What network element does a 'star' topology center around?

In a star topology, the network is structured with all peripheral nodes (such as computers or devices) connected to a central point, forming a layout that resembles a star. The central element in this topology typically serves as the primary conduit for data traffic among the connected devices.

A central switch or hub is critical in a star topology because it manages data packets between the devices. When one device wants to communicate with another, it sends the data to the central switch or hub, which then directs the data to the intended recipient. This centralized approach allows for easier management and troubleshooting since all connections point back to a single point.

Additionally, star topologies are favored for their scalability, as new devices can easily be added by connecting them to the central switch or hub without significant reconfiguration. This distinct characteristic of utilizing a central switch or hub is what makes it the correct answer in this context.