Computer SystemsPart 2: Understanding The Internet

What is the Internet?wikipedia.org: “The Internet is a global system of interconnected

computer networks that interchange data by packet

switching using the standardized Internet Protocol Suite (TCP/IP). It

is a ‘network of networks’...”

Network of networks?

PC PC

PrinterPC

Switch &Firewall

The InternetWhy a cloud?

LAN

Switch &Firewall

LAN

Server

Packet Switching?

TCP/IP?

Internet Protocol (IP) is a system for addressing computers on the

InternetDomains (www.ichk.edu.hk) resolve into IP addresses (208.112.65.65)

Transmission Control Protocol (TCP) is a system for moving data

over the InternetTries to ensure that all data makes it from source to destination

Now Explain It BackGiven what you have learned, work together as a class to create a role play showing the

main features of the Internet.

Do you have any questions you need answering? If so, ask…

A Final Note

The Internet is NOT the WebCan anyone explain the difference?

Finally…Write a short piece (200-400 words)

explaining what the Internet is and how it functions.

LicensingAll original work used here is licensed under the Creative Commons Attribution-

Noncommercial-Share Alike 3.0 Hong Kong License. For more details please look http://creativecommons.org/licenses/by-nc-sa/3.0/hk/.

This license has been chosen to permit a high degree of sharing, whilst protecting the author’s control as to how the content is used.

Please respect this license and use accordingly!

Recycled and borrowed works from other sources are used under appropriate licenses, which are not affected by this license.

The original source is always given. All original work created by Ross Parker (International College Hong Kong), except where specified.

CreditsCircuit Board PhotoBy R. Butler on Flickr

Available under Creative Commons, BY-SA

Internet VisualisationBy Matt Britt on Wikipedia

Available under Creative Commons, BY