Operating System (OS)
Which one is true for unconditional disk formatting?

All of above
Do not check/scan surface after format
Transfer system files after format
Destroys every byte of data on a disk by overwriting it with with blank spaces

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Operating System (OS)
The LRU algorithm

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

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