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

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

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Operating System (OS)
A linker

is not necessary with variable partitions
must be run after the loader
creates a load module
is not needed with a good compiler
None of these

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