|  | 5.5 |

Collisions and Collision Domains in Shared Layer Environments

| 5.5.7 | Hubs and collision domains

You have already learned that another name for a hub is a multiport repeater. Any signal that comes in one port of the hub is regenerated, retimed, and sent out every other port. Therefore, hubs, which are useful for connecting large numbers of computers, extend collision domains. The final result is diminished network performance if all the computers on that network are demanding large bandwidths, simultaneously.