Lecture Notes – Aug 28th

Internet – network of networks
Who invented the Internet?
- Vint Cerf & Bob Kahn
  - https://en.wikipedia.org/wiki/Robert_E._Kahn
  - https://en.wikipedia.org/wiki/Vint_Cerf
- Many, many others.
TCP/IP (internet Protocol suite)
- Switched vs switched-packet routing (OSI vs TCP/IP)
- IETF, Internet Society
  - RFCs
    - https://en.wikipedia.org/wiki/List_of_RFCs
- 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