title: hop to hop communication
body: <p>If we are in the same network, then hop to hop communication takes place by layer-2 devices such as switches, bridges, <em>etc.</em> that work at the MAC layer.</p>
  
  <p>But if we have to send packets to a destination in some other network then hop to hop communication takes place through routers.</p>
  
  <p>Is this correct?</p>