Cookies are also known by many names, such as HTTP Cookies, Browser Cookies, Web Cookies, Session Cookies and so on.
Basically cookies are a small text file sent by the web server and saved by the Web Browser on the client's machine.
Server-Side Validation is a secure form of validation.
The main advantage of Server-Side Validation is if the user somehow bypasses the Client-Side Validation, we can still catch the problem on server-side. NET: Answer: View State is the method to preserve the Value of the Page and Controls between round trips. View State is turned on by default and normally serializes the data in every control on the page regardless of whether it is actually used during a post-back. That means that a new instance of a page is created every time when we make a request to the server to get the page and after the round trip our page has been lost immediately Answer: Caching is one of the most interesting concept and operation in ASP. If you can handle it, you can run any web application by applying the caching concept depending on the requirements.
Whenever the user gives the input, it must always be validated before sending it across to various layers of an application.For further information click on the link: The ASP.