• Show understanding of why a protocol is essential for communication between computers
• Show understanding of how protocol implementation can be viewed as a stack, where each layer has its own functionality
• Show understanding of the TCP / IP protocol suite
  • Four Layers (Application, Transport, Internet, Link)
  • Purpose and function of each layer
  • Application when a message is sent from one host to another on the internet
• Show understanding of protocols (HTTP, FTP, POP3, IMAP, SMTP, BitTorrent) and their purposes
  • BitTorrent protocol provides peer-to-peer file sharing