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Computers - General Knowledge Questions
In IT, the method for updating the main memory as soon as a word is removed from the cache is called
Write – back
Cache – write
Write – through
Protected – write

Correct Answer :   Write – back

The write-back method involves updating only the cache location and to mark it as updated with an associated flag bit, often called the dirty or modified bit. The main memory location of the word is updated later, when the block containing this marked word is to be removed from the cache to make room for a new block. The reason for the write back method is that during the time a word resides in the cache, it may be updated several times.

Published On : June 17, 2021