A server is basically a program that runs on a machine and provides
a specific service to all machines that are connected to it. The
server has a specific set of programs that allows the connected
computers (called clients) to make different kinds of requests to it.
❍A Web server is a machine that hosts Web sites and allows
Internet users (clients) to access these sites. A Web server is basically
the kind of server that holds static companies and just waits around
for requests to come around from other machines on the Internet.
Once it receives a request, it allows access to the data requested.
Web servers are the principal part of the Web, and every URL you
request usually ends up at a Web server—unless a proxy server decided
that it can help speed up the process by sending you the data itself.
❍ A file server is a machine that keeps files and allows clients to
upload and download them from it.
❍ A proxy server sits between a client application, such as a Web
browser, and a real server. It intercepts all requests to the real
server, sees if it can fulfil the request from any of the recent
requests, and if it can’t, forwards the request to the server that
actually hosts the Web site.
❍ A groupware server is software designed to enable users to collaborate,
regardless of location, via the Internet or a corporate
intranet and to work together in a virtual atmosphere.
❍ Mail servers move and store mail all across the Internet, and you
have been “served” by one when you’ve checked your mail.
❍ A chat server allows you to interact with other users on the network
in real-time.
❍ Integral to the process of sending data across the Internet is the
Domain Name Server (“the DNS”).
0 comments:
Post a Comment