Network Technologies
There is no generally accepted taxonomy into which all computer networks fit, but two
dimensions stand out as important: Transmission Technology and Scale
. The
classifications based on these two basic approaches are considered in this section
.Classification Based on Transmission Technology
Computer networks can be broadly categorized into two types based on transmission
technologies:
• Broadcast networks
• Point-to-point networks Broadcast Networks
Broadcast network have a single communication channel that is shared by all the
machines on the network as shown in Fig sand All the machines on the
network receive short messages, called packets in certain contexts, sent by any machine
.
An address field within the packet specifies the intended recipient
. Upon receiving a
packet, machine checks the address field
. If packet is intended for itself, it processes the
packet; if packet is not intended for itself it is simply ignored.
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