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

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

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Operating System (OS)
Daisy chain is a device for

connecting a number of devices to a controller
connecting a number of controllers to a device
All of these
interconnecting a number of devices to a number of controllers
None of these

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