Final answer:
A token ring hub improves network efficiency by reducing collisions as it controls how the data packets, or tokens, are passed around the network. This avoids simultaneous data transmissions, thereby enhancing network reliability and resource management.
Step-by-step explanation:
The token ring hub improves a network by reducing collisions and improving efficiency. A token ring network is designed to prevent the collisions found in bus or star topologies because data packets, known as tokens, are passed around the ring in a controlled manner. Each device gets a chance to transmit data when it receives the token, eliminating the chance of two devices trying to send data at the same time and therefore reducing collisions. As a result, efficiency is improved because data packets do not have to be retransmitted due to collisions. The token ring protocol also facilitates better management of network resources making the network both robust and reliable.