Operating System (OS)
Feed back queue

None of these
require manual intervention to implement properly
dispatch tasks according to execution characteristics
are used to favor real-time tasks
are very easy to implement

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Operating System (OS)
The CPU, after receiving an interrupt from an I/O device

branches off to the interrupt service routine immediately
halts for a predetermined time
hands over control of address bus and data bus to the interrupting device
None of these
branches off to the interrupt service routine after completion of the current instruction

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