Asp Net Interview Questions For 10 Years Experience
Commonly Asked ASP .NET Interview Questions for 10 Years of Experience
Asp Net Interview Questions For 10 Years Experience
11. Asp.net is a popular web application framework developed by Microsoft. If you have 10 years of experience in Asp.net, you should be able to answer questions related to various aspects of Asp.net such as its architecture, life cycle, controls, web services, security, data binding, caching, debugging, and deployment. You may also be asked about your experience in using different programming languages like C#, VB.net, or JavaScript, and your knowledge of web development technologies like HTML, CSS, and XML. Additionally, questions about your experience in using various Asp.net tools and frameworks such as MVC, Web Forms, and Entity Framework may also be asked. Your ability to troubleshoot and solve coding problems, as well as your understanding of industry best practices and your experience in working with databases, may also be evaluated during the interview. Overall, it is important to showcase your strong technical skills, experience, and problem-solving abilities to successfully crack the Asp.net interview for 10 years of experience.
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1 - What is the difference between ASP.NET and ASP?
ASP (Active Server Pages) is a server side scripting technology developed by Microsoft for creating dynamic web pages. ASP.NET is the next generation of ASP and is a web application framework for building modern dynamic websites and web services.
2) Explain the page life cycle of an ASP.NET page.
The page life cycle in ASP.NET includes five stages: Page request, page initialization, page load, postback handling, and page rendering. In the page request stage, the page is instantiated and objects such as the page itself and any controls on it are created. In the page initialization stage, any data is retrieved or initialized before the page loads. During the page load stage, the page is loaded with all of its content, including control properties, view state data, and user input. Postback handling is the stage where any user interaction, such as clicking a button, is handled. Finally, the page is rendered and sent to the client in the page rendering stage.
3) What is the difference between ViewBag and ViewData in ASP.NET MVC?
Both ViewBag and ViewData are used to pass data from a controller to a view in ASP.NET MVC. However, the main difference is that ViewData is a dictionary that requires a key to access data, while ViewBag uses the dynamic C# keyword, which allows values to be accessed directly without the need for a key.
4) Explain the difference between a user control and a custom control in ASP.NET.
A user control is a reusable UI component that is specific to a single application and can contain both HTML and server side code. It is saved as an .ascx file and can be used multiple times on a single page. A custom control, on the other hand, is a reusable component that can be used across multiple applications. It is compiled as a .dll file and can be added to the Toolbox to be used on any page or form.
5) What is the difference between an ASP.NET web forms application and an ASP.NET MVC application?
ASP.NET web forms is a programming model that allows developers to design web applications in an event driven approach, where the code behind file handles events such as button clicks. On the other hand, ASP.NET MVC is a framework that follows the Model View Controller architectural pattern, allowing for better separation of concerns and enhanced testability.
6) How do you handle errors and exceptions in ASP.NET?
In ASP.NET, error handling is accomplished through the use of Try/Catch blocks. Code that is susceptible to throwing an error is placed inside a Try block, and if an error occurs, it is caught and handled in the Catch block. Similarly, in ASP.NET MVC, developers can use global error handling settings in the web.config file to handle all unhandled exceptions.
7) What is the purpose of the Global.asax file in an ASP.NET application?
The Global.asax file is a global application file that contains event handlers for application level events, such as Application_Start, Application_End, and Session_Start. It is used to initialize application wide variables, create global objects, and handle application level events.
8) What is LINQ in ASP.NET?
LINQ (Language Integrated Query) is a feature in .NET that allows developers to use SQL like queries within their code to retrieve data from various sources, including databases, collections, and XML files. It is a powerful tool that helps in writing concise and efficient code for data manipulation.
9) How can you improve the performance of an ASP.NET application?
Some ways to improve the performance of an ASP.NET application include reducing the number of postbacks, using caching techniques, optimizing database queries, and minimizing the use of server side controls. Developers can also use third party tools for code analysis and performance testing to identify any potential bottlenecks.
10) What is ViewState in ASP.NET?
ViewState is a hidden field on an ASP.NET page that stores the state of controls on the page, including their values, styles, and properties. It is used to maintain the state of a web form across postbacks, allowing the page to remember user input and other changes made to the controls.
11) Explain the difference between server side and client side validation in ASP.NET.
Server side validation involves validating user input on the server before processing and saving it to the database. It is typically done in the code behind file. On the other hand, client side validation is done on the client side, usually through JavaScript, to validate user input before it is sent to the server. This helps in preventing unnecessary postbacks and improves the user experience.
12) How do you implement authentication and authorization in ASP.NET?
ASP.NET provides various authentication and authorization mechanisms, such as Forms authentication, Windows authentication, and Authorization rules. Forms authentication allows users to log in using a username and password stored in a database, while Windows authentication is based on a user's Windows credentials. Authorization rules, on the other hand, allow developers to specify access rights for specific resources based on user roles.
13) What is cross site scripting (XSS), and how do you prevent it in ASP.NET?
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Cross site scripting (XSS) is a security vulnerability that allows attackers to inject malicious scripts into web pages. In ASP.NET, this can be prevented using measures such as input validation, output encoding, and use of the AntiXSS library. It is also recommended to use HTTPS for all web applications to protect against XSS attacks.
14) What is the use of the ObjectDataSource control in ASP.NET?
The ObjectDataSource control allows developers to connect data bound controls, such as GridViews and ListViews, to a data source, such as a Business Object or a LINQ query. It eliminates the need to write code for CRUD operations and simplifies data access in web applications.
15) How can you implement caching in ASP.NET?
Caching is a process of storing frequently requested data in memory for faster retrieval in the future. In ASP.NET, developers can use various techniques to implement caching, such as Output Caching, Fragment Caching, and Data Caching. It helps in improving application performance and reducing server load.
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