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

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

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Operating System (OS)
Which of the following statement is true.

Seek analysis is used for analysing control-unit busy problems.
Thrashing is a natural consequence of virtual memory systems.
The LRU algorithm pages out pages that have been used recently
None of these
All of these

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Operating System (OS)
The LRU algorithm

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
pages out pages that have been used recently
None of these

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