Question : In IT, the method for updating the main memory as soon as a word is removed from the cache is called
Option 1: Write Through
Option 2: Write - back
Option 3: Protected: write
Option 4: Cache: write
Correct Answer: Write - back
Solution : The correct answer is Write-back.
Only when data is evicted from a write-back cache is it written to the main memory. By minimizing the number of writes to the main memory, performance can be improved. Nevertheless, if the cache is not flushed to the main memory before powering down or when the system crashes, it might result in data inconsistencies.
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