could anyone differentiate Internet, Intranet and Extranet for me please?

Answer 1

Using as few words as possible:
Internet - A public network (EX: What you're using right now)
Intranet - A private network (EX: Hooking together computers in a LAN)
Extranet - A private network on the Internet (EX: Accessing Yahoo! Mail)

Answer 2

Internet is what you are on now. It's a public network that allows anybody access to websites.

Intranet is a private network within a determined number of users. An example is a business intranet that can be connected to by employees for company information

Extranet is a network used by business that is private but can be accessed by outside people who are given access. An example is a company that has a website and gives access to another company to share marketing information.

Answer 3

the internet is referring to resources which are generally available to the public, some of which may require a login to access specific information

An intranet is referring to resources which are only available within a company or organization.....any such location could be located anywhere in the world. Some resources may require a login to access more private information, like human resources records.

Extranet refers to an intranet, a portion of which is accessable to that organization's vendors or customers. The resources are not public like the internet. Another way to look at it is a business to business resource like a vendor to look at a retailer's sales records to get an idea of how their product is doing.....

Answer 4

Internet -- the worldwide network which the world wide web, and e-mail, and several other protocols use.

Intranet -- any "private" or "internal" network, accessible only from inside that organization.

Extranet -- a private network, as seen from an intranet.