Consider a logical address space of 256 Kilobytes and a physical address space of 4 Gigabytes. Assume that the page/frame size is 4 Kilobytes. I. a) How many bits are needed to specify a logical address? How many bits are needed to specify a physical address? (b) How many pages exist in the logical space? How many frames exist in the physical space? c) What is the size of Page Map Table? (number of PMT entries & size of each entry)