Operating System (OS)
Advantage(s) of using assembly language rather than machine language is (are):

Introduction of data to program is easier
All of these
Addresses any symbolic, not absolute
None of these
It is mnemonic and easy to read.

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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
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

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Operating System (OS)
A critical region is

a program segment that often causes unexpected system crashes
a program segment that has not been proved bug-free
one which is enclosed by a pair of P and V operations on semaphores
none is the above
a program segment where shared resources are accessed

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