Big computers that contains vacuum tube

Computer size shrunk

Computer network maintained by univerisities

Computer network is used by D.O.D (Department Of Defense)

D.OD created first functioning Internet

A.R.P.A.N.E.T expanded gradually and by 1984 and reached 1000 hosts

New network created

connecting internet with computers and engineering research

expanding rapidly and reached 100,000 host by 1990

NSFNET become main network line and removed the ARPANET

World Wide Web appeared

Networks of networks

Used to enable communication on internet

coordinate the addresses of all the computers on the Internet and the away resources are passed around

Interlinked Hypertext (www)

electronic Mail

System of Interlinked hypertext documents accessed via Internet

Private network

Allowed only to authorized organization only

firewalls

Each computer on the internet has to have an address

The address is known as IP address

standard IP address following specific format exp: 192:43:34:8

Information from one computer will be divided into

Packet will transmitted through

Name we use when accessing a host/server

Name address has corresponding number

a host usually will have IP address and named address

extension to domain name

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