1) In general, a server is a computer program that
provides services to other computer programs in the same or other computers.
2) The computer that a server program runs in is also frequently referred
to as a server (though it may contain a number of server and client programs).
3) In the client/server programming model, a server is a program that
awaits and fulfills requests from client programs in the same or other
computers. A given application in a computer may function as a client
with requests for services from other programs and also as a server of
requests from other programs.
Specific to the Web, a Web server is the computer program (housed in
a computer) that serves requested HTML pages or files. A Web client is
the requesting program associated with the user. The Web browser in your
computer is a client that requests HTML files from Web servers.
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