Presentation is loading. Please wait.

Presentation is loading. Please wait.

Understanding the Internet I can describe different parts of the Internet. (yr 5) I can tell you the Internet services I need for different purposes. (yr.

Published byAldous Andrews Modified over 8 years ago

Similar presentations

Presentation on theme: "Understanding the Internet I can describe different parts of the Internet. (yr 5) I can tell you the Internet services I need for different purposes. (yr."— Presentation transcript:

1 Understanding the Internet I can describe different parts of the Internet. (yr 5) I can tell you the Internet services I need for different purposes. (yr 6) I can describe how information is transported on the Internet. (yr 6)

2 Based on: ‘What is the Internet? How does it work ?’, Helen Greer http://community.computingatschool.org.uk/resources/2114 Modelling the Internet, Barefoot Computing http://barefootcas.org.uk http://barefootcas.org.uk

3 What is the internet?

4 The internet is a vast network of computers and other devices connected together across the planet. The internet is the hardware.

5 http://www.youtube.com/watch?v=WwyJGzZmBe8 There and Back Again: A Packet's Tale - How does the Internet work?

6 Is that all that happens?

7 Web Server Client www.school.org.uk Web Page 1.

8 Type in a web address on client Client goes to web server Sends back web page Is that all that happens? 1.

9 No!

10 Web Server Client LAN /Home Router www.school.org.uk Web Page 2.

11 Type in a web address on client Client goes to Home router Home router goes to web server Sends back web page Is that all that happens? 2.

12 No!

13 Internet Service Provider (e.g. Talk Talk, BT, Sky) ISP Router Web Server Client LAN/Home Router Web Page www.school.org.uk 3.

14 Type in a web address on client Client goes to Home router Home router goes to ISP ISP goes to web server Brings back web page Is that all that happens? 3.

15 No!

16 Internet Service Provider (e.g. Talk Talk, BT, Sky) ISP Router Web Server Client LAN/Home Router Domain Name Server Web Page www.school.org.uk 79.110.49.10 4.

17 Type in a web address on client Client goes to Home router Home router goes to ISP ISP takes address to Domain name server DNS turns web address into IP address to go to correct web server Sends back web page Is that all that happens? 4.

18 No!

19 Internet Service Provider ISP Router Web Server Client LAN/Home Router Domain Name Server Web Page www.school.org.uk 79.110.49.10 WAN Router 5.

20 Type in a web address on client Client goes to Home router Home router goes to ISP ISP takes address to Domain name server DNS turns web address into IP address to go to correct web server Sends back web page from WAN router to WAN router to WAN router Is that all that happens? 5.

21 No!

22 Internet Service Provider ISP Router Web Server Client LAN/Home Router Domain Name Server www.school.org.uk 79.110.49.10 WAN Router Web Page Packets

23 Type in a web address Client goes to Home router Home router goes to ISP ISP takes address to Domain name server DNS turns web address into IP address to go to correct web server Splits web page into packets Brings back packets from WAN router to WAN router to WAN router Puts packets together Is that all that happens? 6.

24 No!

25 Internet Service Provider ISP Router Web Server Client LAN/Home Router Domain Name Server Web Page www.school.org.uk 79.110.49.10 WAN Router 7.

26 Type in a web address on client Client goes to Home router Home router goes to ISP ISP takes address to Domain name server DNS turns web address into IP address to go to correct web server Splits web page into packets Sends back packets from WAN router to WAN router to WAN router finding quickest route if one router isn’t working Puts packets together Is that all that happens? 7.

27 No! But we are getting close!

28 What are clients? Clients are computers setup to access services through the internet. For example, we use a client to view web pages, videos or read emails. Examples of clients include PCs, laptops, mobile phones, some TVs, games consoles and tablet devices. Client

29 What are routers? Routers are devices which help information get to where it needs to be across the internet. They route it. To help routers send the information to the correct location, all devices on the internet have an internet protocol (IP) address. Router

30 What are servers? Servers are computers setup to provide internet services, such as the world wide web, e-mail or online games. Some of these computers are web servers - they store information in web pages which is called the WWW. There are also domain name servers (DNS), which we’ll learn more about next. Serve r

31 What are DNS? Domain name servers (DNS) are a type of server which provide the IP address of the web server holding the website you want to view. For example, a DNS could provide the IP address for the server holding the www.barefootcas.org.uk webpage, which is 109.109.131.16. www.barefootcas.org.uk DNS

32 Match the description. Router ClientServer DNS Client A. A computer setup to provide services on the internet. B.A computer used to access services on the internet. C. A computer setup to provide the IP address of web servers holding web pages. D. A device used to route information to the correct place on the internet.

33 How can we create a model of the Internet? http://www.bbc.co.uk/guides/z3tbgk7#z9yk87h How will you represent a model of the Internet for your family to understand what happens?

34 Understanding the Internet I can describe different parts of the Internet. (yr 5) I can tell you the Internet services I need for different purposes. (yr 6) I can describe how information is transported on the Internet. (yr 6)

35 Find an IP address Router ClientServer DNS Client http://en.dnstools.ch/visual-traceroute.html http://www.yougetsignal.com/tools/visual-tracert/

36 Who controls the Internet? Fourteen Crypto officers or keyholders have a traditional metal key to a safety deposit box, which in turn contains a smartcard, which in turn activates a machine that creates a new master key. Four times a year a ceremony is held to ‘change the password to the Internet’ - the key which maintains the DNS address book. Seven back-up keyholders with smartcards that contain a fragment of code needed to build a replacement key-generating machine. Once a year, these shadow holders send the organisation that runs the system – the Internet Corporation for Assigned Names and Numbers (Icann) – a photograph of themselves with that day's newspaper and their key, to verify that all is well.Internet Corporation for Assigned Names and Numbers

37 Who controls your device? MIT Technology review

Download ppt "Understanding the Internet I can describe different parts of the Internet. (yr 5) I can tell you the Internet services I need for different purposes. (yr."

Similar presentations

The Internet and the World Wide Web. Una DooneyThe Internet and WWWSlide 2 What is the Internet? A collection of networks (LANS and WANS) around the world.

The Internet and the World Wide Web. Una DooneyThe Internet and WWWSlide 2 What is the Internet? A collection of networks (LANS and WANS) around the world.
Lecture 1 Internet Overview: roadmap 1.1 What is the Internet? 1.2 Network edge  end systems, access networks, links 1.3 Network core  network structure,

Lecture 1 Internet Overview: roadmap 1.1 What is the Internet? 1.2 Network edge  end systems, access networks, links 1.3 Network core  network structure,
Chapter 3.  The characteristics of: ◦ Local Area Networks ◦ Wide Area Networks ◦ Virtual Networks.

Chapter 3.  The characteristics of: ◦ Local Area Networks ◦ Wide Area Networks ◦ Virtual Networks.
The internet and the WWW

The internet and the WWW
Basic Network Training. Cable/DSL Modem The modem is the first link in the chain It is usually provided by the ISP and often has a coax cable connector.

Basic Network Training. Cable/DSL Modem The modem is the first link in the chain It is usually provided by the ISP and often has a coax cable connector.
Internet Review Academic Talent Search. All About Networking DevicesDevices Packet TransferPacket Transfer HardwareHardware SoftwareSoftware Wiring/CablingWiring/Cabling.

Internet Review Academic Talent Search. All About Networking DevicesDevices Packet TransferPacket Transfer HardwareHardware SoftwareSoftware Wiring/CablingWiring/Cabling.
NETWORKS – NETWORK FUNDAMENTALS. How do computers connect to each other? Wired vs. Wireless Network cards Special device on computer that lets the computer.

NETWORKS – NETWORK FUNDAMENTALS. How do computers connect to each other? Wired vs. Wireless Network cards Special device on computer that lets the computer.
Mr C Johnston ICT Teacher

Mr C Johnston ICT Teacher
? INTERNET WHAT, WHY, HOW. DEFINITION The Internet is a massive public spiderweb of computer connections. It connects personal computers, laptops, tablets,

? INTERNET WHAT, WHY, HOW. DEFINITION The Internet is a massive public spiderweb of computer connections. It connects personal computers, laptops, tablets,
The Internet’s Hardware Much of the hardware components that make up the Internet are owned or shared by thousands of private and public organizations.

The Internet’s Hardware Much of the hardware components that make up the Internet are owned or shared by thousands of private and public organizations.
Lecturer: Ghadah Aldehim

Lecturer: Ghadah Aldehim
Web Mastering Module Internet Fundamentals. What is the Internet? –Global network of networks –Communicating using same set of rules (protocols/languages)

Web Mastering Module Internet Fundamentals. What is the Internet? –Global network of networks –Communicating using same set of rules (protocols/languages)
Copyright © 2002 Pearson Education, Inc. Slide 3-1 CHAPTER 3 Created by, David Zolzer, Northwestern State University—Louisiana The Internet and World Wide.

Copyright © 2002 Pearson Education, Inc. Slide 3-1 CHAPTER 3 Created by, David Zolzer, Northwestern State University—Louisiana The Internet and World Wide.
IT 10103 Introduction to Information Technology. The Internet & World Wide Web Began in 1969 with the ARPANET (Advanced Research Project Agency Network)

IT Introduction to Information Technology. The Internet & World Wide Web Began in 1969 with the ARPANET (Advanced Research Project Agency Network)
CS101 Lecture 13 How the Internet Works When did the Internet start? The Internet was born in 1969 with the invention of ARPANET ARPANET was a research.

CS101 Lecture 13 How the Internet Works When did the Internet start? The Internet was born in 1969 with the invention of ARPANET ARPANET was a research.
How Does the Internet Work? Protocols Protocols are rules that describe how computers communicate and exchange data. The Internet has a series of these.

How Does the Internet Work? Protocols Protocols are rules that describe how computers communicate and exchange data. The Internet has a series of these.
The Internet The internet is simply a worldwide computer network that uses standardised communication protocols to transmit and exchange data.

The Internet The internet is simply a worldwide computer network that uses standardised communication protocols to transmit and exchange data.
Information Flow Across the Internet. What is the Internet? A large group of computers that link together to form the Worldwide Area Network (WAN)

Information Flow Across the Internet. What is the Internet? A large group of computers that link together to form the Worldwide Area Network (WAN)
IP BROS Presentation by: Amen Ahmed. Mario and Luigi are here to help us find our way through the internet. Mario will act as our browser and Luigi will.

IP BROS Presentation by: Amen Ahmed. Mario and Luigi are here to help us find our way through the internet. Mario will act as our browser and Luigi will.
Chapter 3.  LANs, WANs, Virtual networks  Advantages of a client-server network  Network components – describing their purpose and justifying their.

Chapter 3.  LANs, WANs, Virtual networks  Advantages of a client-server network  Network components – describing their purpose and justifying their.

Similar presentations

Ads by Google