This section is concerned with terms likely to be met when using the internet. Many internet terms are concerned with the transmission of data between computers within networks. Some of these terms and other related terms may be found in Section A12 Networking, Section B5 Communications components or Section D3 Communications technology.

The internet – also known as ‘the Net’ – began in the 1960s as a US military initiative to create secure and robust communications in time of conflict. The important concept was of a network of computers, each communicating with several other computers in the network, but not with all of them. A data transmission from one computer to another thus generally travelled by stages, handed on from one ...

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