Test your understanding of Power BI fundamentals with this interactive quiz based on common interview questions. Learn about Power BI features, data import methods, connection types, and visualization options to boost your business intelligence knowledge.
What is Power BI primarily used for in a business environment?
Explanation: Power BI is designed to help users connect to a variety of data sources, analyze data, and create interactive visualizations and dashboards. It is not intended for mobile app development, payroll management, or web design, which are unrelated to its core functionality.
Which feature of Power BI helps protect sensitive information in reports and dashboards?
Explanation: Data security and governance ensure that sensitive information remains protected using features like encryption and row-level security. Data masking is only a part of security; color themes and template importing focus on appearance and design rather than security.
If you have a spreadsheet with Power Query and Power Pivot models in Excel, which method should you use to bring it into Power BI Desktop?
Explanation: To import advanced Excel workbooks into Power BI Desktop, you use the File u003E Import option. The other options either relate to different data sources or features not focused on importing Excel models.
Which step should you take to connect Power BI to an online service like Google Analytics?
Explanation: To connect to services like Google Analytics, use Get data u003E Services in Power BI. The other options either describe Excel features, exporting actions, or non-existent menu paths.
How can you manually enter a small data table directly into Power BI Desktop?
Explanation: The Enter data button in the Home ribbon allows for direct manual input of tables in Power BI Desktop. Importing via SQL cannot be done manually, exporting is unrelated, and there is no Admin tab for data entry.
Which Power BI data connection type provides near real-time data analysis but relies on the data source's performance?
Explanation: DirectQuery queries the data source in real time, reflecting its current state but depending on its speed. Import loads data into Power BI and doesn’t update instantly, Live connection is for reusing models, and Offline mode is not a standard Power BI connection.
What is the first step after opening a dataset when you want to create a visualization in Power BI?
Explanation: Selecting fields initiates the visualization process in Power BI. Uploading or exporting occurs after visualization, while locking the dataset is not a step in making visuals.
How can you change the appearance of a visualization in Power BI?
Explanation: The Format tab allows customization of visual appearance. Merging fields changes data structure, reinstalling software is unrelated, and disabling data compression doesn't affect visualization appearance.
Which of the following is NOT a standard visualization offered by Power BI?
Explanation: Power BI provides bar charts, pie charts, and maps, but it does not have a built-in flowchart with interactive nodes as a standard visual. Flowcharts may require custom visuals or external tools.
What is the role of data compression in Power BI?
Explanation: Data compression in Power BI helps with managing large datasets efficiently by reducing their size, which improves load times. It does not increase loading time, limit visualizations, or block external connections.
Which is a disadvantage of using the Import data connection type in Power BI?
Explanation: Imported data needs manual or scheduled refreshes, so recent changes in the source may not appear immediately. The Import type supports many data types, allows visualization, and does not delete data by default.
What is a limitation of using a Live connection in Power BI?
Explanation: Live connections rely on existing datasets and limit model changes. They can allow custom visuals but don’t offer flexible transformations or use the most memory compared to Import.
Which Power BI feature enables row-level security in dashboards?
Explanation: Row-level security is managed within Power BI's data security settings. Auto-refresh controls update timing, the visualization pane relates to chart options, and chat support is not for security.
In Power BI, what is the difference between a dashboard and a report?
Explanation: Dashboards provide a one-page overview, while reports support multiple pages and visualizations. Reports aren't limited to one visual, can have more than text data, and can also be shared.
How can Power BI users add unique or specialized visualizations besides standard charts?
Explanation: Users can use the Power BI visuals SDK for custom visuals. Power Query edits data, not visuals. Disabling all visuals or specific mode upgrades do not allow additional chart types.
Which statement best describes Power BI's integration capabilities?
Explanation: Power BI is known for its versatile integration, including with spreadsheets and collaboration tools. It works with much more than PDFs or local files, and certainly supports broad integration.