Internet has become essential part in every human life to carryout his/her activities at work place and to communicate with friends residing in other countries.
There are several stages in development of internet:
in 1958, Advanced research project agency (ARPA) has made an initiative to design a computer network
in 1969, the ARPA has launched ARPANET computer network
in 1965, the first ever wide area network was launched
in 1971, a electronic mail system was developed
in 1974, for first time the word internet is used which is abbreviation for internetworking
in 1982, TCP/IP used as communication protocol for internet was created
in 1976, the first ever local Ethernet was developed
in 1991, the world wide web (WWW) has appeared on internet
in 1994, the first online store and virtual bank was created
in 2011, the total number of websites on internet has exceeded 357 million
According to Netcraft, the number of websites have reached 620, 132, 319.