Are you preparing for the PL-300 exam? These PL-300 practice questions can help you review important Power BI topics.
The PL-300 exam tests your skills in four main areas. These include preparing data, modeling data, creating reports, and managing Power BI.
Microsoft currently lists four skill areas for the exam. Each of the first three areas accounts for 25–30% of the exam. Managing and securing Power BI accounts for 15–20%.
PL-300 Practice Questions: Data Preparation
1. Which Power BI tool is used to clean data?
Answer: Power Query
Power Query helps you clean and transform data. You can also use it to combine and prepare data before loading it into Power BI.
2. What is the purpose of data profiling?
Answer: To understand data quality
Data profiling helps you check your data. For example, you can find missing values, errors, and unusual data.
This makes it easier to fix data quality problems before analysis.
3. What is the difference between Merge and Append?
Answer: Merge joins columns, while Append adds rows
Merge combines tables by using matching columns.
In contrast, Append combines rows from two or more tables.
Therefore, you should use Merge when you need to join related data. Use Append when you need to stack similar data.
4. Which data type should you use for a date column?
Answer: Date
Use the Date data type for columns that contain dates.
The correct data type helps Power BI filter and analyze dates correctly.
5. What is Power Query mainly used for?
Answer: Data preparation
Power Query is used to prepare data for analysis.
You can use it to clean, transform, combine, and load data. It also helps you resolve data quality issues.
PL-300 Practice Questions: Data Modeling
6. What is a relationship in Power BI?
Answer: A connection between tables
A relationship connects two or more tables in a Power BI model.
As a result, Power BI can use related data together when you create reports and calculations.
7. What is a measure in Power BI?
Answer: A DAX calculation
A measure uses DAX to calculate a value.
For example, you can create measures for total sales, average sales, or profit.
Measures also respond to filters used in a report.
8. What does the CALCULATE function do in DAX?
Answer: It changes the filter context of a calculation
CALCULATE is an important DAX function.
It evaluates an expression after changing the filter context. Therefore, it is useful for creating many advanced Power BI calculations.
9. Why is a date table useful?
Answer: It supports date-based analysis
A date table helps you analyze data by year, quarter, month, and day.
It is especially useful when creating time-based calculations in DAX.
10. What is a star schema?
Answer: A model with fact and dimension tables
A star schema normally contains a central fact table and related dimension tables.
For example, a sales fact table can connect to product, customer, and date dimensions.
This structure can make a Power BI model easier to understand and maintain.
PL-300 Practice Questions: Reports and Visualizations
11. Which visual is useful for showing a trend over time?
Answer: A line chart
A line chart is useful for showing changes over time.
For example, you can use it to display monthly sales or yearly revenue.
12. What is a slicer used for?
Answer: Filtering report data
A slicer allows users to filter report data.
For example, a user can select a year, product, or region. The related visuals can then update based on that selection.
13. What is drillthrough used for?
Answer: Moving from summary information to detailed information
Drillthrough lets users move from a summary view to a detailed report page.
For example, a sales report can show total sales by region. Users can then drill through to see detailed sales for a selected region.
14. What are bookmarks used for?
Answer: Saving a report view
Bookmarks save the current state of a Power BI report page.
You can also use bookmarks with buttons and navigation. This makes reports more interactive.
15. Why is report accessibility important?
Answer: It helps more users understand and use reports
Accessible reports are easier for different users to understand.
For example, clear labels, good layouts, and readable visuals can improve the report experience.
Microsoft includes report accessibility in the current PL-300 skills measured.
PL-300 Practice Questions: Power BI Service and Security
16. What is a Power BI workspace?
Answer: A place to create and manage Power BI content
A workspace is used to manage Power BI content.
For example, it can contain reports, dashboards, and semantic models. Workspaces also support collaboration and content management.
17. What is row-level security?
Answer: A way to control which rows users can see
Row-level security, or RLS, controls the data that different users can access.
For example, a regional manager could see sales for their region without seeing sales data for other regions.
18. When might you need a Power BI gateway?
Answer: When Power BI needs to connect to certain on-premises data
A gateway can connect Power BI to supported data sources that are located on-premises.
This can allow Power BI to refresh or access data that is not stored directly in the cloud.
19. What is a scheduled refresh?
Answer: An automatic update of data
Scheduled refresh allows Power BI to update a semantic model at specific times.
Therefore, users can work with more recent data without manually refreshing the model each time.
20. What score is required to pass the PL-300 exam?
Answer: 700 or higher
Microsoft states that a score of 700 or higher is required to pass the PL-300 exam. Microsoft also provides a free practice assessment to help candidates prepare.
How to Use These PL-300 Practice Questions
Do not focus only on memorizing the answers.
Instead, try to understand why each answer is correct.
You should also practice Power BI in a real environment. Work with Power Query, data models, DAX, reports, and security.
Hands-on practice can help you understand how Power BI works in real projects.
Important PL-300 Exam Topics
The current PL-300 exam covers four major areas.
Prepare the Data
This area covers tasks such as connecting to data, cleaning data, transforming data, and loading data.
Model the Data
This area includes relationships, date tables, DAX calculations, and model performance.
Visualize and Analyze the Data
This area covers report creation, visual selection, filters, slicers, drillthrough, bookmarks, and report accessibility.
Manage and Secure Power BI
This area covers workspaces, dashboards, refresh, gateways, permissions, and row-level security.
PL-300 Exam Preparation Tips
Follow these simple tips when preparing for the exam.
1. Practice Power Query
Learn how to clean and transform different types of data.
2. Understand Data Modeling
Practice relationships, fact tables, dimension tables, and star schemas.
3. Learn DAX
Focus on measures, filter context, and the CALCULATE function.
4. Build Power BI Reports
Create reports with charts, slicers, filters, bookmarks, and drillthrough pages.
5. Learn Power BI Security
Understand workspaces, permissions, gateways, refresh, and row-level security.
6. Take Practice Tests
Use PL-300 practice questions to find topics that need more study.
7. Check the Latest Microsoft Study Guide
Microsoft updates certification exams from time to time.
Therefore, check the latest PL-300 study guide before your exam. The current skills measured are listed as of April 20, 2026.
Power BI Training in Hyderabad
If you are looking for Power BI training in Hyderabad, practice questions can be useful alongside hands-on training.
However, practice questions should not replace practical experience.
Work with real datasets and create Power BI reports. This approach can help you build stronger skills for both the PL-300 exam and real-world Power BI projects.
Final Thoughts
These PL-300 practice questions can help you review important Power BI concepts.
However, passing the exam requires more than memorizing answers.
Focus on data preparation, data modeling, DAX, visualization, report design, and Power BI security.
Most importantly, combine practice questions with hands-on Power BI exercises.
Before your exam, review the latest Microsoft PL-300 study guide. This helps ensure that your preparation matches the current exam skills.
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