1. 9 thGrade Computer Science Rotation Mr. Fedder/Mr. Crowley

2. Networking

History of Computers

Computer Architecture

• Hardware & Networking

• Software

3. Networking

History

How networking works

• Layers

• Communication Protocols

• DNS

• Tools

Internet Growth

4. Networking:Terms

• Domain

• Download

• Upload

• traceroute

• ping

• WAN/LAN

• FTP

• Encapsulation

• Packet

• Router

• TCP/IP

• DNS

• Bandwidth

• Baud

• KB

• Mbps

5. History of Networking

• 1994 -Timemagazine: It was not designed for doing commerce, and it does not gracefully accommodate new arrivals.

• 1995 Newsweek : BAH! baloney.

THE INTERNET? 6. Internet Timeline DarpaNet Berners-Lee Mosaic Browser 7. Internet Connectivity - Growth 1991 1992 Jan. 1993 Feb. 1994 Nov. 1994 Jun. 1996 Jun. 1997 8. Networking - Addressing

URL

http://www.friendscentral.org/default.asp [email_address]

E-Mail

File Name Server Name Service Name Mailbox Name Domain Name Top-Level Domain Top-Level Domain Domain Name 9. Networking Domains

Domain Hierarchy

10. Networking Domains http://www.friendscentral.org org org 65.61.134.112 11. Networking - Types 12. Networking - Internet

Network of Networks

1 2 3 5 4 13. Networking Routing Single Point of Failure 14. Networking Routing 15. 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 16. Traceroute 192.168.100.100 63.139.238.193 216.239.49.214 64.233.161.99 17. Networking Communication Stack

Open Systems Interconnection

18. Networking Communication Stack (cont.)

Open Systems Interconnection

19. Networking Hardware

Network Interface Card (NIC)

20. Networking Data Communication 21. Networking Communication Stack Data: Network: Name, Address, Phone, Visa, 0231234490987111 Transport: TCP info Name, Address, Phone, Visa, 0231234490987111 TCP info Address Address

DataEncapsulation

TCP info Name, Address, Phone, Visa, 0231234490987111 TCP info Segment Packet How Many Packets? What Order? Who am I? Where do Igo? 22. Networking Communication Stack

DataEncapsulation

Address Hub TCP info TCP info Address DATA TCP info TCP info Address Address DATA DATA Router Router Internet Segment TCP info TCP info Address Address DATA Packet Hub 23. Networking Communication