Operating System (OS)
The dispatcher

never changes task priorities
is always small and simple
actually schedules the tasks into the processor
puts tasks in I/O wait
None of these

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

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

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