What is an internal computer system within an organization that uses the internet to link distant terminals to a central server?

An intranet refers to a private network that relies on internet protocols and technologies to securely share information and computing resources within an organization. This system links various terminals or computers spread across different locations to a central server, allowing employees to access information, collaborate, and communicate efficiently while maintaining security protocols that prevent external access.

The other options do not fit the definition provided in the question. The internet is a global system of interconnected networks that is public and accessible to anyone. An extranet extends elements of an intranet to external users, such as partners or suppliers, but it is not limited to internal personnel. The term "cable and wire" refers to the physical media used for data transmission but does not describe a computer system or network in itself. Thus, intranet is the appropriate term for an internal computer system that serves the needs of an organization while utilizing internet technologies.