(a) Describe what virtual memory is and explain its impact on multiprogramming (b) Describe what hierarchical (a.k.a. multilevel) and inverted page tables are and explain their advantages over a single-level page table. (c) Assume that a computer uses 32-bit virtual addresses, byte-level addressing and 4KB pages i. Determine the maximum size of the virtual address space per process. ii. Compute the number of entries in the single-level page table. iii. Describe an architecture for a two-level page table for this computer. (a) Describe what virtual memory is and explain its impact on multiprogramming (b) Describe what hierarchical (a.k.a. multilevel) and inverted page tables are and explain their advantages over a single-level page table. (c) Assume that a computer uses 32-bit virtual addresses, byte-level addressing and 4KB pages i. Determine the maximum size of the virtual address space per process. ii. Compute the number of entries in the single-level page table. iii. Describe an architecture for a two-level page table for this computer