Operating System (OS)
Which of the following is not a characteristic of a daisy chaining priority control scheme?

it is relatively easy to add more devices to the chain
the failure of one device may affect other devices on the chain
None of these
priority is programmable
the number of control lines is independent of the number of devices on the chain

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Operating System (OS)
Scheduling is

None of these
not required in uniprocessor systems
unrelated to performance consideration
allowing jobs to use the processor
the same regard-less of the purpose of the system

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

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