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
adjust all address dependent locations, such as address constants, to correspond to the allocated space.
All of these
None of these
physically place the machine instructions and data into memory.

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Operating System (OS)
The CPU, after receiving an interrupt from an I/O device

halts for a predetermined time
None of these
branches off to the interrupt service routine immediately
hands over control of address bus and data bus to the interrupting device
branches off to the interrupt service routine after completion of the current instruction

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Operating System (OS)
The LRU algorithm

pages out pages that have been used recently
pages out pages that have not been used recently
None of these
pages out the first page in a given area
pages out pages that have been least used recently

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Operating System (OS)
Data encryption

is mostly used by public networks
is mostly used by financial networks
cannot be used by private installations
None of these
is not necessary, since data cannot be intercepted

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