title: Round trip time (sliding window)?
body: <p>I have 2 questions:</p>
  
  <ol>
  <li><p>While calculating RTT, should we take transmission time into consideration or not?</p></li>
  <li><p>The distance between two stations M and N is L kilometers. All frames are K bits long. The propagation delay per kilometers is t seconds. Let T bits/sec be the channel capacity. Assuming that processing delay is negligible, what is the minimum number of bits for the sequence number field in a frame for maximum utilization, when the sliding window protocol is used?</p></li>
  </ol>