4. A computer has 32 Kbytes of virtual memory and 8 Kbytes of main memory with a page size of 512 bytes. A. How many bits are in the virtual address? B. How many pages are in virtual memory? C. How many bits are required for the physical address? D. How many frames or blocks are in main memory? 5. A computer with 256 MB of virtual memory, 4MB of main memory, and 8KB of cache memory. Assume a page size of 2KB. a. What is the size of a virtual address? b. What is the size of a physical address? c. How many pages are in virtual memory? d. How many blocks are in main memory? e. What is the size of the Page Table? (Include the number of locations and the total size of each location including all information)