Web 2.0:
Web 2.0 refers to the idea of “New Internet” or the second wave of world wide web such as social network.social network allow people come together online around shared interests , hobbies etc.
Examples of web2.0 is flickr where the users can share their photos.Bloging is also included in web2.0 family.
Cookies:
We can also set date and time for the cookies.Expired cookies are deleted by the browser when the user visits the site that wrote the cookies.If you do not set the cookies expiration but it is not stored in the user’s hard disk.here cookies are maintained as user’s session information.its like non persistent cookies used to store the information that needs for short time or for secrity purpose.
