Power BI Interview Questions and Answers Latest Update 2025 : Power BI is one of the most popular business intelligence tools used for data analysis and visualization. You are Searching a Power BI Developer Job , Prepare this Power BI Interview Questions to get Success your Career . Here are some important Power BI Entry level and Advance Level Interview Questions and Answers .
Basic Power BI Interview Questions
1. What is Power BI?
Power BI is a data visualization and business intelligence tool developed by Microsoft. Power BI allows users to connect multiple data sources, transform data and create interactive reports and dashboards.
2. What are the key components of Power BI?
Power BI has several key components are:
| Power BI Desktop – A Windows-based application for creating reports. |
| Power BI Service – A cloud-based platform for sharing reports. |
| Power BI Mobile – A mobile app for accessing reports on the go. |
| Power BI Gateway – A tool to connect on-premises data with Power BI Service. |
| Power Query – A tool for data transformation and preparation |
.3. What are the different types of filters in Power BI?
Power BI provides various filtering options, including:
Visual Filters – Apply filters to a specific visualization.
Page Filters – Apply filters to an entire report page.
Report Filters – Apply filters to the whole report.
4. What are the types of Power BI licenses?
Power BI provides different licenses based on user requirements :
Power BI Free : Basic access with limited features.
Power BI Pro : Includes collaboration and sharing options.
Power BI Premium : Offers advanced AI capabilities and large-scale data management.
Intermediate Power BI Interview Questions and Answers Latest Update 2025
5. What is DAX in Power BI?
DAX (Data Analysis Expressions) is a formula language used in Power BI for creating calculated columns, measures, and custom tables.
6. What is the difference between Power BI and Excel?
Excel : Data Visualization
Advanced : interactive reports Basic charts and graphs
Data Handling Handles large datasets
Limited data capacity Sharing
Cloud-based sharing File-based sharing
7. How do you refresh data in Power BI?
The Power Bi Data Refreshed in two ways they are :
Manual Refresh : Click on the Refresh button in Power BI Desktop.
Scheduled Refresh : Set up automatic refresh in Power BI Service.
8. What are relationships in Power BI?
Relationships in Power BI define the connection between different tables using common fields. Power BI supports one to one, one to many, and many to many relationships. Power BI Interview Questions and Answers Latest Update 2025
9. What is a Power BI Data Model?
A Power BI Data Model is a structured framework that organizes data into tables, relationships and measures allowing for efficient data analysis and visualization.
10. What are calculated columns and measures in Power BI?
Calculated Columns : Computed at the row level and stored in a table.
Measures : Computed at the query level and used in aggregations.
Advanced Power BI Interview Questions and Answers Latest Update 2025
11. What is Row Level Security (RLS) in Power BI?
Row Level Security (RLS) restricts data access for specific users based on roles. It is implemented using DAX expressions in Power BI Desktop.
12. What is the difference between Direct Query and Import Mode?
Direct Query : Connects to a live data source without importing data.
Import Mode : Imports data into Power BI for faster performance.
13. How do you optimize Power BI reports for performance?
Power BI Interview Questions and Answers Latest Update 2025 improve report performance :
- Use aggregated tables instead of detailed data.
- Reduce the number of visuals on a page.
- Use efficient DAX formulas.
- Avoid unnecessary calculated columns.
14. What is the purpose of Power BI Bookmarks?
Power BI Bookmarks allow users to save specific views of a report, helping in storytelling and enhancing user experience.
15. What are Power BI Themes?
Power BI Themes allow users to customize the look and feel of reports . user Can applying predefined color schemes and formatting settings.
16. What is the difference between Power BI Service and Power BI Report Server?
Power BI Service : A cloud-based platform for report sharing.
Power BI Report Server : An on-premises solution for hosting and managing Power BI reports.
17. What is Power BI Aggregations?
Power BI Aggregations improve performance by pre-calculating summarized data instead of processing raw data during runtime.
18. What is the difference between a measure and a KPI in Power BI?
Measure : A calculated value used for aggregation.
KPI (Key Performance Indicator) : A visual representation that tracks business goals.
19. How does Power BI integrate with Azure?
Power BI integrates with Azure services like Azure Synapse Analytics, Azure Data Factory, and Azure Machine Learning to enable advanced analytics and big data processing.
20. What are the different types of Power BI visuals?
Power BI offers various visual types, including:
Bar Charts : Compare different categories.
Line Charts : Show trends over time.
Pie Charts : Display proportions.
Tables and Matrices : Show detailed data.
Maps : Visualize geographic data.
Custom Visuals : Add visuals from the Power BI marketplace.
21. What is Power Query in Power BI?
Power Query is a data transformation and preparation tool that helps users clean, merge and shape data before loading it into Power BI.
22. What is the difference between a dataflow and a dataset in Power BI?
Dataflow : A collection of tables created and managed in the Power BI Service.
Dataset : A structured collection of data loaded into Power BI for reporting.
23. What are drill-through and drill-down in Power BI?
Drill-Through : Allows users to navigate to a detailed report based on a selected data point.
Drill-Down : Enables users to explore data at different levels within a visual.
24. What is the difference between slicers and filters in Power BI?
Slicers : Provide a user-friendly way to filter data directly on reports.
Filters : Apply conditions to limit data in visuals and reports.
25. What are composite models in Power BI?
Composite models allow users to combine Direct Query and Import Mode within the same dataset for flexibility in data storage and performance. Power BI Interview Questions and Answers Latest Update 2025