3b Internet, Intranet, Extranet ***

Question 0

Describe two characteristics of an intranet

Answer 0

One for identify, second for description
 provides the same services as the internet (1) availability limited to within an organisation / within the physical network infrastructure of the organisation (1)
 requires username and password to gain access (1) only used by authorised people from within the organisation (1)
 closed/private network/no outside access (1) only those computers that are part of the company’s LAN can gain access (1)
 uses the TCP / IP protocol (1) and html used to display web pages (1)

Question 1

Compare an intranet to an extranet

Answer 1

 an intranet provides an organisation with services
access
that are only available to authorised users whereas an extranet allows public access to part, or all, of a company’s intranet services via the Internet (1)
 an organisation’s intranet does not have to provide Internet access whereas an extranet is accessed using the Internet (1)
security
 an intranet requires usernames and id’s similarly an extranet is only available to approved parties (1)
connectivity
 an intranet is a secure private computer network using an organisation’s communications infrastructure whereas an extranet uses public telecommunication systems to securely share part of an organization’s information (1)
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