ITPEC FE Morning October 2020 Question 16
ITPEC FE Morning October 2020 — Question 16 of 80
OS Dispatcher — allocates the CPU to the process selected by the scheduler.
The dispatcher hands control of the CPU to the ready process chosen by the scheduler. It performs context switching, mode switching, and jumping to the correct program location.
Why not others:
- (a) Multiple tasks appearing to run simultaneously — describes multitasking, not the dispatcher
- (c) Context information required for execution — describes the process context block (PCB)
- (d) Determining execution order — describes scheduling, not dispatching
Key distinction: The scheduler decides which process runs next; the dispatcher gives it the CPU.
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