Question

Preemptive and cooperative both are type of
1) Multiprogramming
2) Multitasking
3) Multi-user
4) None

Answer 1

2) Multitasking
Cooperative-
Once started, a task within a co-operative scheduling system will continue to run until it relinquishes control. This is usually at its synchronisation point.

Preemptive-
In a co-operative system a task will continue until it explicitly relinquishes control of the CPU. In a pre-emptive model tasks can be forcibly suspended. This is instigated by an interrupt on the CPU.