Operating System (OS)
Addressing modes

defines the fundamental method of determining effective operand addresses
None of these
are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.
performs indicated operations on two fast registers of the machine and leave the result in one of the registers.
All of these

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Operating System (OS)
A critical region is

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

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Operating System (OS)
Which of the following is true for machine language.

Repeated execution of program segments
Depicting flow of data in a system
A sequence of instructions which, when followed properly, solves a problem
the language which communicates with the computer using only the binary digits 1 and 0.
None of these

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