

You need to reduce the size of the data model.

What should you do?

4. You have a custom connector that returns ID, From, To, Subject, Body, and Has Attachments for every email sent during the past year. More than 10 million records are returned.

You build a report analyzing the internal networks of employees based on whom they send emails to.

You need to prevent report recipients from reading the analyzed emails. The solution must minimize the model size.

What should you do?

5. You have the tables shown in the following table.

The Impressions table contains approximately 30 million records per month.

You need to create an ad analytics system to meet the following requirements:

– Present ad impression counts for the day, campaign, and Site_name. The analytics for the last year are required.

– Minimize the data model size.

Which two actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

6. Your company has training videos that are published to Microsoft Stream. You need to surface the videos directly in a Microsoft Power BI dashboard.

Which type of tile should you add?

7. You open a query in Power Query Editor.

You need to identify the percentage of empty values in each column as quickly as possible.

Which Data Preview option should you select?

8. You have a prospective customer list that contains 1,500 rows of data.

The list contains the following fields:

– First name

– Last name

– Email address

– State/Region

– Phone number

You import the list into Power Query Editor.

You need to ensure that the list contains records for each State/Region to which you want to target a marketing campaign.

Which two actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

9. You import two Microsoft Excel tables named Customer and Address into Power Query.

Customer contains the following columns:

– Customer ID

– Customer Name

– Phone

– Email Address

– Address ID

Address contains the following columns:

– Address ID

– Address Line 1

– Address Line 2

– City

– State/Region

– Country

– Postal Code

The Customer ID and Address ID columns represent unique rows.

You need to create a query that has one row per customer. Each row must contain City, State/Region, and Country for each customer.

What should you do?

10. You have the following three versions of an Azure SQL database:

– Test

– Production

– Development

You have a dataset that uses the development database as a data source.

You need to configure the dataset so that you can easily change the data source between the development, test, and production database servers from powerbi.com.

Which should you do?