Operating System (OS)
Feed back queue

require manual intervention to implement properly
dispatch tasks according to execution characteristics
None of these
are very easy to implement
are used to favor real-time tasks

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

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

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