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PACKET SWITCHES:
To span large distances or several computers, networks must removed shared phase with packet switches. Each switch moves whole packet from one connection to another. That's why they are known as packet switches. A packet switch consists of a small device with network interfaces, a storage and a program dedicated to packet switching application.
A packet switch is given in the figure below.
Connection Establishment TCP transmits data in full duplex mode. When two TCP is two machines are connected they are able to send segments to each other simultaneously. This
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Why do we require to subtract two from number of hosts?
Half duplex is analogous to a one a lane bridge, it can handle traffic in both directions but no at the similar time.
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