Operating System (OS)
A Processor

is a device that performs a sequence of operations specified by instructions in memory.
is the device where information is stored
None of these
is a sequence of instructions
is typically characterized by interactive processing and time of the CPU

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

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

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