Lecture Notes – Aug 28th

  • Internet – network of networks
  • Who invented the Internet?
  • TCP/IP (internet Protocol suite)
    • Switched vs switched-packet routing (OSI vs TCP/IP)
    • IETF, Internet Society
    • Connectionless protocol (e.g., Ethernet, IP, UDP, etc)
      • IP is not designed to be reliable and is a best effort delivery protocol
      • UDP provides data integrity via a checksum but does not guarantee delivery
    • Connection oriented protocol (TCP)
      • TCP provides both data integrity and delivery guarantee by retransmitting until the receiver acknowledges the reception of the packet