The SupportsQualityofService property indicates whether the protocol is capable of Quality of Service (QOS) support via the ...

The SupportsQualityofService property indicates whether the protocol is capable of Quality of Service (QOS) support via the underlying layered service provider or transport carrier. QOS is a collection of components that enable differentiation and preferential treatment for subsets of data transmitted over the network. QOS loosely means subsets of data get higher priority or guaranteed service when traversing a network. 
Values:TRUE or FALSE. A value of TRUE indicates the protocol supports QOS.