Top 20 Interview Questions with Answers for Power BI

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1. What is the difference between Power BI Report Server and Power BI Service?
   Answer: Power BI Report Server is an on-premises reporting solution that allows organizations to create, manage, and distribute Power BI reports within their own network, while Power BI Service is a cloud-based service that allows organizations to create, manage, and distribute Power BI reports and dashboards on the web.
2. How do you create a custom connector in Power BI?
   Answer: To create a custom connector in Power BI, you can use the Power Query SDK and define a connector that connects to a specific data source and retrieves data in a specific format.
3. What is the difference between a calculated field and a calculated column in Power BI?
   Answer: A calculated field is a calculation that is performed on the fly, based on the current filter context, while a calculated column is a static calculation that is performed when the data is loaded into Power BI.
4. How do you create a waterfall chart in Power BI?
   Answer: To create a waterfall chart in Power BI, you can use the Waterfall Chart visual and define the values for the starting point, positive and negative changes, and ending point.
5. What is Power BI Report Builder?
   Answer: Power BI Report Builder is a standalone Windows application that allows users to create and design paginated reports for Power BI Report Server or SQL Server Reporting Services.
6. How do you create a scatter chart in Power BI?
   Answer: To create a scatter chart in Power BI, you can use the Scatter Chart visual and define the X-axis and Y-axis fields, as well as any additional fields for grouping and coloring the data points.
7. What is the difference between Power BI Desktop and Power BI Service? Answer: Power BI Desktop is a Windows application that is used to create, edit, and publish Power BI reports and dashboards, while Power BI Service is a web-based service that allows users to view and interact with Power BI reports and dashboards.
8. How do you create a bar chart in Power BI?
   Answer: To create a bar chart in Power BI, you can use the Bar Chart visual and define the category and value fields, as well as any additional fields for grouping and coloring the bars.
9. What is Power BI Publisher for Excel?
   Answer: Power BI Publisher for Excel is an add-in for Microsoft Excel that allows users to connect Excel workbooks to Power BI and publish data, charts, and tables to Power BI reports and dashboards.
10. How do you create a table in Power BI?
    Answer: To create a table in Power BI, you can use the Table visual and define the fields that you want to display in the table.
11. What is the difference between Power BI and Tableau?
    Answer: Power BI and Tableau are both business intelligence platforms that provide data visualization, reporting, and analysis capabilities. However, Power BI is more tightly integrated with Microsoft technologies, while Tableau has a stronger reputation for advanced analytics and data discovery.
12. How do you create a stacked bar chart in Power BI?
    Answer: To create a stacked bar chart in Power BI, you can use the Stacked Bar Chart visual and define the category and value fields, as well as any additional fields for grouping and coloring the bars.
13. What is a slicer in Power BI?
    Answer: A slicer in Power BI is a visual element that allows users to filter data in a report or dashboard by selecting one or more values from a predefined list.
14. How do you create a funnel chart in Power BI?
    Answer: To create a funnel chart in Power BI, you can use the Funnel Chart visual and define the fields for the segments and values.
15. What is Power BI Mobile?
    Answer: Power BI Mobile is a mobile app that allows users to access and interact with Power BI reports and dashboards on their mobile devices.
16. How do you create a line chart in Power BI?
    Answer: To create a line chart in Power BI, you can use the Line Chart visual and define the X-axis and Y-axis fields, as well as any additional fields for grouping and coloring the lines.
17. What is Power BI Report Server?
    Answer: Power BI Report Server is an on-premises reporting solution that allows organizations to create, manage, and distribute Power BI reports within their own network.
18. How do you create a map in Power BI?
    Answer: To create a map in Power BI, you can use the Map visual and define the location and value fields, as well as any additional fields for grouping and coloring the data points.
19. What is a measure in Power BI?
    Answer: A measure in Power BI is a calculation that is defined using DAX (Data Analysis Expressions) and provides a way to aggregate and analyze data.
20. How do you create a stacked column chart in Power BI?
    Answer: To create a stacked column chart in Power BI, you can use the Stacked Column Chart visual and define the category and value fields, as well as any additional fields for grouping and coloring the columns.

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