Definition of Cookie

 
 A cookie is simply an ASCII file that the server passes to the client and the client stores on the local system. The contents of the cookie are under the control of the Web server and may contain information about you or your past and present surfing habits. This information is stored for the convenience of the Web site or for the convenience of the user. When a new request is made at the Web server, the server can ask the browser to check if it has any cookies and, if it does, to pass those cookies back to the server. 
 
 
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