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Servlets and CGI

 
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1.What is the difference between servlets and CGI?
2.How the sever identifies the users in an internet?Is it only by the session tracking?
 
Pragya Prakash
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Servlets are an effective replacement for CGI. Servlets provide a way to generate dynamic documents that are easier to write and faster to run.
CGI makes a new process for every request, making it slower & more memory-expensive. Servlets solve these problems.
As regards ur 2nd question, most web applications have an authentication mechanism, which relies on either cookies or database.
If u need further information on how this comes about, let me know.
 
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