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

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

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Operating System (OS)
Capacity planning

None of these
requires detailed system performance information
is not needed in small installations
does not depend on the monitoring tools available
is independent of the operating system

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