Correct Answer - Option 3 : P - 3, Q - 2, R - 1
Gang scheduling for parallel systems that schedules related threads or processes to run simultaneously on different processors.
Rate monotonic scheduling is used in real-time operating systems with a static-priority scheduling class. The static priorities are assigned on the basis of the cycle duration of the job: the shorter the cycle duration is, the higher is the job’s priority.
Fair Share Scheduling is a scheduling strategy in which the CPU usage is equally distributed among system users or groups, as opposed to equal distribution among processes. It is also known as Guaranteed scheduling.