What type of device combines hardware and software to manage shared resources on a network?

A network device is a broad term that encompasses any equipment that facilitates communication and manages data traffic within a network. This includes a combination of hardware and software working together to manage and optimize shared resources, such as bandwidth, connections, and data routing.

While specific devices such as switches, hubs, and routers serve particular functions in a network, they can be considered types of network devices. However, the term "network device" encapsulates the entire category and implies a level of functionality in managing shared resources effectively.

In contrast, switches primarily function to direct data packets between devices on the same network, hubs are basic devices that broadcast incoming data packets to all ports regardless of the destination, and routers are responsible for directing data between different networks. Each has its specific role, but none encapsulate the full scope of managing shared resources as directly as the broader term "network device."

Thus, selecting "network device" as the answer reflects an understanding of how various hardware and software components work together to manage a network effectively.