7. Virtual Memory (10 points) Assume an architecture allows each of its processes to divided in pages of size IKB. However, there are only 512MB of physical memory available. Also note that multiple programs may be in use at once process maintains its own page table, which is stored in memory, and every virtual page is in use. Show all calculations whenever needed. access IGB of virtual memory (o) (3 points) List two advatages of wsing virtual memory. Explain the purpose of using a page table. (b) (2 points) What is a page fault? How is it handled? (e) (5 points) How many bits are neded for each of the following i. Complete virtual address? ii. Complete physical address? ii. Page offset? iv. Virtual page number (VPN)? v. Physical page number (PPN)