Operating System (OS)
Operating system is

All of these
A collection of hardware components
None of these
A collection of input-output devices
A collection of software routines

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Operating System (OS)
The term 'polling' in a computer means a process by which a computer system

None of these
inquires to see if a terminal has any transaction to send
multiplexes the inputs and updates the memory accordingly
detects/corrects errors
decides correct alternative by analysing several ones

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Operating System (OS)
The advantage(s) of incorporating the macro processor into pass 1 is(are):

All of these
Functions are combined and it is not necessary to create intermediate files as output from the macros processor and input to the assembler.
many functions do not have to be implemented twice.
None of these
more flexibility is available to the programmer in that he may use all the features of the assembler in conjunction with macros.

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