Discuss the differences among Internet, Intranet, Extranet and World Wide Web, with practical examples.
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Internet :

The network formed by the co-operative interconnection of millions of computers, linked together is called Internet.

Intranet :

It is an internal private network built within an organization using Internet and World Wide Web standards and products that allows employees of an organization to gain access to corporate information.

Extranet :

It is the type of network that allows users from outside to access the Intranet of an organization.

Explanation:

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