It is unlikely that you will see a LAN that utilizes a hub device, but I have included it here (and bridges, later) to provide you with a better understanding of the benefits of a switched network. A hub is a dumb device. It acts as an interconnectivity device that applies no logic to the transmission of data. It just forwards the data out of all of its ports, which means the data is sent to all the connected devices, each of which will have to process the data marginally to see if the data is for it or not. This is shown in the following diagram:
Figure 2.18: A hub network
When Computer A sends data to Computer B, the hub ...
