ASP.NET Interview Questions!!! You can ace any ASP.NET interview if you think like an interviewer and rehearse your replies and questions.

To help you feel at ease and prepared for your interview, I suggest reading the whole blog and all of the information connected to it.

You should complete it feeling more confident and adept in interviews, with less fear and more eagerness to demonstrate your abilities!

ASP.NET Interview Questions and Answers:

1. What is ASP.NET Core?

ASP.NET Core is Microsoft’s solution for developing software. It is a cross-platform runtime environment that allows applications to be created on multiple platforms.

2. What is ASP?

ASP stands for Active Server Pages, which is Microsoft’s open source version of their web development kit.

3. What is the purpose of ASP.NET Core?

The purpose of ASP.NET Core is to provide a unified platform for building almost anything in software land, including desktop applications, web applications, cloud hosting, mobile apps, gaming, internet of things, and artificial intelligence.

4. What is C-sharp used for in ASP.NET Core?

C-sharp is one of the languages used in ASP.NET Core, consisting of a runtime engine and libraries for executing programs in a compliant language. While C-sharp is the most popular language, it can also be written in other languages.

5. What is the Model View Controller Design Pattern?

The Model View Controller Design Pattern is a software design pattern used in web development. It separates the application into three components: the model, view, and controller.

6. What is database setup in building a website with a database application?

Database setup is the process of creating a database structure and defining the tables and relationships within the database.

7. What is registration in building a website with a database application?

Registration is the process of creating a user account for a website or application. It typically involves providing personal information and a password.

8. What is login in building a website with a database application?

Login is the process of verifying a user’s identity and granting access to the website or application. It typically involves providing a username and password.

9. What is page security in building a website with a database application?

Page security is the process of protecting a website or application from unauthorized access or malicious attacks. It typically involves implementing authentication and authorization mechanisms.

10. What is database querying in building a website with a database application?

Database querying is the process of retrieving data from a database. It typically involves using a query language like SQL to define the criteria for retrieving data.

11. What is the ASP.NET. platform?

ASP.NET Core is a platform for building web applications, consisting of a runtime environment and libraries for executing programs in a compliant language. It is similar to Java in many ways, as it is compiled on one platform and can run on many platforms.

12. What is a full stack environment?

A full stack environment is an end-to-end solution for building web applications. It includes a database management system, business logic in the middle, and front-end services like HTML.

It can be combined with popular front-end services like React, Angular, or View, or mobile applications.

13. What are some popular front-end services for ASP.NET Core?

Some popular front-end services for ASP.NET Core include React, Angular, and View. These services can be used to create responsive and interactive user interfaces for web applications.

14. Can ASP.NET Core be used for building mobile applications?

Yes, ASP.NET Core can be used for building mobile applications. It can be combined with popular front-end services like React Native or Xamarin to create cross-platform mobile applications.

15. What is the ASP.NET. core?

The ASP.NET. core is Microsoft’s solution to develop software. It is a cross-platform runtime environment that allows applications to be created on multiple platforms.

16. What is the Model Views and Controllers (MVC) line in ASP.NET Core?

The Model Views and Controllers (MVC) line is a software design pattern used in web development. It separates the application into three components: the model, view, and controller.

17. What is the purpose of building an application in ASP.NET Core?

The purpose of building an application in ASP.NET Core is to provide a flexible programming environment. Users can choose between front end and back end services, using them all together or separately.

18. What are the features of the app built with ASP.NET Core?

The app built with ASP.NET Core offers a variety of features, including custom nav bars, tables, classes, search functions, security integration, and more.

19. What is Java?

Java is a programming language and computing platform first released by Sun Microsystems in 1995 and later acquired by Oracle Corporation. It runs on billions of devices, including notebook computers, mobile devices, gaming consoles, medical devices, and more.

It is widely used object-oriented programming language, with rules and syntax based on C and C++ languages.

20. What is ASP.NET?

ASP.NET is a free cross-platform open source developer framework that supports Windows, Linux, and Mac OS.

With.NET, developers can use multiple languages, editors, and libraries to build web, mobile desktop, games, and IoT applications.

21. What is the difference between Java and ASP.NET?

Java supports Windows, Solaris, Linux, and Mac OS. IDEA-like Eclipse, BlueJ, IntelliJ, IDA, JGrasp, JCreator, NetBeans, Greenfoot, and JDevilar are used by ASP.NET.

The most popular IDEA-like environment is Visual Studio. Java employs a just-in-time compiler and concurrency, but ASP.NET uses natively built languages like C # and C++, which are quicker and less memory-intensive.

22. What is the performance of Java?

Java’s performance is attributed to its just-in-time compiler and concurrency capabilities. The compile code is immediately called by the Java virtual machine, resulting in faster and less memory-consuming programs.

23. What is the performance of ASP.NET?

ASP.NET uses natively compiled languages like C sharp and C++, which are faster and less memory-consuming than Java.

24. What is licensing for Java and.NET?

Licensing for both Java and.NET is a key factor to consider when choosing a career path. Both Java and.NET have their own licensing policies and licensing terms, making it essential to carefully consider the specific needs and requirements of each platform before making a decision.

25. What are the suitable areas of development for Java and.NET?

Java is suitable for web projects, big data, and G U I applications. It is used as server-side language for backend development, embedded systems, rede applications, and web applications.

On the other hand, .NET is used to build for web mobile desktop games and IoT, web applications, client applications, and enterprise development.

26. What are the three components of ASP.NET architecture?

Language, library, and CLR determine ASP.NET architecture. Web application development uses language to connect with machines. Web application development uses various computer languages, including VBA and C-sharp.

The library is a pre-written class or programmed template for app development. Most ASP.NET online applications utilize the web library. Program execution and trash collection are done by the common language runtime.

27. What are the tools and frameworks used for ASP.NET?

C-sharp, JavaScript, Html, object-oriented programming, and web development expertise are needed to grasp ASP.NET. Microsoft Web Platform installer, SQL Complete, Web Essentials for Visual Studio, and reshaper are ASP.NET frameworks. Reshapper speeds up code quality inspection and mistake detection, helping developers create apps faster.

28. What is the target audience for a course on ASP.NET?

The target audience for a course on ASP.NET is intermediate-level students about building a website with a database application, looking to improve their skills and gain experience in building web applications.

29. What are some of the features of the app built with ASP.NET?

The app built with ASP.NET offers a variety of features, including custom nav bars, tables, classes, search functions, security integration, and more.

30. What are the benefits of using ASP.NET?

The benefits of using ASP.NET include the maximization of productivity, the production of interactive data-driven web applications on the internet, and the ability to develop applications for multiple platforms using a single code base.

31. What are Java and .NET used for?

Java and .NET are popular technologies for developing web applications. Java is suitable for web projects, big data, and GUI applications, while .NET is a free open source platform with no licensing costs.

32. What are the three components of ASP.NET architecture?

The architecture of ASP.NET consists of three components: language, library, and common language runtime.

33. What are the three major languages used by ASP.NET?

The three major languages used by ASP.NET are C-sharp, V-B.NET, and F-sharp.

34. What is the common language runtime?

The common language runtime is a platform used to execute programs, mainly helping to execute .NET programs and performing key activities like garbage collection and exception handling.

35. What are the five characteristics of ASP.NET architecture?

The five characteristics of ASP.NET architecture are code behind model, directives, caching, user controls, and state management.

36. What is the Life cycle in ASP.NET?

The Life cycle, also known as the Application-to-Web-Service (Asp.Net) Life cycle, is a set of two stages that help in producing dynamic outputs in ASP.NET.

37. What are the two stages of the Life cycle?

The two stages of the Life cycle are the application Life cycle and the Play-It-Life cycle.

38. What are the stages of the application Life cycle?

The application Life cycle involves several stages, including application start, object creation, STTP application, dispose, and application end.

39. What is the purpose of the application start stage in the application Life cycle?

The purpose of the application start stage in the application Life cycle is for the server to check the request and provide access to the application.

40. What is the purpose of the object creation stage in the application Life cycle?

The purpose of the object creation stage in the application Life cycle is for the application to hold all the information about the request, cookies, and browsing information.

41. What is the purpose of the page life cycle?

The page life cycle is a set of phases that ASP.NET pages go through before the response is sent to the user. The page life cycle includes initialization, restoring, and execution.

42. What is the purpose of the page initialization phase in the page life cycle?

The purpose of the page initialization phase in the page life cycle is for all controls to be initialized and each controller to be provided with a specific ID.

The application is also provided with control properties, and information is set using view state and control state.

43. What is the purpose of the rendering phase in the page life cycle?

The purpose of the rendering phase in the page life cycle is to send all response information back to the user and store all the information being sent.

44. What is the purpose of the unload phase in the page life cycle?

The purpose of the unload phase in the page life cycle is to clean all the unwanted information of an application and clean the memory once the output is sent back to the user.

45. What is the architecture of ASP.NET?

The architecture of ASP.NET is similar to any layer architecture that defines layers as the core component of the platform.

The main business logic and UI (User interface) logic in ASP.NET code are encapsulated in the web app layer, while the database access layer, CAD services, and web API services are encapsulated in the infrastructure layer.

46. What are the main layers in ASP.NET?

The main layers in ASP.NET are the web app layer, the infrastructure layer, and the application core.

47. What are the types of projects in ASP.NET?

The types of projects in ASP.NET include application core projects, infrastructure projects, and web application projects.

48. What are the types of interfaces in ASP.NET?

The types of interfaces in ASP.NET include application core interfaces, infrastructure interfaces, and data access interfaces.

49. What are the types of types in ASP.NET?

The types of types in ASP.NET include application core types, infrastructure types, and data access implementation types.

50. What are the data sources in ASP.NET?

The data sources in ASP.NET include SQL databases and third-party services such as GitHub API, SendGrid API, and others.

51. What is the role of the application core project in ASP.NET?

The application core project stores the business model which contains entities, services, and interfaces. These interfaces contain abstractions for operations done by infrastructure.

52. What is the role of the infrastructure project in ASP.NET?

The infrastructure project includes data access implementations, such as entity framework, E of core migration objects, and data access implementation classes.

The infrastructure project also contains implementation of services that must interact with the infrastructure concerns.

53. What is the role of the data access layer in ASP.NET?

The data access layer in ASP.NET is responsible for accessing the database and other data sources.

54. What are the benefits of using ASP.NET Core over ASP.NET Framework?

The benefits of using ASP.NET Core over ASP.NET Framework include improved performance, modularity, built-in dependency injection, cloud-readiness, and support for various platforms.

55. How do I install and set up ASP.NET Core for development?

Visual Studio 2019, Community Edition, and the.NET Core SDK are needed to install and build ASP.NET Core. In Visual Studio 2019, choose “Cross-platform” under Dual Set. From there, open a folder, a project or solution, and clone it to create a new project.

56. What are the different project templates available in Visual Studio 2019 for ASP.NET Core development?

The different project templates available in Visual Studio 2019 for ASP.NET Core development include ASP.NET Core, laser web assembly, ASP.NET Core empty, and ASP.NET Core web app model.

57. What is the MVC pattern?

The MVC pattern is a software design pattern that divides an application into three major component groups: model, view, and controller. This principle emphasizes the separation of concerns, ensuring that software is classified based on the type of task it performs.

58. How does the MVC pattern work?

Using the MVC pattern, user requests are routed to a controller who interacts with the model to conduct user actions and receive query results. The controller selects the view to be displayed to the user and supplies it with any model data it requires.

59. What is ASP.NET Core MVC?

ASP.NET Core MVC is a lightweight, open-source presentation framework designed specifically for use with ASP.NET Core. It allows developers to create modern web apps using the MVC model view controller architectural pattern.

60. What are the functions of the model in ASP.NET Core MVC?

The model in ASP.NET Core MVC includes functions such as representing the application state and any other business logic or activities that should be executed by a business logic.

61. What are the functions of the view in ASP.NET Core MVC?

The view in ASP.NET Core MVC is responsible for displaying content through the user interface. Views should have minimal logic and any logic should be related to presenting content.

62. What are the functions of the controller in ASP.NET Core MVC?

The controller in ASP.NET Core MVC is a component that manages user input, interacts with the model, and chooses which view to render. It processes and responds to user input and interaction, and is the initial entry point in the MVC architecture.

63. What are the components included in the ASP.NET Core MVC framework?

The framework includes components such as routing, model binding, model validation, dependency injection, filters, and areas.

64. How is routing built in ASP.NET Core MVC?

Routing is built on top of ASP.NET Core routing, a robust UR L mapping component that enables the creation of applications with logical and searchable URLs. Routes can be defined with simple route templates in tags that take into account route value limitations, defaults, and optional values.

64. What is dependency injection in ASP.NET Core?

Dependency injection is a component of ASP.NET Core that allows controllers to request required services through their constructors, achieving inversion of control between classes and dependencies.

65. What are filters in ASP.NET Core MVC?

ASP.NET Core MVC filters execute code before or after particular request processing pipeline stages to authorize, limit resource access, and capture responses. Custom action method pre- and post-processing logic may be executed using filters.

66. What are areas in ASP.NET Core MVC?

Areas in ASP.NET Core MVC allow for the division of a large ASP.NET Core MVC web app into smaller functional groups. Logical components such as model, controller, and view are kept in separate folders in an MVC project, and naming conventions build relationships between these components.

67. How to create an ASP.NET Core MVC application using Visual Studio 2019?

Installing and setting up Visual Studio 2019 to construct an ASP.NET Core MVC application requires software.

Required .NET Core SDK, SQL server, and editor-like visual studio. Choose the ASP.NET Core Web App, Model View Controller template and click create.

68. How to modify the template, add controllers, and web APIs in ASP.NET Core MVC?

After creating the project, you can modify the template, add controllers, and web APIs by going back to Visual Studio and making the necessary changes.

69. How to change the title of the project and reset the settings in ASP.NET Core MVC?

To change the title of the project and reset the settings in ASP.NET Core MVC, go to Visual Studio and change the title from demo to simply learn.

Change the home or privacy to “simply learn” and reset the settings. Restart the project and restart to see the demo changed to simply learn.

70. What is the ASP.NET web API?

The ASP.NET web API is a framework for creating Http-based services that can be used on various platforms such as web, games, Windows, and mobile.

It serves as an excellent foundation for developing RESTful apps, including Microsoft Graph, Azure DevOps, Cognitive Services, and PlayLab.

71. What is Http client in ASP.NET web API?

Http client in ASP.NET web API is a new feature that allows developers to make HTTP requests from their server-side code, including ASP.NET and MVC server-side applications.

72. How to create a web API project in ASP.NET?

To create a web API project in ASP.NET, first create a new project in Visual Studio and select the ASP.NET Core Web API template.

73. What data types does ASP.NET web API support?

ASP.NET web API supports different data types such as JSON, XML, and many other natively supported formats.

74. How to interface with web API servers using ASP.NET web API framework?

ASP.NET web API framework contains a new Http client that can be used to interface with web API servers.

75. What is a controller in ASP.NET web API?

A controller in ASP.NET web API is a class that handles HTTP requests and returns responses to them. It is responsible for mapping HTTP methods to specific actions and processing data.

76. What is a view in ASP.NET web API?

A view in ASP.NET web API is a class that represents a user interface or a part of it. It is responsible for rendering the response based on the data received from the controller.

77. What are the two ASP.NET web application framework templates?

The two ASP.NET web application framework templates are C# and MVC. The C# template is used for creating ASP.NET web applications, while MVC allows for fast test-driven development using the latest standard.

78. What is Web API?

Web API is an excellent foundation for making daytime services available to a wide range of devices, as people use iPhones, mobile phones, and tablets regularly.

79. What are the key features of Web API?

Some of the key features of Web API include its support for different data types, such as XML and JSON formats, and its ability to interface with the Web API server.

The framework also contains a new Http client that can be used in server side applications, window forms applications, console applications, and other applications.

80. What is the ASP.NET web API framework?

The ASP.NET web API framework creates Http services that browsers, mobile phones, and tablets may access. An extension of WCF REST API, it works with ASP.NET M V C and other web applications like web forms.

Let’s be more sparkle by reading MCQ’S of ASP.NET

1) Which of the following is Microsoft’s solution for developing software on multiple platforms?

a) Java

b) Python

c) .NET

d) Ruby

2) What does A S P stand for in a Microsoft solution for developing software?

a) Application Server Pages

b) Active Server Pages

c) Advanced Server Page

d) Application Programming Pages

3) Which of the following languages is used in Microsoft’s .NET platform?

a) C++

b) Java

c) C#

d) Python

4) Which of the following is an intermediate-level course for students about building a website with a database application?

a) Beginner Web Development with C#

b) Advanced Database Programming with C#

c) Intermediate-Level Web Development with C#

d) Beginner Mobile Application Development with C#

5) Which of the following is a cross-platform open source developer framework developed by Microsoft?

a) Java

b) .NET

c) Python

d) Ruby

6) Which of the following is a comprehensive introduction to ASP Net Core?

a) A guide to building a mobile application with Java

b) A comprehensive introduction to ASP Net Core, focusing on the development of a simple application using CSS and JavaScript.

c) A guide to building a web application with Python

d) A guide to building a desktop application with Ruby

7) Which of the following is the operating system that Java runs on?

a) Windows

b) Linux

c) Mac OS

d) Solaris

8) Which of the following is an IDEA-like environment used with .NET?

a) JGrasp

b) Greenfoot

c) NetBeans

d) Visual Studio

9) Which of the following is a feature of the Java programming language?

a) Support for multiple languages, editors, and libraries

b) Just-in-time compiler and concurrency capabilities

c) Integration with SQL Server

d) Native compilation capabilities

10) Which of the following is a key factor to consider when choosing a career path in software development?

a) Platform compatibility

b) Programming language support

c) Licensing policies

d) Development speed

In conclusion, ASP.NET is a robust and adaptable platform for developing online applications. It offers developers a diverse set of tools and capabilities for creating dynamic and responsive web apps that can be readily connected with other Microsoft technologies.

Whether you’re developing a small website or a huge business application, ASP.NET provides something for every developer.

With its open-source nature and ever-changing capabilities, ASP.NET is an excellent option for developers wishing to create high-performance, scalable online apps.

I hope you will be shine in your next interview.

All the Best!!!