Here are some commonly asked interview questions and answers for a Power BI developer position in an MNC:
Q1: What is Power BI?
A1: Power BI is a business analytics service by Microsoft that allows users to create interactive visualizations and business intelligence reports.
Q2: What are the different components of Power BI?
A2: Power BI has four main components: Power BI Desktop, Power BI Service, Power BI Report Server, and Power BI Mobile Apps.
Q3: How do you connect to data sources in Power BI?
A3: You can connect to data sources using Power BI Desktop or the Power BI Service, including Excel files, databases, and cloud-based sources like Azure and Salesforce.
Q4: What is DAX and its use in Power BI?
A4: DAX (Data Analysis Expressions) is a formula language used in Power BI to create calculations and measures.
Q5: How do you create a measure in Power BI?
A5: You can create a measure in Power BI using the DAX formula bar or the "New Measure" button in the "Modeling" tab.
Q6: What is a calculated column in Power BI?
A6: A calculated column is a new column created using DAX formulas that can be used in reports and visualizations.
Q7: How do you optimize performance in Power BI reports?
A7: You can optimize performance by using efficient DAX formulas, reducing data model size, and leveraging Power BI's built-in optimization features.
Q8: How do you secure Power BI reports and data?
A8: You can secure Power BI reports and data using row-level security (RLS), dynamic security, and encryption.
Q9: Can you explain the concept of data modeling in Power BI?
A9: Data modeling involves organizing and structuring data to create a data model that can be used for reporting and analysis.
Q10: How do you deploy and share Power BI reports?
A10: You can deploy and share Power BI reports using the Power BI Service, Power BI Report Server, or Power BI Mobile Apps.
👉Remember to be prepared to provide specific examples and demonstrate your hands-on experience with Power BI during the interview.
Aditi Gupta
Analytics Mentor
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