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The Internet

How did the internet develop?

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How did the internet develop?

The internet as we know it today is

actually a very large wide area network

(WAN) connecting computers and

networks around the world.

It makes it possible for millions of

computer users to connect to oneanothervia telephone lines, cable

lines, and statellites

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Internet was born in the late 1960s

Advanced Research Projects Agency

(ARPA) or the US Department of

Defense linked together mainframe

computers to form a communications

network.

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The Agencys main objectives

Create a communication system that

could survive a nuclear attack or natural

disaster

Provide communication links to its

users in remote locations

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ARPANetEarly version of the internet was known as

ARPANet

Backbone Is a term used to describe a structure that

handles the major traffic in a networked system

much like a major highway

Network Backbone

is a cyberspace highway made up ofhigh-speed

cables and switching stations

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internetworkingThe process oflinking a collection of

networks is called internetworking

This term is where the internet got its

name

The term internet was officially adopted

in 1983.

More commonly referred to as the Net

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ARPANetUsers originally used the internet to

share

Scientific and engineering information

Other uses discovered

Emailmost popular

Expansion into Europe in 1970s

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ARPANet splits into twoparts

ARPANet and MILNet

MILNet

Various defence agencies and the military

ARPANet

Research and development network International communication tool for the

academic community

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Mid 1980sSpeed of ARPANet backbone no

longer sufficient

National Science Foundation (NSF)

created a new high-speed network

NSFNet

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NSFNetTwo main objectives

To interconnect supercomputing centres

so they could access one anothers

recources

To give academic and research centres

access to one another for purposes ofexchanging information

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G

rowth of InternetFueled by purchase ofpersonalcomputers

Growing demand foranytime,anywhere

NSFNet academics only

Bell, AT&T and Nortel built high-speed backbones and new networksthat used the same protocols

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TCP/IP (Transmission Control

Protocol/Internet Protocol

Accepted means ofcommunication

Protocol

Is an agreed upon format for transmitting

data between two or more devices

A set of formal rules for transmitting data

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TCIP/IP

Available for free

Rapid growth of the internet

Set up internet accounts with

telecommunications companies and

Internet service providers (ISPs)

Internet - most popular use

Email and file sharing