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FTP(File transfer Protocol).
To transfer files.

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WWW (world wide web).
A system of linked documentes or files that we can access trough the internet and display in a browser.Do not confuse the WWW with the idea of the internet.

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E-mail
A system for exchangig messages between computers.

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Remote sessions (Telnet)
Remote acces to other comoputers.

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Web 2.0.
Web 2.0 tools,communities of users and services,like social networks,wikis,blogs,google maps and youtube.This create and encourage collaboration and the exchange of information between users to make up whatwe call the Social Web.

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New groups,forums,chats,videoconferencing.Plataforms for debate and exchangin experiences.