Power BI Interview Questions

Susmitha Ranjith
08 Feb 2022
TECHNOLOGY

 

powerbi training

Power BI is the latest most happening Business Intelligence tool by Microsoft. This cloud based BI service, though initially launched for public download in 2010, was recognized by Gartner.com (a software reviewing company) in 2019 as the leader in this domain. The simplicity of its interactive visualizations and business intelligence capabilities makes it possible for almost anyone to analyze and create reports. This Business Analytics tool has made it possible to do data warehousing, preparation, discovery and interactive dashboards without knowing coding. 

There is quite a demand for professionals with this skill set. This is one technology or skill set which can get you an easy entry into the big corporate world today. Go through our Power BI Course to see the complete modules covered for a Certification in Power BI. Below is a table that shows the salary you can expect by learning the Skill – MS Power BI as per payscale.

 

Power BI Training Online:

Easy Courses offers you the best Power BI Training online. Our training on Power BI is conducted by working professionals who are MNC employees. They share and teach you how to use Micreosoft POwer BI and what are the latest practices. This makes our course the best training on Power BI. You will learn to use the software in a practical way, how to create reports and analysis, and complete projects using Micrososft Power BI. This is a very trending software today as it enable you to get into an IT job without learning coding. Learn more about our Power BI training online here.

Power BI Interview questions:

Let’s have a look at some questions you need to be prepared for during interview:

  1. What is Power BI?

    Power BI is a Cloud based Business Intelligence service by Microsoft. It is a business analytical tool which can extract data from over 120+ sources, and transform valuable information into interactive and custom visualizations.
  2. What are the versions of Power BI?

    Power BI Desktop
    Power BI Pro
    Power BI Premium
    Power BI Mobile
    Power BI Embedded
    Power BI Report Server
  3. What is Self Service Power BI?

    The limitations of Managed Enterprise BI led to development of Self-Service Power BI. SSBI is an approach wherein users, without much technical skillsets or experience of data mining and business intelligence, can access and explore data and build interactive reports and dashboards very easily. MS Power BI is an easy to use and complete self-service data analytics tool.
  4. Power BI process with its components?

    The following are the processes involved in the workings:
    a. Data Collection: Using Power Pivot (data modelling tool) data is fetched, cleaned and loaded onto Power Query.
    b. Data Processing: Using the Power Query (Data mashup and transformation tool) the raw data is transformed into valuable insights and stored in data warehouses.
    c. Data Visualization: This processed data is presented in various reports and dashboards using Power Q&A, Power View, Power Map.
  5. What are the types of Visualizations in Power BI?

    a. Area charts
    b. Bar and Column charts
    c. Cards
    d. Combo charts
    e. Decomposition Tree
    f. Doughnut charts
    g. Funnel charts
    h. Gauge charts
    i. Key Influencers charts
    j. KPIs
    k. Line charts
    l. Maps
    m. ArcGIS map
    n. Azure map
    o. Filled map
    p. Shape map
    q. Matrix
    r. Pie charts
    s. Power Apps visual
    t. Q& A Visual
    u. R script visual
    v. Ribbon chart
    w. Scatter
    x. Slicers
    y. Smart Narrative
    z. Standalone Images
    aa. Tables
    bb. Treemaps
    cc. Waterfall charts
  6. What are the options of refreshing data on Power BI?

    Refreshing data in Power BI means updating the data from the original data source onto a dataset. Power BI limits datasets on shared capacity to 8 daily dataset refreshes and must complete in 2 hrs. This can either be based on a refresh schedule or on demand.
    a. Package Refresh
    b. Model/data refresh
    c. Tile refresh
    d. Visual container refresh

     
  7. What are the different views on Power BI Desktop?

    a. Data View
    b. Report View
    c. Relationship View

     
  8. What is the difference between Power BI Dataset, a Report, workbooks, dataflow, and a Dashboard?

    These are major building blocks that are integrated into workspaces, and are created in capacities. Capacities are a set of resources like storage, processor, and memory that are used to host and deliver your Power BI content. Capacities are either shared or dedicated.
    a. Dataflow: A dataflow is used to unify data from disparate sources, they are optional and are used in complex projects. Dataflows are created only in workspaces and are stored as entities in Common Data Model (CDM).
    b. Dataset: This is a collection of data that you import or connect to. Datasets can be part of workspaces or single workspace. One dataset can be shared over reports, dashboards and workspaces.
    c. Report: One or more pages of visualization (visual) like charts, graphs, and treemap are called MS Power BI Reports. Every report has two interactive view: Reading view and Editing View. In a workspace the associated report is listed under Content tab.
    d. Dashboards: This is a single canvas that can contain zero or more tiles, and widgets. A dashboard is associated with a workspace and helps to share visualizations from different datasets, reports, and tools.
    e. Workbooks: This is quite similar to dataset. There are 2 options for the data in the Excel sheet to be incorporated to Power BI: a) Import the data, then dataset is created, b) Upload the Excel file, then workbook is created.
  9. What is Power Query?

    Power Query is a data transformation and preparation engine. It has a graphical interface for getting data from sources and an Editor interface for applying the transformations. Power Query is an extract (E), transform (T), and load (L) data tool that helps to shape, clean, and transform data without the knowledge of coding.
  10. What is DAX? Why is it used in Power BI?

    DAX (Data Analysis Expressions) is a formula language and is used to do basic calculation and data analysis on data in Power Pivot. This language is used to simplify the data analysis, it also allows users to customize certain variables and generate new ones too.

Current trend of Power BI: 

Power BI is a cloud-based Business Intelligence and Analytics tools that is being used by all top companies irrespective of the Industry. Have a look of their list Power BI Companies with their case studies and testimonies @ Microsoft.

 

Power BI Jobs:

There is high demand for professionals possessing knowledge of the tool. A career in Power BI is a promising one with High returns. According to Glassdoor, a Power BI developer can earn a salary of Rs.5L/yr.
Easy Courses offers a practice-oriented training on Power BI under the tutorship of MNC professionals. Learn the trending technology and get a quick and easy entry into the Corporate world. Don’t hesitate now its time to take the plunge.

 

Our Course on Power BI is the latest syllabus covering all aspects of Business Intelligence. The course takes you through all aspects of MS Power BI in a practical way ensuring your comprehensive knowledge to start your career the right way.