*Advanced Power Bi Interview concepts* 1. Row-level security in Power BI restricts data access based on user roles, ensuring users only see authorized data. Implementation involves creating roles and defining filters. 2. Calculated tables are created using DAX expressions to derive new tables from existing data. They're useful for complex calculations or aggregations not possible with standard tables. 3. DirectQuery retrieves data directly from the data source, Live Connection connects to Power BI datasets, and Import Data stores data in Power BI files. Each mode has its use cases based on data freshness and performance requirements. 4. Performance optimization involves minimizing visuals, using summarized data, and leveraging features like aggregations and composite models. 5. DAX (Data Analysis Expressions) is a formula language in Power BI for creating custom calculations. An example could be a DAX formula to calculate a rolling average. 6. Power Query is used for data transformation in Power BI. Common techniques include filtering, cleaning, and merging data from various sources. 7. Power BI Data Model organizes data for reporting. Relationships between tables impact how data is joined and presented in reports. 8. Custom visuals or extensions in Power BI can be created using tools like Power BI Developer Tools. They are useful for unique visualizations or specific business needs. 9. Power BI Gateway allows secure data transfer between on-premises and cloud-based data sources. It's essential for corporate environments to maintain data connectivity. 10. Power BI Desktop is for report creation, Power BI Service is for publishing and sharing reports, and Power BI Mobile is for accessing reports on mobile devices. They collaborate to form a comprehensive Power BI workflow. 11. Incremental data refresh involves updating only new or modified data, reducing the refresh time and improving performance. 12. Dynamic security roles in Power BI restrict data based on user attributes, ensuring personalized access in multi-user environments. 13. Paginated reports in Power BI offer pixel-perfect, print-ready reports suitable for formal documents. They are chosen for specific reporting needs. 14. Drill-through in Power BI enables users to navigate from summary to detailed data. Configuration involves defining drill-through pages and use cases vary based on the need for detailed insights. 15. Integration with other Microsoft products involves connecting Power BI to Azure Data Lake Storage, SharePoint, or other services for seamless data exchange. Like❤️ the post I'll send more interview Questions.. 👉Be the first one to know the latest Job opening!! Join WhatsApp Channel 👇 Link 🔗 https://whatsapp.com/channel/0029VaI5CV93AzNUiZ5Tt226