Power Bi Basic Interview Questions
Essential Power BI Interview Questions
Power Bi Basic Interview Questions
During a Power BI interview, you may be asked questions related to your understanding of data visualization, data modeling, DAX functions, Power Query, and report creation. You may also be asked to demonstrate your problem-solving skills by working on sample datasets and creating insightful visualizations. It's important to showcase your knowledge of Power BI features like dashboards, slicers, filters, and data connections, as well as your ability to transform raw data into meaningful insights for decision-making purposes. Be prepared to discuss your experience with different data sources, handling errors, and optimizing report performance. Practicing sample questions and scenarios can help you feel more confident and well-prepared for your Power BI interview.
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1 - What is Power BI?
Power BI is a business analytics tool by Microsoft that allows users to visualize and share insights from big data sources to foster collaborative decision making within organizations.
2) What are the key components of Power BI?
The key components of Power BI include Power Query (for data connectivity and transformation), Power Pivot (for data modeling), Power View (for interactive data visualizations), and Power Map (for geographical data visualization).
3) How does Power BI differ from Excel?
While both Excel and Power BI are used for data analysis, Power BI offers more advanced visualization tools, seamless data connectivity with various sources, real time data updates, and sharing capabilities that Excel may lack.
4) How can you connect data from different sources in Power BI?
Users can connect data from different sources in Power BI by using built in connectors for popular databases, cloud services, files, and online platforms, allowing them to import, clean, and model data for analysis and visualization.
5) What is Power Query used for in Power BI?
Power Query is used in Power BI to extract data from various sources, transform it using a user friendly interface, and load it into the Power BI data model. This tool helps in cleaning and shaping data without the need for complex coding.
6) Can you schedule data refresh in Power BI?
Yes, users can schedule automatic data refresh in Power BI to ensure that the reports and dashboards always reflect the most up to date data without manual intervention.
7) How can you share Power BI reports with others?
Power BI users can share their reports and dashboards with others by publishing them to the Power BI service, creating a secure workspace for collaboration, and distributing the content via email or embedding it into websites or apps.
8) What is DAX in Power BI?
DAX (Data Analysis Expressions) is a formula language used in Power BI for creating custom calculations, aggregations, and measures based on the data model. It allows users to perform complex calculations and analysis within Power BI reports.
9) Can Power BI handle real time data?
Yes, Power BI supports real time data streaming through various connectors and APIs, allowing users to visualize and analyze streaming data for immediate insights and decision making.
10) How does Power BI ensure data security?
Power BI implements robust data security measures such as encryption, access controls, data loss prevention, and compliance certifications to safeguard sensitive information and ensure regulatory compliance when sharing and collaborating on reports.
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