In which of the following topologies does data travel in a circle?

The correct answer is that data travels in a circle in a ring topology. In a ring topology, each device is connected to two other devices, forming a circular pathway for data. When data is sent from one device, it circulates around the ring until it reaches its destination. Each device in the ring acts as a repeater, regenerating the signal to ensure it travels effectively around the loop.

This circular movement of data is characteristic of the ring topology, distinguishing it from other topologies. In contrast, in a star topology, all devices are connected to a central hub, with data traveling outward from the hub. In a bus topology, all devices share a common communication line, and data travels in both directions along that line. A mesh topology has devices interconnected in a way that allows for multiple paths for data but does not conform to a circular pattern.

The nature of data transmission in a ring topology is fundamental for understanding how networks can be designed and the impact of topology on data flow.