title: Internal and External memory fragmentation
body: <p>I am currently reading OS and read about internal and external memory fragmentation.</p>
  
  <p><strong>Internal fragmentation</strong> is based on fixed size partitioning. For example = paging is based on fixed size partitioning and hence, paging suffers from internal fragmentation.</p>
  
  <p>On the other hand, <strong>External fragmentation</strong> is based on variable size partitioning.
  For example = segmentation is based on dynamic variable size partitioning and hence, segmentation suffers from external fragmentation.</p>
  
  <p><strong>So, my doubt is there is internal fragmentation in paging, so it has 0 external fragmentation or there is something very small, so we can neglect that
  and<br>
  Similarly, for segmentation, does it also has 0 internal fragmentation or very small, that can be neglected?</strong></p>
  
  <p>Is my understanding right ?</p>