Which memory component sits between main memory and the processor to speed access by caching data?

Which memory component sits between main memory and the processor to speed access by caching data?

• A. Cache
• B. RAM
• C. ROM
• D. Register

Answer: (A)

Cache memory is a fast storage layer that sits between the processor and main memory. It keeps copies of data and instructions that the CPU has recently used, so when the processor needs them again, it can fetch them from the cache much more quickly than from main memory. This reduces access latency and speeds up overall performance. RAM is main memory, which is larger but slower than the cache. ROM stores fixed, non-volatile data and isn’t used for regular data caching. Registers are tiny storage inside the CPU used for immediate operations, not a separate memory layer between the CPU and RAM.

Cache memory is a fast storage layer that sits between the processor and main memory. It keeps copies of data and instructions that the CPU has recently used, so when the processor needs them again, it can fetch them from the cache much more quickly than from main memory. This reduces access latency and speeds up overall performance. RAM is main memory, which is larger but slower than the cache. ROM stores fixed, non-volatile data and isn’t used for regular data caching. Registers are tiny storage inside the CPU used for immediate operations, not a separate memory layer between the CPU and RAM.