超星 - Chapter 4 CPU Scheduling

单选题

Which algorithm is defined in Time quantum?

A. shortest job scheduling algorithm
B. round robin scheduling algorithm
C. priority scheduling algorithm
D. multilevel queue scheduling algorithm

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单选题

Process are classified into different groups in ____________

A. shortest job scheduling algorithm
B. round robin scheduling algorithm
C. priority scheduling algorithm
D. multilevel queue scheduling algorithm

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单选题

In multilevel feedback scheduling algorithm ____________

A. a process can move to a different classified ready queue
B. classification of ready queue is permanent
C. processes are not classified into groups
D. none of the mentioned

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单选题

Which one of the following can not be scheduled by the kernel?

A. kernel level thread
B. user level thread
C. process
D. none of the mentioned

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单选题

CPU scheduling is the basis of ___________

A. multiprocessor systems
B. multiprogramming operating systems
C. larger memory sized systems
D. none of the mentioned

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单选题

With multiprogramming ______ is used productively

A. time
B. space
C. money
D. all of the mentioned

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单选题

What are the two steps of a process execution?

A. I/O & OS Burst
B. CPU & I/O Burst
C. Memory & I/O Burst
D. OS & Memory Burst

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单选题

A process is selected from the queue by the __ scheduler, to be executed.

A. blocked, short term
B. wait, long term
C. ready, short term
D. ready, long term

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单选题

In the following cases non – preemptive scheduling occurs?

A. When a process switches from the running state to the ready state
B. When a process goes from the running state to the waiting state
C. When a process switches from the waiting state to the ready state
D. All of the mentioned

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单选题