INTERNET
- The Internet is a global network of interconnected network, enabling users to share information along multiple channels.
- A computer that connects to the Internet can access information from a vast array of available servers and other computers by moving information from them to the computer’s local memory.
- A majority of widely accessible information on the Internet consists of inter-linked hypertext documents and other resources of the World Wide Web (WWW).
- Computer users typically manage sent and received information with web browsers; other software for users’ interface with computer networks includes specialised programs for electronic mail, online chat, file transfer and file sharing.
- The movement of information in the Internet is achieved via a system of interconnected computer networks that share data by packet switching using the standardised Internet Protocol Suite (TCP/IP).
- It is a “network of networks” that consists of millions of private and public, academic, business, and government networks of local to global scope that are linked by copper wires, fiber-optic cables, wireless connections, and other technologies.
- It is really a way for computers to communicate and share informations.
- It is a fast developing net and is of outmost importance for public sector undertakings, educational institutions, research organisations etc.
Services of Internet
- The internet enables user to exchange data/information and communicate via electronic media.
- E-mail messages are usually encoded in American Standard Code for Information Interchange (ASCII) text.
- A popular protocol for sending e-mail is Simple Mail Transfer Protocol (SMTP) and for receiving it is POP3.
Chat
- It is the exchange of typed message by netizens.
- It enables netizens to ‘talk not vocal’ by typing and sending the messages back and forth.
- It has two modes—computer to telephone and computer to computer.
- Internet Relay Chart (IRC) developed by Jarkko Oikarinen in 1998.
Video Conferencing
- A service that allows a group of users to exchange video information over the internet.
- It include an audio teleconference facility.
- Each participant’s computer must have a camera, microphone and earphones (or speaker).
