Are you searching for interview questions and answers for Power BI? Then you've come to the correct place. According to industry estimates, Power BI advertising revenue is expected to exceed $5 billion by 2020, up from only $180 million in 2015. Thus, despite everything, you have an opportunity to improve your career in Power BI development.
Microsoft launched Power BI as a business intelligence solution in 2013. It combines many Excel add-ons to create a unique and self-contained business intelligence solution. The Power BI interview questions in this post are designed to prepare you for jobs connected with Power BI in large businesses that provide a competitive salary and benefits package. Prepare for the job interview by practicing these key Power BI interview questions:
Before we get into the interview questions, a few words about Power BI are in order. Power BI is a Microsoft product that enables you to view and share data throughout your company, as well as integrate it into your websites and apps. Power BI has been important in the growth of Microsoft. Users may create reports and dashboards with Power BI without the assistance of information technology professionals. It controls about 11.84 percent of the market. It is utilized by a number of large businesses, including Mortenson and Organogenesis Inc. Microsoft Power BI is primarily utilized in the retail, manufacturing, financial services, and transportation industries.
Here are the top 15 Power BI Interview Questions that may help you crack an interview!!
Question 1. How Would You Define Business Intelligence?
Ans. Business intelligence (BI) is the procedure of converting data into meaningful experiences that educate companies about critical and strategic business decisions. BI tools extract data and provide it to users in the form of reports, rundowns, dashboards, diagrams, graphs, and instructions.
Additionally, the phrase business intelligence often refers to a collection of devices that provide rapid, easy-to-process access to experiences about an organization's current state, based on available data.
Question 2. How Is Risk Mitigation Defined?
Ans. Risk mitigation is a process for preparing for and minimizing the effects of risks that a company considers. Risk mitigation, on the other hand, seeks to minimize the negative impact of risks and disasters on company development. Cyber-attacks, natural disasters, and other causes of physical or virtual damage are all potential threats to a company. Risk mitigation is one aspect of risk that the board and its implementation will contrast.
Question 3. What Is The Most Significant Problem In Business Intelligence?
Ans. Communication is the most difficult aspect. Communication throughout the execution process is critical to ensuring that the solution addresses the issues your company is attempting to solve. A lack of communication may result in a company investing resources in a solution that is unable to deliver on the promise made to important customers, leaving the solution mostly underused.
To avoid this, it is critical that communication between groups and with the supplier be constant. The group leader maintains constant communication with important partners to ensure that everyone is on the same page. While the buying and execution processes are underway, the group chief must also maintain open lines of contact with the supplier to ensure the person is addressing the business's concerns.
Question 4. What Is DAX?
Ans. There are some guidelines we must follow while using DAX. If you are familiar with Excel functions, you will quickly grasp these concepts.
DAX is used in two places:
- Calculated Column
- Calculated Measure
We should understand what both of these are predicated on:
- Calculated Columns are identical to the standard sections seen in a large number of databases. What important are that determined segments are the result of our computations, which included the use of at least two sections or segments from several tables. They are useful for doing row-wise computations.
- Calculated Measure, on the other hand, is analogous to a deciding section. They do not, however, involve any real memory, and their results cannot be identified as a segment. This is often used for doing dynamic computations on a collection of lines or information.
Question 5. What Is A Power Query?
Ans. Power Query is an Excel-based business tool that enables you to input data from a variety of sources and reshape it based on the circumstances. It enables you to create an inquiry once and then reuse it by doing a simple refresh. Additionally, it is potent.
It is a motor for data transformation and organization. Power Query has a graphical user interface for retrieving data from sources and a Power Query Editor for editing it. Because the motor is available in a variety of products and services, the location of the data is determined by where Power Query was used. Utilizing Power Query, you can simulate the extraction, transformation, and loading (ETL) of data.
Question 6. How Is Power BI used?
Ans. This business intelligence platform from Microsoft enables non-technical corporate clients to collect, analyze, visualize, and share data. Users of Microsoft Excel will feel right at home with its intuitive user interface and rich interaction with other Microsoft applications.
It is used to uncover knowledge contained inside an organization's data. It may help in connecting different informative collections, transforming and cleaning the data into an information display, and creating outlines or diagrams to provide visual representations of the data. This may all be transmitted to other users inside the company.
The information models may be used for associations in a variety of ways, including recounting stories via outlines and information perceptions and examining "consider the possibility that" scenarios included within the data. Additionally, its reports may answer queries incrementally and help with forecasting to ensure divisions achieve corporate objectives.
Additionally, it may provide leader dashboards to heads or administrators, providing management with a better knowledge of how offices are doing.
Question 7. How Would You Define Power BI Desktop?
Ans. It is a free application for generating reports and doing self-service data analysis that you install on Windows. It can connect to over 70 on-premises and cloud-based data sources in order to convert data into intelligent graphics. With Power BI Desktop, information researchers and engineers deliver reports and make them available to everyone.
Clients may use this to associate, modify, and model data. They may create visual representations of data in the form of diagrams, charts, and dashboards. They may use the help to share reports with others.
Question 8. What Is A Power Query?
Ans. To begin developing your Power Query script, you must first add a clear inquiry to Power BI Desktop. To add the query, click Get Data in the main window's Home strip, go to the other area, and double-tap Blank Query. This sends another query to Query Editor, which is stored on the Queries sheet.
Question 9. What Is A Power Pivot?
Ans. Power Pivot is an in-memory data visualization component that enables extremely dense data storage and lightning-fast gathering and processing. It is also accessible as an Excel add-on and may be used to create an information model for an Excel manual. Power Pivot may stack data on its own or into Power Query.
Question 10. What Is The Difference Between Power BI And Microsoft Excel?
Ans. Excel is used to organize data, modify it, and conduct mathematical calculations and computations.
It is a more comprehensive tool than Excel when it comes to examining relationships between tables, reports, and information records. Power BI is more intuitive and straightforward to use than Excel.
Question 11. Define The Term "Grouping"?
Ans. Grouping is a technique for combining or condensing at least two characteristics for further study. For instance, when we see things through a categorization report, we may notice a scarcity of records. In certain instances, it may be aggravating to watch all of those things fall short of expectations. In the current situation, you may create a single gathering by merging those data and displaying them as a single item.
Question 12. Distinguish Between M and DAX?
Ans. Microsoft Power BI offers two distinct programming languages: M and DAX (Data Analysis Expression), which may be used to channel, manage, and visualize data.
M is a query formula language that is often used in the Query Editor to prepare data before it is stacked into the Power BI model.
On the other hand, DAX is an analytical language that can be used to do comprehensive data analysis at the Data View stage.
M and DAX are not mutually exclusive; they have completely unique designs and rationales, as well as distinct fundamental codes. M and DAX cannot be used concurrently since M is used in the Query Editor while DAX is primarily used in the Data View model.
Question 13. What Are Custom Visuals?
Ans. We have the option to design our own graphic for use by the company as a whole.
Information is delivered by means of visuals, which are software packages that contain code. Anyone may create their own unique graphic and sell it as a stand-alone .pbiviz document that may be included in an official report later on.
See Import a visual record from your local PC into Power BI to learn how to import a Power BI visual from a document.
Question 14. What Does Power BI's Slicer Do?
Ans. On-material visual channels are what slicers are. Using the slicers, a user may quickly sort and filter through a large report to get just the information they need. When examining a report, users may choose characteristics while using slicers instead of filters since they are visible on the report. Using a business assessment report, for example, you may create a long-term slicing machine. You may choose the year you want to view sales data for from the slicer. The report's graphics will update to reflect the new data as it comes in.
Question 15. What Is A Power BI Designer?
Ans. To put it simply, PBID is a standalone program that doesn't need Excel and doesn't function as an add-in to Excel. PBID combines Power Query's queries, highlights, and usefulness with Power View's and Power Pivot's announcement capabilities. The PBID application's engine uses the even model, which is based on the data that has been sent along thus far. When this tip was sent, Power Maps had not yet been integrated into PBID; however, it should happen shortly. PBID can only be used on Windows since it is separate from Excel.
Conclusion:
BI jobs meet the need for knowledge and testing very well. Power BI, on the other hand, isn't limited to only these kinds of applications; it provides a broad range of administrations for data. It's not a required tool for managing large organizations and businesses, where data management is much more complex.
