Operating System (OS)
Link encryption

is used only to debug
is more secure than end-to-end encryption
can not be used in a public network
is less secure than end-to-end encryption
None of these

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Operating System (OS)
The LRU algorithm

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

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Operating System (OS)
Thrashing

always occurs on large computers
can always be avoided by swapping
None of these
can be caused by poor paging algorithms
is a natural consequence of virtual memory systems

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Operating System (OS)
Which, of the following, is true for testing and debugging?

Testing detects the syntax errors in the program while debugging corrects those errors in the program
None of these
All of these
Testing and debugging indicate the same thing
Testing checks for logical errors in the programs, while debugging is a process of correcting those errors in the program

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