Q. The method for updating the main memory as soon as a word is removed from the cache is called:
- write-back
- write-through
- cache-write
- protected write
Answer: write-back
Write back is a storage method in which data is written into the cache every time a change occurs, but is written into the corresponding location in main memory only at specified intervals or under certain conditions.
Write back is a storage method in which data is written into the cache every time a change occurs, but is written into the corresponding location in main memory only at specified intervals or under certain conditions.
Cache, the technique of storing a copy of data temporarily in rapidly-accessible storage media (also known as memory) local to the central processing unit (CPU) and separate from bulk storage, has been around for as long as computing itself.
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