Part6 Q1 Q10 Power BI Essential Interview Questions and Answers powerbi powerbiinterview

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Q1 : c) The on-premise data gateway is not configured or running • Power BI needs an on-premise data gateway to connect to data sources that are hosted on-premise (like SQL Server). If the gateway is not set up correctly, the refresh will fail. • Q2 : b) Reduce the number of columns and rows before loading the data into Power BI. • Reducing the dataset size by limiting unnecessary rows and columns will directly improve performance. While DirectQuery might help in some cases, it can also slow down performance if the underlying data source is not optimized. • Q3 :b) Use Row-Level Security (RLS) to restrict data visibility for different departments • Row-Level Security (RLS) allows you to restrict data at the row level for specific users or groups. This ensures that the finance team sees only financial data, while others see data relevant to them without creating separate reports. • Q4:b) Apply a Visual-Level filter for the specific visual • Visual-Level filters allow you to filter data for individual visuals without affecting other visuals on the report or page. • Q5:a) Create a many-to-one relationship from the Product table to the Sales table • In this scenario, each product can have many sales transactions, but each sales transaction relates to only one product. Therefore, the relationship should be many-to-one from the Product table to the Sales table. • Q6:c) SUM • The SUM function adds up all the values in a column. SUMX is used for row-by-row calculations, while CALCULATE modifies a filter context. • Q7:c) Use the “Remove Duplicates” option in Power Query • In Power Query, the 'Remove Duplicates' option is specifically designed to eliminate duplicate rows from your dataset. • Q8:b) SAMEPERIODLASTYEAR • The SAMEPERIODLASTYEAR function allows you to compare values across the same period from the previous year, making it ideal for year-over-year growth calculations. • Q9b) Use a multi-field dropdown in a single slicer • A multi-field dropdown slicer allows users to select from multiple fields dynamically, simplifying the interface and avoiding the clutter of multiple slicers. • Q10:d) Incremental Refresh • Incremental refresh enables reports to refresh data only for the new or updated part of the dataset, making updates faster and more efficient. • =================== • More about this power bi playlist : • Power BI Essential Interview Questions and Answers • Unlock the secrets to acing your Power BI interview with this quick-fire shorts video! 🚀 We cover 100 key questions and answers ranging from basic concepts to complex strategies, ensuring you're prepared for any challenge. Whether you’re a beginner or looking to sharpen your skills, this video has something for everyone! Don’t forget to like, share, and subscribe for more tech insights! • #PowerBI #InterviewQuestions #TechShorts #DataAnalytics #DAX #BusinessIntelligence #DataVisualization #PowerBIInterview #LearnPowerBI #TechCareer #DataScience #DataAnalysis #PowerBIEssentials #PowerBIForBeginners #Analytics #DataDriven

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