Interview Question

Created by admin on Sat, 17/11/2012 - 16:12
Question: 

What is the difference between preemptive scheduling and time slicing?

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Answer: 
Under preemptive scheduling, the highest priority task executes until it enters the waiting or dead states or a higher priority task comes into existence. Under time slicing, a task executes for a predefined slice of time and then reenters the pool of ready tasks. The scheduler then determines which task should execute next, based on priority and other factors.