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15Which locality principle states that if a data location is referenced then it will tend to be referenced again soon?

Question

Which locality principle states that if a data location is referenced then it will tend to be referenced again soon?

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Solution

The locality principle that states that if a data location is referenced then it will tend to be referenced again soon is known as Temporal Locality.

Here are the steps to understand this principle:

  1. Temporal Locality is a term used in computer science to describe a specific pattern of data access that is frequently observed in many applications.

  2. The principle of Temporal Locality states that if a data location is accessed, it is likely to be accessed again in the near future. This is often due to loops in program's code where certain instructions (and hence data) are repeatedly accessed.

  3. This principle is used in the design of many hardware and software systems, including the cache memory of CPUs. The cache stores recently accessed data and instructions so that if they are needed again soon, they can be quickly retrieved.

  4. Temporal locality is one of two types of locality of reference, the other being Spatial Locality, which states that if a data location is referenced, data locations with nearby addresses will tend to be referenced soon.

  5. Understanding these principles can help in optimizing the performance of computer systems.

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