The IP QoS which is fully known as QUALITY OF SERVICE mechanism that involves prioritizing traffic is DIFFERENTIATED SERVICES (DiffServ).
DIFFERENTIATED SERVICES help to differentiate ,arrange ,manage, control and focus on network traffic that are of great significance or important first before network that are less important or by their order of importance in order to provide quality of service and to avoid network traffic congestion which may want to reduce the quality of service when their is to much load on the network .
This is configured on the BIOS Setup. During computer start-up usually for windows system this can be accessed via pressing on ESC or Function keys on immediate start up.
