NIMCET 2021 — Computer PYQ
NIMCET | Computer | 2021The cache memory is more effective because of
Choose the correct answer:
- A. Memory localization
- B. Locality of reference(Correct Answer)
- C. Memory size
- D. None of the mentioned
Explanation
Cache memory is a small, high-speed storage mechanism positioned between the CPU and main memory (RAM). Its effectiveness relies almost entirely on an empirical program behavior known as the Locality of Reference.
Locality of reference states that computer programs tend to access a relatively small portion of their address space at any given local time window. There are two primary dimensions to this principle:
Temporal Locality (Locality in Time): If a specific memory location is referenced once, it is highly likely to be referenced again in the near future (e.g., variables used inside a loop or function).
Spatial Locality (Locality in Space): If a specific memory location is referenced, it is highly likely that nearby memory locations will be referenced soon after (e.g., traversing consecutive array elements or execution of sequential code instructions).
Explanation
Cache memory is a small, high-speed storage mechanism positioned between the CPU and main memory (RAM). Its effectiveness relies almost entirely on an empirical program behavior known as the Locality of Reference.
Locality of reference states that computer programs tend to access a relatively small portion of their address space at any given local time window. There are two primary dimensions to this principle:
Temporal Locality (Locality in Time): If a specific memory location is referenced once, it is highly likely to be referenced again in the near future (e.g., variables used inside a loop or function).
Spatial Locality (Locality in Space): If a specific memory location is referenced, it is highly likely that nearby memory locations will be referenced soon after (e.g., traversing consecutive array elements or execution of sequential code instructions).