QoS
Short for Quality of Service, QoS is an ability of a product to provide a certain service by the settings within the product. For example, a user could assign different levels of QoS on a network router, allowing certain users or network traffic to have more or less priority than other users. For example, an administrator may set a higher priority on internal network traffic opposed to external traffic.
Also see: Network definitions, Network neutrality, Priority, Throttle, TOS, Variable Bit Rate