Quality of Service Overview
A network's Quality of Service (QoS) refers to the properties of the network that directly contribute to the degree of satisfaction that users perceive relative to the network's performance. QoS can be considered good or poor on the basis of many factors, such as network delay, loss rates in the networks, load on the servers, and so on.
The perceived QoS depends on the type of application the user is running. For example, a network might have poor quality for listening to real-audio on the Web, but it might be sufficient to download a text file relatively quickly. Different applications that are running on a network make different assumptions about the environment and the network. The field of QoS deals with the mechanisms ...
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