misant: "Any computer connected to the same Ethernet repeater or switch is a member of the same broadcast domain." из приведенный вами ссылки.
"Broadcast is a type of communication, where the sending device send a single copy of data and that copy of data will be delivered to every device in the network segment. Brodcast is a required type of communication and we cannot avoid Broadcasts, because many protocols (Example: ARP and DHCP) and applications are dependent on Broadcast to function.
