Under TCP/IP inter-networking :

  Application - HTTP, FTP, Telnet, etc.
 
  Transport - TCP layer

  Network - IP layer (Internet)

  Data-link  - Ethernet, or other hardware/software interfaces.
  Hardware

  * As a packet is sent from node to node across the Internet, progress is
  handled only at Network and Data-link layers except for source and 
  destination nodes.


Modified from Source http://en.wikipedia.org/wiki/File:IP_stack_connections.svg