In what mode does a switch operate, compared to a hub?

A switch operates in full-duplex mode, which allows for simultaneous data transmission and reception between devices connected to it. This capability significantly enhances network performance and efficiency compared to a hub, which operates in half-duplex mode.

In a hub, devices can either send or receive data at any given time, meaning that communications must take turns. This results in potential collisions and delays, especially as more devices are added to the network. Conversely, with a switch in full-duplex mode, data can flow in both directions at the same time, effectively doubling the potential bandwidth between devices. This leads to faster communication and less chance of collisions, boosting overall network performance.

Understanding the difference in operational modes is crucial in network design and optimization, especially in environments where data traffic is heavy. It highlights why switches are preferred over hubs in modern networking setups.