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

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

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

None of these
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
branches off to the interrupt service routine immediately
halts for a predetermined time

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Operating System (OS)
A real time operating system is most likely to be used for which of the following task?

Controlling access to a shared printer in a network
Managing the access to system files in a laptop computers
Controlling the fuel injection system of an automobile engines
Ensuring that system clock works correctly on server

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