Operating System (OS)
The advantage of a command processor running only built-in commands is:

the command set being common across different hardware configurations
None of these
users can create system programs and run them as commands
flexibility to the users in running lists of commands by simply collecting them in named batch command files
the processing is much faster than would other-wise be the case when user defined commands are used

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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 not been used recently
pages out pages that have been least used recently

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Operating System (OS)
Memory

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

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