Final answer:
An intranet is a private network used by companies for internal communication and data access, distinct from the Internet which is global, and Ethernet which refers to local network technologies.
Step-by-step explanation:
Large companies often have internal web pages, which are known as an Intranet. An intranet is a private network accessible only to an organization's staff. This internal system enables employees to access data pertinent to the company and facilitates communication among different departments. An extranet can be thought of as an extension of the intranet, where outside entities such as business partners and vendors can also have restricted access. This is different from the Internet, which is a global network providing a broad array of information and communication facilities.
Large companies often have internal web pages, called intranet which allow employees to access internal data and facilitate communication among departments. The intranet is a private network that is only accessible to authorized personnel within the company. It is separate from the internet, which is a global network of interconnected computers accessible to the public. An extranet, on the other hand, is a private network that allows selected external parties, such as suppliers or clients, limited access to certain internal resources of the company.