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建立人际资源圈Internet_Security
2013-11-13 来源: 类别: 更多范文
Internet Security
The Internet, or 'net, is a vast network of computers that connects
many of the world's businesses, institutions, and individuals. The
Internet is composed of many parts, including the World Wide Web, FTP,
IRC, Newsgroups, Gopher, WAIS, Archie, and of course Electronic Mail
(Email).
The Internet is mainly used for communication. Email is the most
heavily used resource of the Internet- over 40 million email messages
are sent through the Internet a day. The second most used resource,
called the World Wide Web, or WWW, consists of pages of words, images,
sounds, and video.
The Internet is continuing to grow at 40% a year, with about 20 million
users, mainly in USA, Canada, and Australia, but still many all over the
world. You can do many things on the Internet, such as shop for just
about anything, bank and manage money, watch and listen to live cable
televison and radio broadcasts, talk to other users with voice like a
telephone, conduct international meetings, and access all kinds of
information on any subject imaginable.
As mentioned earlier, the WWW consists of pages and pages of text,
images, sounds, and video. Unlike pages in a book, there is no maximum
size for
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