Multiple choice

Dirty bit is used to show

  1. page with corrupted data

  2. wrong page in memory

  3. page modified after being loaded in cache memory

  4. page that is less frequently accessed
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A dirty bit is a flag associated with a block of memory (like a page) that indicates whether the data has been modified since it was loaded into memory. If the bit is set, the page must be written back to disk before being replaced.

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