Top 20 Full Stack Dot Net Interview Questions and Answers

Introduction:
Preparing for a Full Stack Dot Net interview can be challenging, specially when it comes to the technical questions. We have developed an extensive list of the top 20 interview questions in order to help you clear your interview and show your skills in Full Stack Dot Net development. You have the skills and trust to succeed in any interview situation after reading the responses to these questions in this article. Also discuss the best Full Stack Dot Net Training Institute in Pune.

The top 20 Full Stack Dot Net interview questions are here, along with their answers:

1.  What is Full Stack Development?
The process of full stack development involves working on a web application's frontend (client-side) and backend (server-side). Dot Net developers with a full stack have the skills to successfully manage both elements.

2. Explain the DOT-NET framework.
The Microsoft-developed DOT-NET framework provides a platform for creating multiple types of apps. It consists of the DOT-NET Framework Class Library (FCL), which offers a large selection of pre-built classes and functions, and the Common Language Runtime (CLR), which manages memory and provides other runtime services.

3.  What are the different components of DOT-NET?
The Common Language Runtime (CLR), the DOT-NET Framework Class Library (FCL), ASP.NET for web development, ADO.NET for data access, Windows Forms for desktop applications, and Windows Presentation Foundation (WPF) for user interface (UI) development are a few of the main DOT-NET components.

4.  Describe C#. What are its features?
Its object-oriented programming language, C#, was created by Microsoft. In the DOT-NET system, it is usually used. Type safety, garbage collection, capacity, support for multiple types of programming, and a significant standard library are some of the key features of C#.

5.  Describe ASP.NET MVC.
A web development framework called ASP.NET MVC uses the Model-View-Controller (MVC) design pattern. The Model (data and business logic), the View (user interface), and the Controller (as well as replying to user requests and changing the model) are the three sections that make up an application.

6.  Describe the difference between ASP.NET Web Forms and ASP.NET MVC.
The previous web development platform, ASP.NET Web Forms, used an event-driven development style. On the other hand, ASP.NET MVC follows the MVC framework and provides better significance division, making it suitable for larger applications while improving testing.

7.  What is the Entity Framework?
The Object-Relational Mapping (ORM) framework provided by Microsoft is called Entity Framework (EF). By allowing developers to work with database entities as objects without performing direct SQL queries, it improves database access. Multiple databases are supported by EF, which includes additional skills like query performance and automatic schema structure.

8. What is the role of the Web API in Full Stack Dot Net development?
a web application programming interface (API) is a framework for creating HTTP services that can be used by different clients, like desktop programmers, mobile programmers, and web browsers. It makes it easy for Full Stack Dot Net developers to develop RESTful APIs and facilitate communication with an application's frontend and backend.

9.  What is the difference between abstract classes and interfaces in C#?
In C#, contracts are defined using interfaces and abstract classes as well. But like interfaces, which provide just method signatures, abstract classes can define method implementation and state. A class can only inherit from one abstract class, but it may inherit from multiple interfaces.

10.  Explain the concept of dependency injection in Full Stack Dot Net development.
The design process known as dependency injection is used to develop flexibly related application components. As opposed to expressing dependencies within a class, it allows them to be injected from the outside. This supports Full Stack Dot Net development's flexibility, testability, and modularity.

11.  What are the different types of authentication available in ASP.NET?
Authentication solutions provided by ASP.NET include Windows authentication, Forms authentication, and OAuth-based authentication using external sources like Google or Facebook. The Latest Authentication solutions like JWT (JSON Web Tokens) are also supported by ASP.NET Core.

12.  Explain the concept of LINQ (Language Integrated Query).
In C#, a set of language features known as LINQ was included, allowing users to query data from multiple places using a single syntax. It provides a simple and type-safe syntax for Full Stack Dot Net developers to query databases, XML documents, collections, and other data sources.

13.  What is the difference between value types and reference types in C#?
Similar to reference forms, which store a reference to the item's location in memory, forms of value store the value explicitly. Reference types are stored on the heap, while value types are stored on the stack of types. Int, float, and bool are instances of value types, while classes and interfaces are types of references.

14.  What is the purpose of the Global.asax file in ASP.NET?
In ASP.NET, app-level actions such as app start, session start, error handling, and authentication are handled by the Global.asax file. It allows Full Stack Dot Net developers to create their own code and logic that runs multiple times during the life cycle of the application.

15.  What are partial classes in C#?
Partial classes allow the definition of a class across different files. When different programmers or tools must work on different parts of a similar class, this is useful. To produce a single class, the partial classes are joined at compilation time.

16.  Explain the concept of asynchronous programming in C#.
The ability to write code that does not block the execution thread because of asynchronous programming allows Full Stack Dot Net developers to develop more responsive apps. To do difficult tasks without interrupting the main thread, it uses the async and want keywords.

17.  What is the role of caching in web applications?
By storing frequently used data in memory, caching increases the speed and scalability of online applications. By reducing the load on the database and speeding up responses, Full Stack Dot Net developers may use caching methods such as output caching, data caching, or query caching.

18.  How can you secure sensitive data in configuration files?
Full Stack To protect sensitive data saved in configuration files, Dot Net developers may use the built-in configuration providers and encryption methods provided by ASP.NET. Connection strings, API keys, and other private information can all be encrypted in this way.

19.  What is the role of unit testing in Full Stack Dot Net development?
The act of assessing individual lines of code in order to make sure they work as planned is known as unit testing. It assists Full Stack Dot Net developers in maintaining code quality, finding issues early in the development process, and improving the application's reliability and maintainability.

20.  How can you optimize the performance of a Full Stack Dot Net application?
Application speed can be improved by Full Stack Dot Net developers by employing methods such as caching, database optimization, asynchronous programming, minimizing network cycle falls, applying efficient algorithms, and optimizing the frontend code. Tools for tracking and analyzing performance may be helpful in finding issues with performance.

Conclusion:
By familiarizing yourself with these top 20 Full Stack Dot Net interview questions and their answers, you are well-prepared to face any technical challenge during your interview. Keep in mind that understanding the basic concepts is just as important as remembering the answers. Additionally, keep exploring and practicing Full Stack Dot Net development to enhance your skills further.

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Best of luck on your journey to becoming a successful Full Stack Dot Net developer and securing your dream job!