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Congestion in networking

What is congestion? Congestion is traffic. Interference of two or more packets . Reasons:-  Sending packets the same time. Definition:  Congestion is a situation in which number of packets in network is greater than capacity of network or channel. Total load > Capacity of channel  , is the main reason of congestion Effect of congestion :- Two main factors are affected by congestion 1) Delay versus load. 2) Throughput versus load. When load is less than network capacity delay is permission and vice versa . Delay depends on propagation delay and transmission delay . propagation time , transmission time, buffer time Congestion is directly  proportional to Delay and Congestion is directly proportional to Load Throughput:- Number of packets successfully delivered is called throughput . Throughput is inversely proportional to congestion When less congestion all packets will be successfully delivered means high throughput. causes of congestion : If...