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

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

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Operating System (OS)
All of the following are TRUE regarding virtual memory EXCEPT

Virtual memory is the physical space o the hard drive
This temporary storage is called the swap file or page file
Any amount of RAM can be allocated to virtual memory
The setting for the amount of hard disk drive space to allocate virtual memory can be manually change

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