There are basically two types of cookies: session cookies and
persistent cookies. Session cookies are temporary cookie files, which are erased when you close your browser. When you restart your browser and go back to the site that created the cookie, the website will not recognize you. You will have to log back in (if login is required) or select your preferences and themes again (if the site uses these features). A new session cookie will be generated, which will store your browsing information and will be active until you leave the site and close your browser.