Answer:
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:
