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

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

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Operating System (OS)
Seeks analysis

is used for analyzing device busy problems
is used for analyzing paging problems
is used for analyzing control-unit busy problems
is only shown on real-time displays
None of these

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Operating System (OS)
Which of the following is not true about documentation?

All of these
Documentation gives better understanding of the problem
None of these
Documentation increases the maintenance time and cost
Documentation, of a system, should be as clear and direct as possible

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Operating System (OS)
The disadvantages of "Compile and Go" loading scheme is (are):

it is very difficult to handle multiple segments, especially if the source programs are in different languages, and to produce orderly modular programs.
None of these
a portion of memory is wasted because the core occupied by the assembler is unavailable to the object program.
All of these
it is necessary to retranslate the user's program deck every time it is run.

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