Asp Dot Net Interview Questions
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Asp Dot Net Interview Questions
Asp Dot Net Interview Questions refer to the commonly asked questions during an interview for a job position that requires knowledge and skills in the Asp Dot Net framework. These questions typically cover the concepts and features of Asp Dot Net such as web development, server-side programming, data access, security, and deployment. The purpose of these questions is to assess the candidate's understanding and proficiency in Asp Dot Net and to determine if they are a suitable fit for the role. It is important for job seekers to prepare for these questions to demonstrate their expertise and increase their chances of getting hired.
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1 - What is ASP.NET?
ASP.NET is a web development framework created by Microsoft. It allows developers to build dynamic websites, web applications, and web services. It is an open source, server side, and object oriented programming language that is built on the .NET framework. ASP.NET allows developers to build powerful and scalable applications using a variety of programming languages like C#, VB.NET, and F#.
2) What are the advantages of using ASP.NET?
ASP.NET has numerous advantages, some of which include:
Cross platform compatibility: ASP.NET can run on any operating system, making it highly versatile.
Faster development: Its integrated development environment (IDE) and drag and drop features make it faster to develop web applications.
Scalability: ASP.NET is highly scalable, meaning it can handle an increasing amount of users and traffic without compromising performance.
Security: ASP.NET provides built in security features such as authentication, authorization, and data encryption to help developers create secure applications.
MVC architecture: Its Model View Controller architecture allows for separate layers of an application, making it easier to maintain and test the code.
3) What is the difference between ASP and ASP.NET?
ASP (Active Server Pages) was the first server side scripting language used for web development. Whereas ASP.NET is the successor of ASP, it is designed to be more modular, faster, and scalable. Additionally, ASP.NET can be developed in multiple programming languages, while ASP only supports VBScript and JScript.
4) What is the difference between WebForms and MVC in ASP.NET?
WebForms and MVC (Model View Controller) are two different approaches to building web applications in ASP.NET.
WebForms use a drag and drop model to create the user interface, while MVC follows a more structured architecture pattern to separate the presentation layer from the data and business logic.
WebForms have a stateful approach, while MVC is stateless.
WebForms are easier to learn and use, whereas MVC offers more flexibility and control over the application.
5) What is the role of Global.asax file in ASP.NET?
The Global.asax file serves as the entry point for an ASP.NET application. It contains application level events, such as Application_Start, Application_End, and Session_Start, which allow developers to write code that will run at specific points during the lifecycle of an application.
6) Explain the concept of caching in ASP.NET.
Caching in ASP.NET is the process of storing frequently used or expensive data in memory to improve the performance of an application. It reduces the number of trips made to the database and improves the response time of the application.
7) What is ViewState in ASP.NET?
ViewState is a hidden field on an ASP.NET web form that is used to store the state of server side controls. It allows a web page to persist data between postbacks, ensuring that user input is not lost when the page is refreshed or submitted.
8) What is a session in ASP.NET?
A session in ASP.NET is a mechanism for storing user specific information during a user's visit to a website. It allows developers to store and retrieve data associated with a particular user, making it easier to personalize the user experience.
9) What is the difference between Server.Transfer and Response.Redirect?
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Server.Transfer transfers the request to another ASP.NET page without changing the URL in the browser, whereas Response.Redirect redirects the user to a new page by changing the URL in the browser. Server.Transfer is faster as it does not require a round trip to the client.
10) What is an HttpHandler in ASP.NET?
An HttpHandler is an extension of the ASP.NET request processing pipeline. It helps in customizing the way an ASP.NET application responds to HTTP requests, allowing developers to intercept and process requests before it is sent to the web server.
11) What is a Web API in ASP.NET?
ASP.NET Web API is a framework for building HTTP services that can be consumed by various clients, including browsers and mobile devices. It uses a RESTful approach and supports the use of HTTP verbs such as GET, POST, PUT, and DELETE.
12) What are the different types of Authentication in ASP.NET?
There are three types of authentication methods in ASP.NET: Forms Authentication, Windows Authentication, and Passport Authentication. Forms Authentication is the most widely used method and allows for custom login pages and user management. Windows Authentication uses the user's Windows credentials for authentication, while Passport Authentication uses a centralized authentication service provided by Microsoft.
13) What is LINQ in ASP.NET?
LINQ (Language Integrated Query) is a powerful feature of ASP.NET that allows developers to query and manipulate data from various data sources using a common syntax. It supports both querying data from databases and in memory data sources.
14) What are the different types of caching in ASP.NET?
There are three types of caching in ASP.NET: Output Caching, Data Caching, and Fragment Caching. Output Caching stores the output of a page or user control in memory, while Data Caching stores data retrieved from a database or other data source. Fragment Caching stores a specific part of a web page in memory, allowing it to be reused on subsequent requests.
15) How does ASP.NET handle error logging and handling?
ASP.NET provides a built in mechanism for handling and logging errors called “health monitoring”. Developers can configure the level of logging and define custom error handling pages to display user friendly error messages. Additionally, ASP.NET provides a global error handling event in the Global.asax file to handle and log all unhandled exceptions.
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