title: Go Back N Vs. Selective Repeat
body: <p>Are there any reasons why Go Back N would be preferred over selective repeat for pipelined error recovery ?</p>
  
  <p>Clearly, SR needs a buffer (appropriately sized) at the receiver's end, is that its only weakness ?</p>
  
  <p>Any situation where GBN would be exclusively preffered?</p>