computer learning
Friday 3 April 2015
Friday 27 March 2015
How does a E-mail work ?
Just as a letter makes stops at different postal stations along
the way to its final destination, e-mail passes from one computer, as a mail
server. To another as it travels over the internet. Once it arrives at the
destination mail server, it is stored in an electronic mailbox until the
recipient retrieves it. This whole process can take seconds, allowing you to
quickly communicate with people around the world at any time of the day and
night
Thursday 26 March 2015
Internet--------the history
In 1969, the U.S.
Defence Department funded a project to devlop a network. Which can withstand
the bombing. Basically the idea was to develop a very secured network which can
work even after a nuclear attack. This project was known as ARPANET. The proposed
network was not supposed to have a central control-which would be an obvious
target. Ten years of research brought local area network LANs.
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