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Microsoft PL-300

Microsoft Power BI Data Analyst

Verified practice questions with detailed answers, clear explanations, and community discussion.

  • 397

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  • 6 days ago

    last updated

  • 4.8/5

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Question 1 of 397

HOTSPOT -

You plan to create the Power BI model shown in the exhibit. (Click the Exhibit tab.)

Exam PL-300: Question 1 - Image 1

The data has the following refresh requirements:

  • Customer must be refreshed daily.
  • Date must be refreshed once every three years.
  • Sales must be refreshed in near real time.
  • SalesAggregate must be refreshed once per week.

You need to select the storage modes for the tables. The solution must meet the following requirements:

  • Minimize the load times of visuals.
  • Ensure that the data is loaded to the model based on the refresh requirements.

Which storage mode should you select for each table? To answer, select the appropriate options in the answer area.

NOTE: Each correct selection is worth one point.

Hot Area:

Exam PL-300: Question 1 - Image 2
Show answer

Suggested answer

Box 1: Dual -
Customer should use the dual storage mode.
Dual: Tables with this setting can act as either cached or not cached, depending on the context of the query that's submitted to the Power BI dataset. In some cases, you fulfill queries from cached data. In other cases, you fulfill queries by executing an on-demand query to the data source.
Note: You set the Storage mode property to one of these three values: Import, DirectQuery, and Dual.

Box 2: Dual -
You can set the dimension tables (Customer, Geography, and Date) to Dual to reduce the number of limited relationships in the dataset, and improve performance.

Box 3: DirectQuery -
Sales should use the DirectQuery storage mode.
DirectQuery: Tables with this setting aren't cached. Queries that you submit to the Power BI datasetג€"for example, DAX queriesג€"and that return data from
DirectQuery tables can be fulfilled only by executing on-demand queries to the data source. Queries that you submit to the data source use the query language for that data source, for example, SQL.

Box 4: Import -
Import: Imported tables with this setting are cached. Queries submitted to the Power BI dataset that return data from Import tables can be fulfilled only from cached data.
Reference:
https://docs.microsoft.com/en-us/power-bi/transform-model/desktop-storage-mode Exam PL-300: Question 1 - Image 3

Question 2 of 397

You have a project management app that is fully hosted in Microsoft Teams. The app was developed by using Microsoft Power Apps.

You need to create a Power BI report that connects to the project management app.

Which connector should you select?

Answer choices
Show answer

Correct answer: C

In a Microsoft Teams environment where the project management app is developed using Microsoft Power Apps, the most appropriate connector to create a Power BI report would be 'Dataverse'. Microsoft Dataverse is a secure and scalable data service and app platform integrated with Power Apps and commonly used for storing application data in environments like Microsoft Teams. Therefore, connecting Power BI to Dataverse will allow for efficient and streamlined data integration from the project management app.

Community votes

76 votes

CSuggested

97%

A

3%

Question 3 of 397

For the sales department at your company, you publish a Power BI report that imports data from a Microsoft Excel file located in a Microsoft SharePoint folder.

The data model contains several measures.

You need to create a Power BI report from the existing data. The solution must minimize development effort.

Which type of data source should you use?

Answer choices
Show answer

Correct answer: A

The most efficient way to create a new Power BI report from the existing data, considering the data model already contains several measures, is to use the Power BI dataset. By connecting to the Power BI dataset from the previously published report, you can reuse all existing measures and data modeling work. This minimizes the development effort because you won't need to redefine measures or data transformations that have already been established.

Community votes

155 votes

ASuggested

73%

B

26%

C

1%

D

1%

Question 4 of 397

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

Each Customer ID represents a unique customer in the Customer table. Each Address ID represents a unique address in the Address table.

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?

Answer choices
Show answer

Correct answer: A

To create a query that has one row per customer and includes the City, State/Region, and Country for each customer, you should merge the Customer and Address tables. By merging, you combine data from both tables based on a common column, in this case, the Address ID. This will allow you to bring together the relevant address information corresponding to each customer.

Community votes

72 votes

ASuggested

100%

Question 5 of 397

HOTSPOT -

You have two Azure SQL databases that contain the same tables and columns.

For each database, you create a query that retrieves data from a table named Customer.

You need to combine the Customer tables into a single table. The solution must minimize the size of the data model and support scheduled refresh in powerbi.com.

What should you do? To answer, select the appropriate options in the answer area.

NOTE: Each correct selection is worth one point.

Hot Area:

Exam PL-300: Question 5 - Image 1
Show answer

Suggested answer

Box 1: Append Queries as New -
When you have additional rows of data that you'd like to add to an existing query, you append the query.
There are two append options:
* Append queries as new displays the Append dialog box to create a new query by appending multiple tables.
* Append queries displays the Append dialog box to add additional tables to the current query.
Incorrect: When you have one or more columns that you'd like to add to another query, you merge the queries.
Box 2: Disable loading the query to the data model
By default, all queries from Query Editor will be loaded into the memory of Power BI Model. You can disable the load for some queries, especially queries that used as intermediate transformation to produce the final query for the model.
Disabling Load doesn't mean the query won't be refreshed, it only means the query won't be loaded into the memory. When you click on Refresh model in Power
BI, or when a scheduled refresh happens even queries marked as Disable Load will be refreshed, but their data will be used as intermediate source for other queries instead of loading directly into the model. This is a very basic performance tuning tip, but very important when your Power BI model grows bigger and bigger.
Reference:
https://docs.microsoft.com/en-us/power-query/append-queries
https://radacad.com/performance-tip-for-power-bi-enable-load-sucks-memory-up Exam PL-300: Question 5 - Image 2

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As this was my first certification exam, I was understandably nervous about what to expect. These study materials made the preparation process much easier, and many of the questions closely reflected those on the actual exam.
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Wasted about a month going through the free dump sites scattered all over reddit, half the answers were wrong and the other half were for a version of the exam that doesn't even exist anymore. Eventually gave in and paid the small fee here, and the difference was night and day.
Alisha Kelly
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Honestly, I had already gone through the official documentation quite thoroughly, but still didn't feel fully confident going in. This helped things finally click for me. I realized I knew the material, but just hadn't connected all the pieces yet.
Casper Claassen
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Used this along with Microsoft Learn and the combo worked really well. The practice questions made the stuff I'd read actually stick. Passed first attempt, no complaints from me.
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I don't usually leave reviews, but this one felt worth sharing. The questions were quite close to what actually appeared on the exam, more than I expected. I spent about a week going through the material before my test, and it helped me feel more prepared.
Remi Nuyts
United States
Passed ITIL 4 Foundation with 87%. Material was enough by itself.
Archie Hopkins
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I had a smooth experience from start to finish. Access was available right away, no technical issues, which made it easy to get started. The content felt relevant and aligned well with what I was looking for.
Nancy Mcbride
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Does what it says it does. Content felt solid, nothing confusing to navigate and I didn't run into any weird issues. I been putting off scheduling the exam for a while and going through this gave me enough confidence to finally book it and pass.
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A very quick response was received via email when a link issue occurred. The study materials provided were high quality and extremely helpful. I was able to complete the test successfully. Many thanks for the excellent support.

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