Asp Net Core Interview Questions And Answers
Asp Net Core Interview Questions And Answers
Asp Net Core Interview Questions And Answers
ASP.NET Core is a popular web development framework that allows developers to create modern, high-performance, and cross-platform web applications. As an interviewer, you may ask candidates a variety of questions to assess their knowledge and skills in using this framework. Some common ASP.NET Core interview questions may cover topics such as its features, advantages, and differences from other .NET frameworks. Candidates may also be asked to explain their experience with using ASP.NET Core, their understanding of key concepts like middleware and dependency injection, and their familiarity with front-end technologies like HTML, CSS, and JavaScript. Additional questions may touch upon security, scalability, and integration with other services or databases. Overall, these interview questions aim to evaluate a candidate's technical proficiency and problem-solving abilities in relation to using ASP.NET Core for web development.
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1 - What is ASP.NET Core?
ASP.NET Core is a cross platform, open source web development framework that enables developers to build modern, high performance, and cloud ready web applications. It is built on top of the .NET Core runtime and can run on Windows, Linux, and MacOS operating systems.
2) What are the advantages of using ASP.NET Core?
Some of the advantages of using ASP.NET Core are:
Cross platform compatibility allows for development on various operating systems.
It is an open source framework, meaning it is free to use and can be customized as per the project requirements.
It has a modular architectural design, making it easy to add or remove features.
High performance due to features like middleware, improved routing, and pre compiled views.
Built in support for cloud deployment options.
Provides built in dependency injection for managing object dependencies.
Improved security features, such as automatic anti forgery token generation to prevent cross site request forgery attacks.
3) What is the difference between .NET Core and .NET Framework?
.NET Core is a cross platform, open source framework, while .NET Framework is a Windows only framework. .NET Core is modular and lightweight, whereas .NET Framework is monolithic and heavyweight. .NET Core is primarily used for developing web applications, whereas .NET Framework can be used for desktop, web, and mobile application development.
4) How does ASP.NET Core achieve high performance?
ASP.NET Core uses various performance optimizations, such as middleware instead of HTTP handlers, better handling of requests with improved routing, and pre compiled Razor views. It also has features like built in dependency injection and the ability to scale with distributed caching and load balancing techniques.
5) What is middleware in ASP.NET Core?
Middleware is software that sits between an application and the webserver, and it can perform various tasks such as authentication, logging, error handling, and routing. ASP.NET Core uses middleware to handle requests and responses, allowing developers to add functionality without modifying the core application code.
6) What is Dependency Injection?
Dependency Injection is a design pattern used in software development to manage object dependencies. It allows the objects to be loosely coupled, making the code more maintainable, scalable, and testable. ASP.NET Core has built in support for dependency injection, which makes it easier to manage object dependencies in the application.
7) What is Model View Controller (MVC) in ASP.NET Core?
MVC is a software design pattern where an application is divided into three components: Model, View, and Controller. The Model represents the data, the View handles the user interface, and the Controller acts as an intermediary between the Model and View. ASP.NET Core uses MVC as its primary web development pattern.
8) What is Razor in ASP.NET Core?
Razor is a syntax used to create dynamic web pages in ASP.NET Core. It allows developers to embed server side code (C# or VB) into HTML. It is a powerful tool for creating dynamic user interfaces with minimal server code.
9) What is the IActionResult interface in ASP.NET Core?
IActionResult is an interface in ASP.NET Core that represents the result of an action method. It provides methods to create different types of responses such as ViewResult, JsonResult, RedirectResult, etc. It is useful for building modular and testable applications.
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10) What is the difference between TempData and ViewData?
TempData and ViewData are both options for passing data between controllers and views in ASP.NET Core. The main difference is that TempData persists the data for one request, whereas ViewData persists for the current request only.
11) What is ASP.NET Core Identity?
ASP.NET Core Identity is a membership system used for managing user authentication and authorization in ASP.NET Core applications. It provides built in support for user registration, account management, and password resetting.
12) How can you deploy an ASP.NET Core application?
ASP.NET Core applications can be deployed in various ways, including:
Deploying to a web server such as IIS by publishing the application.
Deploying to a cloud hosting platform like Azure or AWS.
Using containerization technology like Docker.
Deploying to a serverless platform like AWS Lambda or Azure Functions.
13) What is the difference between ASP.NET Core MVC and ASP.NET Core Web API?
ASP.NET Core MVC is used for developing web applications that follow the Model View Controller pattern, while ASP.NET Core Web API is used for creating RESTful web services that communicate with clients using JSON or XML. MVC is typically used for building server side rendered web applications, while Web API is used for building APIs that primarily handle data.
14) What is Tag Helpers in ASP.NET Core?
Tag Helpers in ASP.NET Core are used to manipulate and generate HTML elements. They allow developers to create HTML elements with server side C# code, making it easier to work with HTML in ASP.NET Core.
15) What is the difference between ASP.NET Core and Node.js?
Both ASP.NET Core and Node.js are used for building web applications, but they differ in terms of programming languages and frameworks. ASP.NET Core uses C# and a rich set of libraries and frameworks, while Node.js uses JavaScript and a lightweight set of modules. ASP.NET Core is cross platform and can run on various operating systems, while Node.js is primarily used for server side development and runs on the Node.js runtime.
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