Question

What are the storage hierarchy? Which is the fastest memory in a computer system? Which is faster, cache or ragister and why?

Answer 1

Central processing unit registers are at the top and fast cache memory is there between the CPU and main memory.

The hard disk is used by the technique of virtual memory to expand the capacity of main memory. in computer language this kind of hierarchy is known as the memory hierarchy. This is applied to get larger memory space at low cost.

Cache memory is extremely fast memory that is built into a CPU.

The CPU uses cache memory to store instructions that are repeatedly required to run programs, improving overall systems speed.