Which of the following network topologies allows only communication to take place from one node at a time by passing a token around the network?

Star topology connects all devices to a central hub or switch; access control is managed by the central device, not by token passing.

Mesh topology provides multiple redundant paths between nodes and uses routing protocols for path selection, not token passing for access control.

Bus topology uses a shared cable where all devices compete for access using CSMA/CD, not token passing.

In a ring topology, each device is connected to exactly two others forming a closed loop. A token - a special control frame - is passed sequentially from node to node around the ring. A node must capture the token before it can transmit data, ensuring that only one node transmits at any given time and eliminating collisions. This is the defining characteristic of Token Ring (IEEE 802.5) technology.