Operating system need complete and proper Answer

[20 points, 5 points each question] Consider a 32 -bit computer with the following virtual memory architecture: - Each page is 2KB ( 211 bytes). - Physical memory is 32GB(235 bytes). Note: that is not mean 232 bytes. - Associated with each virtual page are 7 bits in the page table, including control and reserved bits. The exact nature of these bits is unimportant for this question. For completeness, they are: three bits controlled by the kernel (PTE_P, PTE_U, and PTE_W); 2 bits controlled by the hardware (Accessed and Dirty); and 2 bits reserved for the kernel (for example, PTE_COW). - The machine has a two-level page table structure analogous to the one used in JOS: each process has a page directory, each entry of which points to a page table. Each entry in the page directory has the same number of control and reserved bits as a page table entry: (1) What is the minimum number of bits in a second-level page table entry, and explain briefly. (2) What is the minimum number of bits in a page directory entry, and explain briefly