INTERNET
The Internet, or the Net, is the worldwide, publicly accessible system of interconnected computer networks that transmit data by packet switching using the standard Internet Protocol (IP).
It consists of millions of smaller business, academic, domestic and government networks, which together carry various information and services, such as electronic mail, online chat, and the interlinked Web pages and other documents of the World Wide Web.
Internet is one of the uses of communication. Through the Internet, society has access to global information and instant communication.
INTRANET
An Intranet (intra means within) is an internal network that uses Internet technologies and it is a small version of the Internet that exists within an organisation.
An intranet is a private computer network that uses Internet protocols, network connectivity and possibly the public telecommunication system to securely share part of an organisation’s information or operation with its employees.
Intranet generally makes company information accessible to employees and facilitates working in groups.
Simple intranet applications include electronic publishing of organisational materials such as telephone directories, event calendars and job postings.
EXTRANET
An extranet is a private network that uses Internet protocols, network connectivity, and possibly the public telecommunication system to securely share part of a business’s information or operations with suppliers, vendors, partners, customers or other businesses.
Package shipping companies, for example, allow customers to access their network to print air bills, schedule pickups, and even track shipped packages as the packages travel to their destinations.
COMPARISON BETWEEN INTRANET AND INTERNET
COMPARISON BETWEEN INTERNET AND EXTRANET
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