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* Messages broken into smaller units (packets)
* Source & destination addresses in packet
header
* Connectionless, packets routed independently
(datagram)
* When a message arrives at the packet switch, the
destination address is examined to determine the next hop.
* Packet may arrive out of order
* Re-sequencing maybe required at destination.
* Pipelining of packets across network can reduce
delay, increase throughput
*
Lower delay that message switching, suitable for
interactive traffic
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