Applications send data by submitting it to the operating system, to be carried across the network.
Once data is submitted to the operating system, it becomes network traffic. Network QoS refers to the ability of the network to handle this traffic such that it meets the service needs of certain applications. This requires fundamental traffic handling mechanisms in the network, the ability to identify traffic that is entitled to these mechanisms and the ability to control these mechanisms. QoS Parameters Different applications have different requirements regarding the handling of their traffic in the network. Applications generate traffic at varying rates and generally require that the network be able to carry traffic at the rate at which they generate it.