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

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

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Operating System (OS)
Trojan-Horse programs

None of these
are hidden programs that do not show up on the system
are legitimate programs that allow unauthorized access
usually are immediately discovered
do not usually work

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Operating System (OS)
Which of the following functions is(are) performed by the loader

allocate space in memory for the programs and resolve symbolic references between object decks
None of these
adjust all address dependent locations, such as address constants, to correspond to the allocated space.
physically place the machine instructions and data into memory.
All of these

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