What primary function does a Network Operating System (NOS) serve?

The primary function of a Network Operating System (NOS) is to control and manage network operations. A NOS facilitates the sharing of resources and services among multiple computers in a network. It provides essential services such as user authentication, file sharing, printer access, and network configuration, ensuring that these operations can be performed efficiently and securely.

By managing these network operations, the NOS helps establish communication between devices, oversee network traffic, and maintain the overall health and functionality of the network. This capability is crucial for enabling multiple users and devices to connect and operate harmoniously within the same environment, making the NOS a foundational element in network technology.

Other options may represent functions that can be performed within a network environment, but they do not encompass the broad and critical role of managing and controlling the entire network, which distinguishes the NOS. For instance, while file transfer protocols and establishing internet connectivity are important, they are specific functions that fall under the broader umbrella of the network operations managed by a NOS.