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Microsoft DA-100 Exam Actual Questions

The questions for DA-100 were last updated on Feb. 29, 2024.
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  • Viewing questions 1-4 out of 101 questions

Topic 1 - Question Set 1

Question #1 Topic 1

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?

  • A. Implement row-level security (RLS) so that the report recipients can only see results based on the emails they sent.
  • B. Remove the Subject and Body columns during the import.
  • C. From Model view, set the Subject and Body columns to Hidden.
Reveal Solution Hide Solution   Discussion   37

Correct Answer: B 🗳️
Incorrect Answers:
A, C: Does not reduce the size of the model.

Question #2 Topic 1

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.

  • A. Group the impressions by Ad_id, Site_name, and Impression_date. Aggregate by using the CountRows function.
  • B. Create one-to-many relationships between the tables.
  • C. Create a calculated measure that aggregates by using the COUNTROWS function.
  • D. Create a calculated table that contains Ad_id, Site_name, and Impression_date.
Reveal Solution Hide Solution   Discussion   68

Correct Answer: AB 🗳️

Question #3 Topic 1

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?

  • A. video
  • B. custom streaming data
  • C. text box
  • D. web content
Reveal Solution Hide Solution   Discussion   18

Correct Answer: B 🗳️
The only way to visualize a streaming dataset is to add a tile and use the streaming dataset as a custom streaming data source.
Reference:
https://docs.microsoft.com/en-us/power-bi/connect-data/service-real-time-streaming

Question #4 Topic 1

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?

  • A. Show whitespace
  • B. Column profile
  • C. Column distribution
  • D. Column quality
Reveal Solution Hide Solution   Discussion   39

Correct Answer: D 🗳️
Column quality: In this section, we can easily see valid, Error and Empty percentage of data values associated with the Selected table.
Note: In Power Query Editor, Under View tab in Data Preview Section we can see the following data profiling functionalities:
✑ Column quality
✑ Column distribution
✑ Column profile
Reference:
https://community.powerbi.com/t5/Community-Blog/Data-Profiling-in-Power-BI-Power-BI-Update-April-2019/ba-p/674555

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A (35%)
C (25%)
B (20%)
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