Top [35]+ Common Power bi Interview Questions & Answers

Top [35]+ Common Power bi Interview Questions & Answers | in this Post we give Best Power bi Interview Questions & Answers for Experienced. 

Power bi Interview Questions  and answers| in this Post we talk about TOP 35+ common Power bi interview questions and answer for experienced.

Power bi Interview Questions with Answers

1. What is a Power BI?

Power BI could be a cloud-based data-sharing platform. Technically Power Bi is a side of Share Point online, you'll be able to load Excel workbooks into the cloud and share them with a selected group of associates.

Not only that, but your colleagues can interact along with your reports to use filters and slicers to spotlight data. they're completed by Power BI, an easy way of sharing your analysis and insights from the Microsoft cloud.

2. Power BI features allow you to:

Share presentations and queries along with your colleagues. Update your Excel file from data sources that may be on-site or within the cloud.

Display the output on multiple devices. This includes PCs, tablets, and HTML 5-enabled mobile devices that use the ability BI app.

3). what's Power BI Desktop?

Ans: Power BI Desktop could be a free desktop application that may be installed right on your own computer.

Power BI Desktop works cohesively with the ability BI service by providing advanced data exploration, shaping, modeling, and creating reports with highly interactive visualizations. you'll be able to save your work to a file or publish your data and reports right to your Power BI site to share with others.

4). What is the format available in Power BI?

Power BI Desktop—for desktop computers power BI service—an online SaaS (software as a service)Mobile Power BI apps—for iOS and Android devices

All of those are utilized in conjunction. as an example, you may create a report on your desktop, and so publish and share it online so colleagues on mobile devices can read it. 

5). Describe the building blocks of Power BI.

Visualizations

Visualization could be a chart, graph, or similar visual representation of knowledge.

Datasets

A dataset is that the group of knowledge accustomed creates a visualization, like a column of sales figures. Datasets are combined and filtered from different sources using built-in connectors.

Reports

A report could be a group of visualizations on one or more pages; as an example, charts, graphs, and maps are combined to make a report. 

Dashboards

A dashboard allows you to share a one-page visualization with others, who can then interact along with your dashboard.

Tiles

A tile could be a visualization on your dashboard or in your report. because the creator, you'll be able to move tiles around.

6). What are the most components of the ability BI toolkit, and what do they do?

Power Query: lets you discover, access, and consolidate info from different sources power Pivot: a modeling tool.

Power View: a presentation tool for creating charts, tables, and more.

Power Map: lets you create geospatial representations of your data Power.

7). what's a content pack, and why would you utilize one?

A content pack could be a ready-made, predefined collection of visualizations and reports using your chosen service (for example, Salesforce). You’d use one once you want to urge up and running quickly, rather than creating a report from scratch.

8). Describe DAX.

DAX stands for Data Analysis Expressions. It’s a group of functions, operators, and constants utilized in formulas to calculate and return values. In other words, it helps you create new info from the info you have already got. 

9). What are the three fundamental concepts of DAX?

Syntax:

This is how the formula is written—that is, the weather that comprises it. The Syntax includes functions like SUM (used once you want to feature figures). If the syntax isn’t correct, you’ll get a mistake message.

Functions

These are formulas that use specific values (also called arguments) in a very certain order to perform a calculation, like the functions in Excel. The categories of functions are date/time, time intelligence, information, logical, mathematical, statistical, text, parent/child, and others.

Context

There are two types: row context and filter context. Whenever a formula encompasses a function that applies filters to spot one row in a very table, row context comes into play. When one or more filters are applied in a very calculation that determines a result or value, the filter context comes into play.

10). Why and the way would you utilize a custom visual file?

You’d use a custom visual file if the prepackaged files don’t fit the requirements of your business. Custom visual files are created by developers, and you'll be able to import them and use them within the same way as you'd the pre-packaged files.

11). what's grouping? How are you able to use it?

Power BI Desktop allows you to group the info into small chunks. For grouping, you must use Ctrl + click to pick out multiple elements within the visual. Right-click one among those elements which appear in groups window.

12). Explain the term responsive slicers.

On a report page, you'll be able to easily resize a responsive slicer to numerous sizes and shapes, and therefore the data contained in it should be rearranged in keeping with it. just in case if the visual becomes too small to be useful, an icon representing the visual ability to require its place, thus saving the space on the report page.

13). Define the term 'M language."

It is a programing language utilized in Power Query. it is a functional, case-sensitive language that is comparable to other programming languages and simple to use.

14). What information is required to make a map in Power Map?

Power Map can display visualizations that are geographical in nature. That's why some quite a location data is required, as an example, city, state, country or latitude and longitude.

15). What are the features of Power BI dashboard?

It allows you to drill through the page, bookmarks, and selection pane. It allows you to form various tiles like website, images, textbox, and integrate URLs. Allows you to line report layout to mobile view.

16). What are the steps to travel to Data Stories Gallery in Power Bi communities?

Steps to travel to Data Stories Gallery:

First, open PowerBI.com in an exceedingly favorite browser. By hovering on LearnClick on CommunityScroll down little, and you may find Data Stories Gallery. Anyone can submit her or his Data Story yet.

17). Where incremental licensing refresh feature is accessible?

Incremental refresh feature mainly used for high-end scalability of knowledge by publishing only thereon workspace in Power BI Service where Premium capacity is required.

18). How are you able to analyze Power BI reports data in excel?

You need to follow the below-given steps:

Open Power BI Admin portal, visit tenant settings, and choose -> Analyze. Check that Power BI Administrator has enabled Excel option or not.

Then at the upper right corner, click settings to download and install Excel updates. Next, visit the left-hand side navigation pane, visit the workspace, click on the dataset, click on Eclipses (three dots) and choose to Analyze in Excel.

Download the ODC file, save, and double click on that. After that must provide a power BI user id and password.

19). what's Power Pivot, and what are the filter writes in Power BI?

It helps you to create a knowledge model, creating formulas, relationships, calculated columns from various resources.

Filters are applicable in:

Visualization level page LevelReport Level

20). How are you able to perform Dynamic filtering in Power BI?

Dynamic Filtering in Power BI is finished using the subsequent steps:

Once all the info is founded, publish a detailed report back to Power BI. Publish it to the group workspace. Create a filter link to create a DAX calculated column. Public overview report.

21). what's Power Pivot Data Model?

It is a model that contains data writes, tables, sections, and table relations. These data tables facilitate you to develop for holding data for a business substance.

22). Which programing language is employed in Power Query?

M-code could be a new programing language that's employed in power query. it's almost like other programming languages and simple to use.

23). benefits of using Variables in DAX function.

Here, are benefits of using DAX function:

By declaring and evaluating a variable, the variable is reused multiple times in an exceedingly DAX expression, which helps you to avoid additional queries of the source database.

Variables can make DAX expressions more useful and logical. Variables are simply scoped, which should be measure or query which cannot be among measures.

24) What are Tiles in Power BI?

Tile may be a crucial feature of power BI services and can be said as a picture of the data which could be pinned to the dashboard.

25). Name two kinds of connectivity modes in Power BI?

Two kinds of connectivity modes employed in Power BI are:

ImportDirect Query

26). what's the calculated column?

It is a calculating expression of DAX which allows calculation on data stored in an exceedingly new column.

27). what's query collapsing?

The process of converting the steps in power query editor to SQL and executing it by the source database is named query collapsing.

28). Explain the data source filter.

It is a parameter to filter the information into machines.

29). what's content packs?

These are pre-built solutions build for popular services as a serious part of the ability BI experience.

30). What are the categories of filters available in Power BI Reports?

Important filters of Power BI reports are:

Visual-level FiltersPage-level FiltersReport-level Filters

31). what's Bookmark?

Bookmark in Power BI helps you to capture the configured view of a report page in an exceedingly specific time. This includes filter and state of visual which might use a brief move come to the report that you just can add as a bookmark.

32). What are the benefits of employing a variable in Power BI?

Variables facilitate you to form more logical Queries and which should be used for multiple DAX functions.

33). Why use selection pane in Power BI?

Selection Pane helps you to require control over visuals that require to be displayed and which shouldn't be displayed. It allows you to mix multiple visual pages within the group and is additionally employed in bookmarking.

Power BI Interview Questions – Power Pivot

34). what's Power Pivot?

Ans: Power Pivot is an add-in for Microsoft Excel 2010 that allows you to import several rows of information from multiple data sources into one Excel workbook. you'll be able to then further analyze the information so you'll be able to make timely business decisions without requiring IT assistance.

35). what's xVelocity in-memory analytics engine employed in Power Pivot?

Ans: The main engine behind the power pivot is that the xVelocity in-memory analytics engine. It can handle a great amount of information because it stores data in columnar databases and in-memory analytics which ends up in faster processing of information because it loads all data to RAM memory.

36). Can we've got quite one active relationship between two tables in the data model of power pivot?

Ans: No, we cannot have quite one active relationship between two tables. However, it can have quite one relationship between two tables but there'll be only 1 active relationship and lots of inactive relationships.

37). what's Power Map?

Ans: Power Map is an Excel add-in that has you with a robust set of tools to assist you visualize and gain insight into large sets of knowledge that have a geo-coded component.

It can facilitate your produce 3D visualizations by plotting up to 1,000,000 data points within the sort of column, heat, and bubble maps on top of a Bing map. If the information is time-stamped, it may produce interactive views that display, how the information changes over space and time.

38). What is the first requirement for a table to be employed in Power Map?

Ans: For information to be consumed in power map there should be location data like:

Latitude/Longitude pairStreet, City, Country/Region, Zip Code/Postal Code, and State/Province, which might be geolocated by Bing

The Content row s are I'm unique for the table this is the primary requirement, It must also contain location data, which might be within the sort of a Latitude/Longitude pair, although this is often not a requirement. you'll use address fields instead, like Street, City, Country/Region, Zip Code/Postal Code, and State/Province, which might be geolocated by Bing.