eChapter Name: The Internet
9789389992830
eBook Name: INFORMATION TECHNOLOGY IN VETERINARY SCIENCE
by VIVEK M. PATIL, VIKAS VOHRA
Evolution of the Internet
The Internet, as we know it today had a very humble beginning. J C R Licklider of the Massachusetts Institute of Technology envisioned the Internet as far back as 1962 in a series of memos written by him that talked about social interactions that could be enabled through networking, a concept that he termed his “Galactic Network”. He joined DARPA (Defense Advanced Research Projects Agency) in October 1962 and was its first research head. There, in collaboration with Lawrence G Roberts and other scientists in 1965, the ARPANET (Advanced Research Projects Agency Network) was conceived. With other developments, ARPANET was transformed into the Internet as we know it today. The technology involved in this was a very basic packet switching network that later moved to include packet satellite networks, ground-based packet radio networks and other networks. In packet switching mode, the hub router, which acts as the intermediary, decides the best path for sending or receiving data packets, unlike circuit switching mode (used in telephony) in which there is a dedicated path by which the data travels from the source to the destination.
The future of networking was based on this skeleton. Further down the line, the TCP/IP (Transmission Control Protocol/Internet Protocol) was developed, which had the ability to address networks and machines further downstream. Other technologies like telnet, e-mail, internet telephony etc, were also developed subsequently. By 1990, the ARPANET was decommissioned and TCP/IP had displaced most other Wide Area Networking (WAN) protocols and was fast becoming the accepted protocol for internetworking. After a while, the World Wide Web (WWW) came into existence. A consortium called the World Wide Web Consortium (W3C) was formed in 1992 and it had taken on the responsibility for evolving the various protocols and standards associated with the web. Soon after this, commercialization of the internet started taking place. There was a marked increase in the number of communities across the internet. Bulletin Board Services and Usenet groups were now home to more computer users than ever before. With the advent of such information, corporations and businesses also started looking at the internet in terms of business viability. In 1994, Pizza Hut started offering pizza ordering on its Web page while First Virtual, the first ‘cyberbank’, launched its online presence. By this time, there were more than 38,64,000 hosts on the Internet. Since then, the Net has grown rapidly and the process continues to this day.
Though the Internet hit India in the late 1980s, it was deemed fit only for researchers and scientists. Commercial internet access was first introduced by VSNL in August 1995. Today internet in India has ballooned and India has become a giant in the IT Enabled Services (ITES) field. With falling internet access costs and increasing users, India’s ranking in terms of internet users is rising fast.
The Internet is growing at an amazing rate. The main reason for this is that the Internet has now become an accepted part of the mainstream urban life. It is used for almost everything imaginable, from recreation and entertainment to learning about rocket science. However, not everything about is good. There is an information overload and not all the data that is available is true and should not be accepted at face value. The internet is not limited to the PC anymore and has percolated down to various devices thanks to advancement in technologies like GPRS, EDGE, CDMA, WiFi etc. through which it can be accessed with a mobile device.