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
detects/corrects errors
decides correct alternative by analysing several ones
inquires to see if a terminal has any transaction to send

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Operating System (OS)
Paging

is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks.
consists of those addresses that may be generated by a processor during execution of a computation.
is a method of allocating processor time.
None of these
allows multiple programs to reside in separate areas of core at the time.

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