You have seen the many strong features of switches that have to do with how a switch works. Viewed from the point of communication, you became acquainted with how a switch enables communication between devices. However, a switch will not always result in successful communication,because each port on a switch is in a separate collision domain, and all ports on a switch are in the same broadcast domain. This can cause network congestion, too.
Switching domains
Collision domains
As you now know, in general, collision occurs when two devices attempt to transmit data on the LAN at the same time. When a collision occurs, the devices have to resend the data, which degrades the network performance. Unlike the hub which forwards the...