Operating System (OS)
A relocate program form is one which

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cannot be made to execute in any area of storage other than the one designated for it at the time of its coding or translation.
consists of a program and relevant information for its relocation.
All of these
can itself performs the relocation of its address-sensitive portions.

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

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