Introduction to Computer Network.
Networks - It is group or systems of interconnected people or items.
Computer Networks - It is a network of computers connected with each other with cables or wireless. We can share files and resources as they are connected.
Internet - It is network of connected networks. Complex web of interconnected computer networks.
History of Computer Networks.
1957 - Sovient Union (Russia) launched Sputnik then USA launched ARPA (Advanced Research Project Agency). ARPA is for research and it was so big that one computer is not able to talk with other.
1960 - 1970 ARPA build communication system for the ARPA to talk and communicate.
1969 - ARPANET born. It mainly uses Transmission Control Protocol.
1980 - Started using TCP/IP in the ARPANET. It was started getting called as Internet.
1990 - CERN Researcher also felt the need to share information. They used Hyperlink Based Documents.
1990 - Tim Berner Lee introduced WWW. Here they used to store the hyper link based documents.