Q.

Network congestion occurs                    

A. in case of traffic overloading
B. when a system terminates
C. when connection between two nodes terminates
D. in case of transfer failure
Answer» A. in case of traffic overloading
Explanation: network congestion occurs when traffic in the network is more than the network could handle. to avoid network congestion, the network management uses various open-loop and closed-loop congestion control techniques.
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