title: Multi-level page tables Hierarchical paging
body: <p>Consider a virtual memory system with 32-bit virtual addresses and 1KB pages. Each page table entry requires 32-bits. It is desired to limit the page table size to one page.</p>
  
  <ol>
  <li>How many levels of page tables are required?</li>
  <li>Tables at two of the levels have 256 entries;tables at one level
  have 64 entries.(8+8+6=22). If the top level page table has 2^6
  entries then how many pages are possible?</li>
  <li>If middle level page table has 2^6 entries then how many pages are
  possible ?</li>
  <li>If bottom level page table has 2^6 entries then how many pages are
  possible ?</li>
  </ol>