Business intelligence is a necessary skill for every employee, and Power BI is the dominant tool in the market. If you are preparing for a job search, these Power BI interview questions can help you get started.
1. What is Power BI?
Power BI is a cloud-based business intelligence and data visualization software developed by Microsoft. It fetches raw data from various sources, transforms and analyzes it, extracts meaningful insights, builds interactive dashboards and reports, and shares the results with relevant data consumers to make data-driven decisions.
2. What are the advantages of Power BI?
Some advantages of Power BI include its ease of use, powerful ETL toolkit, ability to share insights, fast data updates, template dashboards, real-time updates, support for various devices, quick and safe data connections, natural language processing, hybrid configuration, and smart deployment.
3. What are some disadvantages of Power BI?
Disadvantages of Power BI include limited dashboard sharing, lack of real-time connections for most data sources, data size limitations for free users, inability to store adjusted filters, and the need for constant improvement. However, Power BI is continuously evolving to overcome these limitations.
4. What is a common workflow in Power BI?
A standard Power BI workflow involves fetching data to Power BI Desktop, cleaning and manipulating it, creating a report, publishing it to Power BI Service, building dashboards, sharing them with colleagues, and interacting with the final dashboards and reports in Power BI Mobile apps.
5. What are the main business applications of Power BI?
Power BI can be used to extract insights from raw data, create live reports and interactive dashboards, track progress and KPIs, detect project performance, distribute roles, grant access to team members, and display business statistics favorably.
6. What kind of specialists typically use Power BI?
Roles that commonly use Power BI include project managers, business analysts, data analysts, data scientists, IT specialists, data administrators, developers, and report consumers.
7. What is a dashboard in Power BI?
A dashboard in Power BI is a single-page selection of insightful visualizations from a report. End users can access dashboards from various devices, interact with them to extract insights, and understand the big picture of the business or project.
8. What is Power BI Desktop?
Power BI Desktop is a free Microsoft application that connects to data sources, fetches and transforms data, builds data models, and creates reports and dashboards with visuals. It allows users to publish reports to the cloud through Power BI Service.
9. What is Power Query?
Power Query is a business intelligence ETL tool available in Power BI Desktop. It allows users to load and combine data from different sources, clean and reshape data using an intuitive interface, and analyze data using the M language.
10. What is Power Pivot?
Power Pivot is a component of Microsoft Excel used to import data from multiple sources, build tabular data models using DAX language, define relationships between tables, write formulas, create PivotTables and PivotCharts, and analyze data.
These questions cover the basics of Power BI and can help you prepare for your job search or interview.
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