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What is a cookie?

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What is a cookie? What are the advantages and disadvantages of using cookies in a web application?

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An HTTP cookie, or a Web cookie, is a parcel of text sent by a server to a web browser and then sent back unchanged by the browser each time it accesses that server. It could report to the webmaster a lot of things about who you are, where did you come from and what IP address did you login from, etc. HTTP cookies are used for authenticating, tracking, and maintaining specific information about users, such as site preferences and the contents of their electronic shopping carts.

Only the server that wrote the cookie can read it. This way, you don't have to type your password every time. If you go to another site, it cannot see you are a member of another site such as ebay or my.yahoo, nor can read ...

Solution Summary

7 paragraph discussion of internet browser cookies.