Operating System (OS)
The LRU algorithm

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

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Operating System (OS)
File record length

Should always be variable
None of these
should always be fixed
should be chosen to match the data characteristics
depends upon the size of the file

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Operating System (OS)
The function(s) of the Syntax phase is(are)

None of these
to recognize the major constructs of the language and to call the appropriate action routines that will generate the intermediate form or matrix for these constructs.
to parse the source program into the basic elements or tokens of the language.
to build a literal table and an identifier table
to build a uniform symbol table

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