These both os are multihtread os not multprocessing.

Multiprocessing is not possible on single processor system.It's only possible on multcore or multiprocessor system where more then two process can be scheduled simulteniously .So system having one processor can not do multiprocessing it is only psedo-multiporcessing.

Winodow uses Priority based preemptive scheduling while Unix uses Round robin preemtive scheduling.

In windows process or thread which has higer priority will take over but this will be the case in Unix.They all will be in Q regardless of their priority.

Window is component based syste.TCP/IP and File system are the component of the system where Unix is integrated system.