Power BI Interview Questions and Answers
Power BI is an immensely powerful data visualization and business intelligence solution, designed to assist businesses in understanding, visualizing, and sharing insights gleaned from their data through interactive dashboards and reports.
Featuring an easy drag-and-drop interface and host of features for creating customized visualizations to aid data-driven decisions making, whether by business analysts, data scientists or managers alike.
1. What is Power BI?
Power BI is a business intelligence (BI) tool developed by Microsoft that allows users to analyse and visualize data from various sources.
2. What are the four stages of business intelligence?
The four stages of business intelligence are collection, data cleansing, reporting and visualization, and decision making and production.
3. What are the different types of business intelligence tools?
There are various BI tools available in the market, such as Qlik, Sisense Power BI, Tableau, and Zoho analytics. However, the most popular tools are Power BI, Qlik, and Tableau.
4. What are the essential terms for Power BI users and analysts?
Building blocks are essential terms for Power BI users and BI analysts. These terms include visualizations, reports, data sets, tiles, and dashboards.
5. How to load data from Excel in Power BI?
To load data from Excel in Power BI, users can go to Power BI, Stop, select the data source, and select the Excel file they want to load. Once the data is loaded, users can preview it and rename the table if necessary.
6. What is the Power Query Editor?
Power BI users may load data from numerous sources, conduct data transformations, and build new tables or columns using the Power Query Editor. The Power Query Editor may also delete irrelevant columns from analyses.
7. How to load data from SQL Server in Power BI?
Users may load data from SQL Server into Power BI by going to Power BI, Stop, selecting the data source, and then selecting the SQL Server to connect to.
Once the data has been imported, users may evaluate it and create visualizations with the Power BI desktop application.
8. How to extract data from a Power Data File (PDF) in Power BI?
Users may go to Power BI, Stop, pick the data source, and select the PDF file to extract data from. The Power BI desktop utility lets users evaluate and visualize extracted data.
9. How are Power BI and Excel distinct?
Excel is less powerful than Power BI for data visualization and business intelligence. Excel is generally used for data analysis and spreadsheets, whereas Power BI lets users import and modify massive volumes of data from numerous sources, perform data transformations, and produce interactive reports with charts, graphs, and other visualizations.
Compared to Excel, Power BI offers more sophisticated data analysis and reporting.
10. What is Power BI Service?
Power BI Service is a cloud-based service that allows business users to view reports and dashboards. To log in, users need a browser and credentials, such as a Microsoft or work account.
11. What are the steps for consolidating data from multiple Excel files using Power BI?
Click connect after selecting the folder.
2. Give the folder path.
3. Click OK, and the application finds eight files in the folder.
4. Select bind and transform.
5. Choose an Excel sheet for all files.
6. Repeat for combined sheets.
7. Click OK to put data into Power BI desktop.
12. What are Power BI data transformation advantages?
Power BI automatically decides or detects the first two apply stages. Adds or removes columns and records steps.
Users can add or delete columns from the pick columns stage if they are on the same step as when they removed them. This method organizes data for efficient manipulation and analysis.
13. What is data preparation in Power BI?
Power BI prepares data using pre-defined settings like Excel formulas. The next module’s DAX scripting language allows additional customization and modification.
14. How to extract data from multiple sources in Power BI?
Extracting data from numerous sources requires knowing which data comes from which source. The query dependence option on the view tab displays a tree map or tree view of all tables and their dependencies. A table with Excel data uses data from the person’s table.
15. What is Power BI Desktop?
Power BI Desktop is a standalone application that connects users with various data sources and allows users to create reports. It is free and requires installation on laptops and machines.
16. How to handle data in Salesforce in Power BI?
Salesforce data can be handled in Power BI by preparing the data in a specific format, such as country, city, and population. The text also discusses the use of transpose data in Excel, which allows for easy data transposition.
17. How many decimal places should data be played in Excel?
Data should be played after two decimal places, but it should be consistent. Users can round off the numbers to remove the decimal platform and get rounded up values. This helps compile data effectively.
18. How to fetch data from Salesforce in Power BI?
Power BI can retrieve Salesforce data by generating a table and formatting it by nation, city, and population. Excel’s transpose data makes data transposition easier.
19. How does Power BI help in data analysis and visualization?
Power BI makes it easier to analyze and visualize enormous volumes of data with its strong data analysis and visualization tools. These characteristics assist data modeling, visualization, and manipulation. Users may build interactive dashboards, reports, and visualizations using Power BI to acquire data insights and make educated choices.
20. What is Power BI a mobile app?
Power BI a mobile app is available for Android, iOS, and Windows users, allowing them to securely access reports and data from anywhere.
Power BI Training
IT experts oversee managed enterprise BI. Complex data flows, expensive infrastructure, and specialized skills are typical.
Self-service business intelligence lets people examine and visualize data without IT assistance. Self-service BI is cheaper, easier, and more accessible than managed business BI.
22. What is Power Pivot?
An in-memory analytics engine that handles large amounts of data and presents it quickly and intelligently
23. What are some advanced features of Power BI Designer?
Dragon rock capabilities, allowing users to drag and drop data in various ways.
24. What are the two types of gateways available for refreshing Power BI reports after they are published to the cloud?
DMG gateway (data management gateway) and Power Gap personally gateway (power gap personally gateway.
25. What are Gateways?
Bridges used to gap differences between on-premise data and Azure cloud services.
26. What is Power BI Gateway?
Power BI Gateway is a component that is installed on your workstation and runs in the background to update data. You may schedule data refresh, allowing for automatic data update in quiet mode.
27. What are the two types of Gateways in Power BI?
Personal gateways and on-premise gateways.
28. What is the maximum number of features in Power BI?
1200 different functions, M functions, and DAX functions.
29. How many visuals and charts can Power BI create?
Approximately 280 visuals and charts.
30. How can Power BI be installed?
By clicking on the “install” button, selecting the launch button or choosing the “download or language options” option, or upgrading to the newer version.
31. What is the use of a date card in Power BI?
A date card in Power BI is used to display the minimum date in a table and to show the highest selling date and the highest profit date.
32. How can a date card be improved in Power BI?
A date card can be improved in Power BI by using relative date filtering to find the earliest date in the last two years, applying filters on the visual, and adjusting the card size and colour.
33. What is the function of an Excel filter?
A filter in Excel is used to apply filtering on specific pages and visuals, allowing users to access relevant data and make informed decisions.
34. What is Power BI Report Server?
Power BI Report Server is an alternate tool for Power BI Service, which is managed by Microsoft. It is an on-premises portal that allows businesses to access reports or dashboards without putting any data on the cloud.
35. How can a filter be improved in Power BI?
A filter can be improved in Power BI by using drill through to navigate through different pages and applying filters on all pages, including subcategories, sales, and more.
36. How do I change the fill option for shapes in Power BI?
To change the fill option for shapes in Power BI, go to the Insert tab and click on the Shapes button. From there, you can select the desired fill option.
37. How do I customize the appearance of shapes in Power BI?
To customize the appearance of shapes in Power BI, go to the Format tab and adjust the size, colour, and other properties of the shape.
38. What is the Power BI desktop tool?
The Power BI desktop tool lets users create, edit, and share reports and dashboards. The Power BI desktop utility lets users load data, alter it, and visualize it.
39. What is a drill-through action in Power BI?
A drill-through action in Power BI allows users to jump to different pages and view specific data based on their selections.
40. What is the objective of Power BI?
Power BI helps companies analyse and understand their data. It makes it easy to create and share interactive dashboards and reports to spot data trends, patterns, and anomalies.
Power BI is utilized in banking, healthcare, retail, and manufacturing.
41. What is Power Query in SQL and how can it be used to write a small piece of code?
Power Query is a data integration tool that allows users to transform, clean, and format data in a Power Query.
It can be used to write small pieces of code, such as assigning values to variables and creating new queries.
42. What is the definition of Business Intelligence?
Business Intelligence is a set of techniques and tools that transform raw data into meaningful information for making important business decisions.
It involves delivering the right data to the right people at the right time, enabling them to make more effective decisions.
43. What are the three waves of Business Intelligence?
The three waves of Business Intelligence are I-T to end user or the technical wave, self-service wave, and the shift to the end user or the power to the end user wave.
Power BI Online Training
Data Visualization is a pictorial or graphical representation of information or data. It provides insights into complex datasets by communicating key aspects in a more intuitive and meaningful way.
Data visualization allows the intersection of design, communication, and information service.
45. What is Power BI Workspace?
Power BI Workspace is an online environment where Power BI reports and dashboards are created, shared, and collaborated upon.
46. What is the “Profit Leaders” option in Power BI?
The “Profit Leaders” option in Power BI is a feature that allows you to create a combination of different states and their profits, displaying the profit across different states in different countries.
47. What is the “Divergence” option in Power BI?
The “Divergence” option in Power BI is a feature that allows you to show the variation in colour intensity based on the profit value.
48. What is the aim of building a dashboard in Power BI?
The purpose of creating a dashboard in Power BI is to provide a comprehensive way to visualize and analyse data, allowing users to gain a better understanding of their business performance.
49. What filters are available in Power BI desktop?
Power BI desktop offers various types of filters, including subcategories, product pages, and filter filters. The main type of filter is the drill-through filter, which is essential for understanding specific categories and products.
50. What is Dax(Data Analysis Expressions)?
Dax is a functional language used in Power BI desktop, similar to Power Query. The underlying language written in Power Query is called M code, which is a combination of steps.
51. What is self-service?
Self-service is a concept in Power BI that allows users to create their own reports and visualizations without the need for assistance from data analysts or IT professionals.
52. What is Power Query?
Power Query is an ETL tool that allows for shaping, cleansing, and transforming data. It also includes the M query feature, which involves building multiple queries and writing M code.
“Revolutionize your data analysis with Mcqs on Power BI.”
1. What is Power BI?
a. visualization software
b. processing software
c. storage software
d. analysis software
2. What is Power BI used for?
a. Data analysis and visualization
b. Data storage and management
c. Data manipulation and cleaning
d. Data entry and input
3. Is Power BI only for data visualization or does it have other features as well?
a. Only data visualization
b. Data visualization and data processing
c. Data visualization, data processing, and data storage
d. Data visualization, data processing, data storage, and data analysis
4. What kind of data can be visualized using Power BI?
a. Numeric data only
b. Categorical data only
c. Both numeric and categorical data
d. Only unstructured data
5. Is Power BI a standalone software or does it require other tools to work with?
a. Standalone software
b. Requires other tools for data processing
c. Requires other tools for data storage
d. Requires other tools for data analysis
6. Which of the following is not a feature of Power BI?
a. Data visualization
b. Data analysis
c. Data modelling
d. Machine learning
7. What is the goal of Power BI?
a. Provide a platform for data visualization and analysis.
b. Automate data processing and reporting
c. Store and manage massive volumes of data
d. Conduct complex statistical analyses
8. What is Power BI Desktop?
a. Cloud-based service that allows users to create and share interactive dashboards
b. Desktop application that enables users to build and publish reports
c. Mobile app that provides access to Power BI data
d. Web-based tool for managing and analysing large datasets
9. What is the primary goal of Power BI?
a. Help users create and manage data models
b. Provide users with a single source of truth for their data
c. Enable users to create interactive dashboards
d. Automate data analysis tasks
10. What is Power BI Service?
a. Web-based tool for creating and sharing interactive dashboards
b. Desktop application that enables users to build and publish reports
c. Cloud-based service that allows users to create and share interactive dashboards
d. Mobile app that provides access to Power BI data
conclusion
Power BI interview questions for experienced professionals looking to work with Power BI should have a strong understanding of data modelling, SQL, and programming concepts, as well as experience with data analysis and visualization.
By answering the interview questions and understanding the concepts discussed, candidates can demonstrate their expertise and knowledge of Power BI and position themselves for success in this field.
Power BI Course Price
Deepthi
Author