title: Lost Packets And Duplicate Packets Scenario in Three way Hand-shaking
body: <p>In the process of 3 way hand-shaking between a client and a server, what will happen in the following scenarios? Thanks.</p>
  
  <p>Lost (control) packets:</p>
  
  <ol>
  <li>What happen if SYN lost?  client vs. server actions</li>
  <li>What happen if SYN+ACK lost? client vs. server actions</li>
  <li>What happen if ACK  lost? client vs. server actions</li>
  </ol>
  
  <p>Duplicate (control) packets:</p>
  
  <ol start="4">
  <li>What does server do if duplicate SYN received?</li>
  <li>What does client do if duplicate SYN+ACK received?</li>
  <li>What does server do if duplicate ACK received?</li>
  </ol>