Operating System (OS)
....... is the layer of a computer system between the hardware and the user program

None of these
Operating environment
Operating system
System environment

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Operating System (OS)
What is dispatch latency ?

The whole time taken by all processor
The time taken by the dispatcher to stop one process and start another
The time taken by the processor to write a file into disk
None of the listed here

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Operating System (OS)
The main function of the dispatcher (the portion of the process scheduler) is

assigning ready process to the CPU
suspending some of the processes when the CPU load is high
swapping a process to the disk
bring processes from the disk to the main memory
None of these

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