Operating System (OS)
In analyzing the compilation of PL/I program, the description "creation of more optimal matrix" is associated with

Machine independent optimization
Code generation
Syntax analysis
None of these
Assembly and output

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Operating System (OS)
A page fault

is an error is a specific page
occurs when a program accesses a page of memory
is an access to a page not currently in memory
None of these
is a reference to a page belonging to another program

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