Your employer has asked your team to define and implement a new network area that will be accessible to authorized 3rd party companies through a dedicated WAN connection. A critical requirement is that access to this new network area should not also allow network access to the companies internal network and systems. What type of network best defines this setup?
Answer Description
This type of network setup is called an Extranet. An extranet is a private network that allows access to certain authorized parties. Most commonly this would be to share systems like a file server between two companies that have created a long-term partnership.
Wikipedia
An extranet is a controlled private network that allows access to partners, vendors and suppliers or an authorized set of customers – normally to a subset of the information accessible from an organization's intranet. An extranet is similar to a DMZ in that it provides access to needed services for authorized parties, without granting access to an organization's entire network. An extranet is a private network organization.
Historically the term was occasionally also used in …
Extranet - Wikipedia, the free encyclopedia