Question-04: The designed constraints on a computer memory can be summed up by three questions: How much? How fast? How expensive? The processes are scheduled by the operating system that uses processing resources like CPU. These processes communicate with each other which is termed as inter-process communication process. As might be expected, there is a tradeoff among the three key characteristics of memory: namely, capacity, access time, and cost. A variety of technologies are used to implement memory systems. The way out of this dilemma is to not rely on a single memory component or technology, but to employ a memory hierarchy. This hierarchy was developed due to the different demands from different programmers. By considering the discussed scenario, answer following question parts. (02 + 02 = 04 Marks) (a) Describe memory hierarchy in detail by considering cache, register, main memory and auxiliary memory. (b) Explain the parameters on the basis of which the memory hierarchy was developed