title: Virtual address space size vs physical address space size
body: <p>In this picture, the virtual address space is larger than the physical address space. Is it possible for it to be the other way around? How would that work because how would the virtual address space have enough room to reference everything in the physical address space if it's smaller?</p>
  
  <p><img src="https://i.stack.imgur.com/7eQGx.png" alt=""></p>