Given the choice between evicting a dirty page or a clean page from physical memory, which one should you choose and why?

Question

Accepted Answer

Choose the clean page, because dirty pages first have to be written back to disk whereas a clean page can simply be written over in physical memory as there is an up-to-date copy of it already on disk.

Answer

Choose the dirty page, because clean pages first have to be written back to disk whereas a dirty page can simply be written over in physical memory as there is an up-to-date copy of it already on disk.

Answer

Choose the dirty page, because a clean page is more likely to be used in the future than the dirty page.

Answer

Choose the clean page, because dirty pages first have to be sanitized to ensure they do not contain malicious code that can corrupt the disk before they can be written to the disk.

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Given the choice between evicting a dirty page or a clean page from physical mem...

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