title: Multi-level page tables - hierarchical paging
body: <p>Example question from a past operating system final, how do I calculate this kind of question?</p>
  
  <p>A computer has a 64-bit virtual address space and 2048-byte pages.  A page table entry takes 4 bytes. A multi-level page table is used because each table must be contained within a page.  How many levels are required?</p>
  
  <p>How would I calculate this? </p>