Describe two key differences between write-through and write-back policy. Descri

Question

Describe two key differences between write-through and write-back policy. Describe two key differences between write-through and write-back policy. Describe two key differences between write-through and write-back policy. Describe two key differences between write-through and write-back policy. Describe two key differences between write-through and write-back policy. Describe two key differences between write-through and write-back policy. Describe two key differences between write-through and write-back policy.

Explanation / Answer

For a clear undersanding about on this,

cache is a one type of auxilary memory to get the instruction faster for the faster processing(better performance).The instructions are stored in the cpu level cache layers.

Today there is a wide range of caching options available – write-through, write-around and write-back cache, plus a number of products built around these – and the array of options makes it daunting to know which to plump for to achieve the best benefit.

Write through, is a storage method in which data is written into the cache and the corresponding main memory location at the same time. The cached data allows for fast retrieval on required time, while the same data in main memory ensures that nothing will get lost if a crash, power failure, or other system failures occurs.

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.

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