7. Explain about congestion control.
Congestion is an important issue that can arise
in packet switched network. Congestion is a situation in Communication Networks
in which too many packets are present in a part of the subnet, performance
degrades. Congestion in a network may occur when the load on the network (i.e.
the number of packets sent to the network) is greater than the capacity of the
network (i.e. the number of packets a network can handle.)
In other words when too much traffic is
offered, congestion sets in and performance degrades sharply.
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