COMPUTER FUNDAMENTALS

Detailed explanation-1: -Since CPU registers are the fastest to read and write, they are placed at the top of the hierarchy. On the other hand, mass storage devices like optical drives and magnetic tapes are the slowest and largest and therefore occupy the last level in the pyramid.

Detailed explanation-2: -At the very top, the highest performing storage is CPU registers which are the fastest to read and write to. Next is cache memory followed by conventional DRAM memory, followed by disk storage with different levels of performance including SSD, optical and magnetic disk drives.

Detailed explanation-3: -Registers are the memory locations that the CPU can access directly. The registers contain operands or the instructions that the processor is currently accessing. Registers are the smallest data storage unit integrated into the CPU.

Detailed explanation-4: -Modern processors use either static or dynamic RAM as main memory, with the latter usually accessed via one or more cache levels. Processor registers are normally at the top of the memory hierarchy, and provide the fastest way to access data.

Detailed explanation-5: -These five hierarchies in a system’s memory are register, cache memory, main memory, magnetic disc, and magnetic tape.