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| 8.2 |  | Quality of Service mechanisms |
| 8.2.1 |  | Quality of Service mechanisms |

Once the QoS requirements of the network have been defined, an appropriate service model must be selected. A service model is a general approach or a design philosophy for handling the competing streams of traffic within a network. There are three service models from which to choose:

- Best-effort
- Integrated
- Differentiated

The service model selected must be capable of meeting the QoS requirements of the network and integrating any networked applications.