This document provides an overview of computer networking concepts including: 1. It outlines the history of computers and networking from ARPANET in 1969 to the development of the internet and technologies like TCP/IP and DNS. 2. It defines common networking terms like domain, download, upload, traceroute, ping, WAN, LAN, FTP, encapsulation, packet, router, TCP/IP, DNS, bandwidth, baud, KB, and Mbps. 3. It describes how networking works including communication protocols, layers, types of networks, routing, addressing, domains, and the communication stack.

1. 9 th Grade Computer Science Rotation Mr. Fedder/Mr. Crowley

6. History of Computers – Networking Arpanet - 1969

7. History of Computers – Networking Vinton Cerf Bob Kahn Tim Berners-Lee

8. Internet Timeline Mosaic Browser 1993 DarpaNet 1969 Berners-Lee 1989

9. Internet Connectivity - Growth 1991 1992 Jan. 1993 Feb. 1994 Nov. 1994 Jun. 1996 Jun. 1997

12. Networking – Domains http://www.friendscentral.org org org 65.61.134.112

13. Networking - Types

15. Networking – Routing Single Point of Failure

16. Networking – Routing

17. IP: 192.168.2.161 IP: 192.168.1.5 63.139.238.193 192.168.100.100 216.239.49.214 www.google.com 64.233.161.99 64.233.161.99 Name Server

18. Traceroute 192.168.100.100 63.139.238.193 216.239.49.214 64.233.161.99

23. Networking – Data Communication

24. Networking – Data Encapsulation Data: Network: Name, Address, Phone, Visa, 0231234490987111 Transport: TCP info Name, Address, Phone, Visa, 0231234490987111 TCP info Address Address Transmission Control Protocol Internet Protocol TCP info Name, Address, Phone, Visa, 0231234490987111 TCP info “ Segment” “ Packet” How Many Packets? What Order? Where did I come from? Where do I go?

26. Networking – Communication