Internet Interanet and Exranet
What is Internet?
The Internet is a global network of billions of computers and other electronic devices. With the Internet, its possible to access almost any information, communicate with anyone else in the world, and do much more electronic devices. With the Internet, its possible to access almost any information, communicate with anyone else in the world, and do much more. Internet is global communication accessed through the Web. The Internet is a global system of interconnected computer networks that use the standard Internet Protocol Suite (TCP/IP) to serve billions of users worldwide.
What is Interanet?
Intranet is shared content accessed by members within a single organization. An intranet is a private computer network that uses Internet Protocol technologies to securely share any part of an organization's information or operational systems within that organization.
What is Extranet?
Extranet is shared content accessed by groups through cross-enterprise boundaries. An extranet is a private network that uses Internet protocols, network connectivity. An extranet can be viewed as part of a company's intranet that is extended to users outside the company, usually via the Internet.
The Internet, extranets, and intranets all rely on the same TCP/IP technologies. However, they are different in terms of the levels of access they allow to various users inside and outside the organization and the size of the network. An intranet allows for restricted access to only members of an organization.
An extranet expands that access by allowing non-members such as suppliers and customers to use company resources. The difference between the Internet and extranets is that while the extranet allows limited access to non-members of an organization, the Internet generally allows everyone to access all network resources.
How does internet works?
Internet is a global network of physical cables, which can include copper telephone wires, TV cables, and fiber optic cables. Even wireless connections like Wi-Fi and 3G/4G rely on these physical cables to access the Internet. When you visit a website, your computer sends a request over these wires to a server. A server is where websites are stored, and it works a lot like your computers hard drive. Once the request arrives, the server retrieves the website and sends the correct data back to your computer.