Broadcast systems generally allow the possibility of addressing a packet to all destinations by using a special cod e in the address field. When a packet with this code transmitted, it is received and processed by every machine on the network. This mode of operation is called broadcasting.
Broadcast networks have a single communication channel that is shared by all the machines on the network. Short messages, called packets sent by any machine are received by all the others. An address field within the packet specifies for whom it is intended. Upon receiving a packet, a machine checks the address field. If the packet is intended for itself, it processes the packet; if the packet is intended for some other machine, it is just ignored.
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