Final answer:
For a setup involving a file server, network shares, and print server functionality for 25 computers, a Domain network is best suited as it offers centralized management, better security, and scalability compared to other setups.
Step-by-step explanation:
For an office of 25 computers that requires a file server, network shares, and print server functionality, the best network setup would be a Domain based network. An ad-hoc network is a temporary, peer-to-peer network suitable for a small number of devices and lacks central management. A workgroup is a simple, peer-to-peer network where each computer is managed separately and might be suitable for very small offices but lacks the central management and scalability needed in this scenario. A token ring is an outdated network technology and not related to the type of network control being sought.
A Domain network, on the other hand, is managed by a server operating system like Microsoft Windows Server, which will allow for centralized management of users, computers, security, and shared resources. This means that the file server and print server can be managed centrally, providing better security, scalability, and ease of use for the office in question. The office computers will be joined to the domain and the users will log in to the domain to access shared resources and printers managed by the domain's administrators.