Operating System (OS)
Object modules generated by assemblers that contain unresolved external references are resolved for two or more object modules by a/an

compiler
operating system
None of these
linker
loader

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Operating System (OS)
The LRU algorithm

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

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