Differentiate among Internet, Intranet and Extranet?

Internet, intranet, and extranet are three different types of networks that are used for communication and information sharing. Here are the differences between these three:

1. Internet: The Internet is a global network of computers and servers that is accessible to anyone with an internet connection. It is a public network, and information is transmitted over the internet using standard protocols such as TCP/IP. The internet is used for various purposes, such as browsing websites, sending emails, and downloading files.
2. Intranet: An intranet is a private network that is used within an organization. It is a closed network and can only be accessed by authorized personnel within the organization. The intranet uses the same technologies as the internet but is password protected to ensure security. An intranet is used for sharing information and collaborating within the organization.
3. Extranet: An extranet is a private network that is used to connect an organization with its suppliers, customers, or other external entities. It allows external users to access certain parts of an organization’s intranet, usually through a secure login. An extranet is used for sharing information and collaborating with external entities.

In summary, the internet is a public network that is accessible to anyone with an internet connection, while intranet and extranet are private networks used within an organization and between an organization and external entities, respectively. The intranet is used for sharing information within an organization, while an extranet is used for sharing information with external entities.