Question

Consider following groups, in context of operating system:

Group - I	Group - II
P. Gang Scheduling	1. Guaranteed Scheduling
Q. Rate monotonic Scheduling	2. Real time Scheduling
R. Fair share Scheduling	3. Thread Scheduling

Correct match of entries in Group - I and Group - Ii is:

1. P - 2, Q - 3, R - 1
2. P - 1, Q - 2, R - 3
3. P - 3, Q - 2, R - 1
4. P - 1, Q - 3, R - 2

Answer 1

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.