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

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

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Operating System (OS)
Thrashing can be avoided if

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

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Operating System (OS)
File record length

should be chosen to match the data characteristics
Should always be variable
should always be fixed
depends upon the size of the file
None of these

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