Operating System (OS)
The LRU algorithm

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

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Operating System (OS)
A Processor

is a sequence of instructions
None of these
is the device where information is stored
is a device that performs a sequence of operations specified by instructions in memory.
is typically characterized by interactive processing and time of the CPU

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Operating System (OS)
System maintenance:

is necessary on all systems, regardless of how good
always requires several programs
is usually not necessary
None of these
is not required if the system is well written

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