What are the interview questions that can be asked in Microsoft Power BI?

Interview questions for Microsoft Power BI can cover a range of topics, including Power BI Desktop, Power BI Service, DAX (Data Analysis Expressions) language, data modeling, and visualization. Here are some common interview questions related to Microsoft Power BI:

Power BI Basics:

1. What is Power BI?

   • Briefly explain what Power BI is and its key components.

2. Differentiate between Power BI Desktop and Power BI Service.

   • Describe the main functionalities of Power BI Desktop and Power BI Service.

Power BI Desktop:

3. Explain the purpose of Power BI Desktop.

   • Discuss how Power BI Desktop is used in the data analysis and visualization process.

4. What is Power Query in Power BI?

   • Describe the role of Power Query in data transformation and cleaning.

5. How do you import data in Power BI Desktop?

   • Explain the process of importing data from various sources into Power BI Desktop.

Data Modeling:

6. What is data modeling in Power BI?

   • Discuss the importance of data modeling in creating relationships between tables.

7. Explain the concept of relationships in Power BI.

   • Describe how relationships between tables are established and managed.

8. What is a calculated column and a measure in Power BI?

   • Differentiate between calculated columns and measures, and provide examples.

DAX (Data Analysis Expressions):

9. What is DAX?

   • Provide an overview of Data Analysis Expressions and its role in Power BI.

10. Explain the CALCULATE function in DAX.

    • Discuss how the CALCULATE function is used to modify filter context in DAX.

11. What is the difference between ALL and ALLEXCEPT in DAX?

    • Compare the usage of ALL and ALLEXCEPT functions in altering filter context.

Visualization:

12. How do you create a calculated column in Power BI?

    • Walk through the steps to create a calculated column using DAX.

13. Explain the drill-down and drill-up features in Power BI visuals.

    • Discuss how users can drill down or drill up in visualizations to explore data.

14. What are the various types of visuals available in Power BI?

    • List and briefly explain different types of visualizations that can be created in Power BI.

Power BI Service:

15. What is Power BI Service?

    • Provide an overview of Power BI Service and its role in sharing and collaborating on Power BI content.

16. Explain the process of sharing a Power BI report.

    • Describe how reports and dashboards are shared with others using Power BI Service.

17. What are Power BI gateways?

    • Discuss the purpose of Power BI gateways and their role in connecting to on-premises data sources.

General:

18. How do you handle data refresh in Power BI?

    • Explain the methods and considerations for refreshing data in Power BI.

19. Can you integrate Power BI with other Microsoft products?

    • Discuss any integrations or compatibility with tools like Excel, SharePoint, or Azure.

20. Describe a challenging Power BI project you worked on.

    • Share your experience in handling a complex Power BI project, including challenges faced and solutions implemented.

These questions cover a range of Power BI topics, and the interviewer may tailor questions based on the specific role and level of expertise required. It's essential to be prepared to demonstrate both theoretical knowledge and practical application of Power BI concepts.