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

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
decides correct alternative by analysing several ones

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Operating System (OS)
Seeks analysis

is used for analyzing device busy problems
is used for analyzing paging problems
None of these
is only shown on real-time displays
is used for analyzing control-unit busy problems

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Operating System (OS)
Virtual Memory

consists of those addresses that may be generated by a processor during execution of a computation.
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.
is a method of allocating processor time.
allows multiple programs to reside in separate areas of core at the time.
None of these

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