Chapter09Testbank-OS8e - Operating Systems Internals and Design Principles 8 th Edition Testbank Chapter 9 Chapter 9 Uniprocessor Scheduling TRUE\/FALSE

Chapter09Testbank-OS8e - Operating Systems Internals and...

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Operating Systems: Internals and Design Principles, 8thEdition Testbank Chapter 9Chapter 9 – Uniprocessor SchedulingTRUE/FALSE QUESTIONS:TF1) In a multiprogramming system multiple processes exist concurrently in main memory.TF
2) The key to multiprogramming is scheduling.
3) The medium-term scheduler is invoked whenever an event occurs that may lead tothe blocking of the current process or that may provide an opportunity to preempt acurrently running process in favor of another.
4) Scheduling affects the performance of the system because it determines which proceswill wait and which will progress.
5) The main objective of long-term scheduling is to allocate processor time in such a wayas to optimize one or more aspects of system behavior.TF
6) In most interactive operating systems adequate response time is the criticalrequirement.
7) One problem with a pure priority scheduling scheme is that lower-priority processesmay suffer starvation.
8) FCFS performs much better for short processes than long ones.
9) Round robin is particularly effective in a general purpose time sharing system ortransaction processing system.TF
10) The objective of a fair-share scheduler is to monitor usage to give fewer resourcesto users who have had more than their fair share, and more to those who have hadless than their fair share.

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