Which of the following medium is used between CPU & RAM to speed up the processing power of a CPU?
Verified Answer
A. (a) Virtual Memory
B. (b) DRAM
C. (c) Flash Memory
D. (d) Cache Memory
Explanation:
Option (d) Cache Memory is the correct answer. Cache memory acts as a small, very fast buffer between the CPU and main RAM. It stores copies of data from frequently used main memory locations, allowing the CPU to access this data much faster than directly from RAM, thereby speeding up processing. Option (a) Virtual Memory uses hard disk space as an extension of RAM, which is significantly slower. Option (b) DRAM (Dynamic RAM) is the main RAM itself, and cache is *between* the CPU and DRAM. Option (c) Flash Memory is non-volatile storage, much slower than RAM or cache, and not used for this purpose.