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

branches off to the interrupt service routine after completion of the current instruction
None of these
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

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Operating System (OS)
Thrashing can be avoided if

the pages, belonging to the working set of the programs, are in main memory
the speed of CPU is increased
the speed of I/O processor is increased
All of these
None of these

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Operating System (OS)
Round-robin scheduling

is quite complex to implement
gives each task the same chance at the processor
None of these
allows processor-bound tasks more time in the processor
allows interactive tasks quicker access to the processor

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