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Technobile Systems Interview Questions and Answers

Updated 15 Dec 2024
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Q1. What are the components of Power bi

Ans.

Power BI components include Power Query, Power Pivot, Power View, Power Map, and Power Q&A.

  • Power Query: Used for data extraction and transformation.

  • Power Pivot: Used for data modeling and analysis.

  • Power View: Used for interactive data visualization.

  • Power Map: Used for geographical data visualization.

  • Power Q&A: Allows users to ask questions in natural language and get answers from data.

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Q2. What is mean by M language

Ans.

M language is a powerful data transformation language used in Power Query in Power BI.

  • M language is used to transform and clean data in Power BI.

  • It is a functional language with a wide range of functions and operators.

  • M language is case-sensitive and uses a step-by-step approach to data transformation.

  • Examples of M language functions include Table.TransformColumns and List.Transform.

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Q3. Diff between summarize and summaruzetable

Ans.

summarize is used to aggregate data at a specified level, while summarizetable is used to aggregate data across multiple tables.

  • summarize is used with a single table, while summarizetable can be used with multiple tables

  • summarize can only be used with columns from the specified table, while summarizetable can be used with columns from multiple tables

  • summarize can be used to create new columns, while summarizetable is used to aggregate data

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Q4. What is mean by DAX

Ans.

DAX stands for Data Analysis Expressions and is a formula language used in Power BI for creating custom calculations.

  • DAX is used to create custom calculations in Power BI, similar to Excel formulas.

  • It can be used to create calculated columns, measures, and calculated tables.

  • DAX functions can be used to manipulate data, perform calculations, and create complex expressions.

  • Examples of DAX functions include SUM, AVERAGE, CALCULATE, and RELATED.

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Q5. What is power query

Ans.

Power Query is a data connection technology that enables you to discover, connect, combine, and refine data across a wide variety of sources.

  • Power Query is a data transformation tool in Power BI used to import, transform, and clean data before loading it into the data model.

  • It allows users to connect to various data sources such as Excel, databases, web services, and more.

  • Users can perform data cleansing, transformation, and shaping operations using a user-friendly interface....read more

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Q6. Explain PCF, AI Builder

Ans.

PCF stands for PowerApps Component Framework, AI Builder is a tool in Power Platform for building AI models.

  • PCF is a framework for building custom controls in PowerApps and Dynamics 365

  • AI Builder is a tool that allows users to build AI models without needing coding skills

  • AI Builder can be used for tasks like object detection, form processing, and prediction

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Q7. Explain AI Builder,

Ans.

AI Builder is a Power Platform service that allows users to easily add AI capabilities to their applications.

  • AI Builder provides pre-built models for common AI scenarios such as object detection, text recognition, and prediction.

  • Users can also train custom models using their own data to meet specific business needs.

  • AI Builder integrates seamlessly with Power Apps and Power Automate to enable automation and decision-making based on AI insights.

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