There are two type of cookies we use in ASP.Net...
1- Persistent Cookie:- A cookie which store your information in your hard disk, and it will stored till time either you will not delete that or cookie time period does not expire. it is browser independent cookie.
2- Non - Persistent Cookie(Temprary cookie):- A cookie which will be alive till that time untill your browser is alive, As you will logout to your browser or close your browser, cookie will get expire and user information would also be lost. So it is a browser dependent cookie,