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at the network layer, congestion control mechanism takes place
congestion is Traffic in excess of network capacity. it occurs network layer and it is one of the function of network layer.
transport layer
This would be UDP. The User Datagram Protocol. It has no error checking or correction or congestion measures.
If you are talking strictly about routing, then layer 3 (the Network layer). There are some routing protocols, usually known as link-state routing protocols that are aware of network congestion problems and can re-route as necessary. Network congestion is not restricted to routing alone, however. At layer 4 (Transport Layer) there is a facility known as flow control, which can pause a sending network if the receiving network is too busy to accommodate all the packets.
what are the congestion prevention policy on network lay
transport layer
TCP and UDP are transport layer protocols; the OSI layer is layer 4 (transport)
Application layer, and Transport layer.
transport layer
transport layer
induces jitters in the QoS