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| 8.1 |  | Quality of Service Requirements |
| 8.1.1 |  | Quality of Service defined |

QoS refers to the ability of a network to provide improved service to selected network traffic over various underlying technologies including Frame Relay, ATM, Ethernet and 802.3 networks, SONET, and IP-routed networks.

QoS features provide improved and more predictable network service by offering the following services:

- Dedicated bandwidth
- Improved loss characteristics
- Congestion management and avoidance
- Traffic shaping
- Prioritization of traffic

In a network, the goal is to move information from one point to another and the characteristics that define the quality of this movement are:

- Loss
- Delay
- Delay Variation also known as jitter