Task Summary
You will learn about some of the major components that form the internet and there role in data transfer
How you will be assessed
In this section you can review your knoledge in a short Kahoot quiz. there will be an end of section multiple choice test.
Activities
Components of the Internet
Recap Kahoot Quiz: Teacher - Click Here (see supporting docs for this lesson for log in details)
Students - log onto www.kahoot.it and enter the code the teacher has projected on the board.
Task: The website www.howstuffworks.com is produced by a company in America and is saved on a host server based in Atlanta
in America. Type www.howstuffworks.com in to your browser then using your stopwatch (on your phone, watch or tablet) time how long it takes from pressing Enter until the page is loaded. (This should be about 1 second).
The website you have just loaded is saved on a computer in Atlanta in America, now look on the map to find where Atlanta is located in America.
Task: Draw an illustration of how the data is travelling from your computer in this classroom, to the server hosting the website www.howstuffworks.com and how the requested website data might travel back to your computer. You drawing should include the following components.
Optical Cable
Hub
Switch
Server
ISP
Your computer
Where you type the URL
The website host computer
And other component that you can think of
Your drawing should also show, which part is a LAN and which part is a WAN, Which part is the internet and which part is the World Wide Web. If you are stuck then watch the video from week 1s lesson.
Homework:
Recap Kahoot Quiz: Teacher - Click Here (see supporting docs for this lesson for log in details)
Students - log onto www.kahoot.it and enter the code the teacher has projected on the board.
Task: The website www.howstuffworks.com is produced by a company in America and is saved on a host server based in Atlanta
in America. Type www.howstuffworks.com in to your browser then using your stopwatch (on your phone, watch or tablet) time how long it takes from pressing Enter until the page is loaded. (This should be about 1 second).
The website you have just loaded is saved on a computer in Atlanta in America, now look on the map to find where Atlanta is located in America.
Task: Draw an illustration of how the data is travelling from your computer in this classroom, to the server hosting the website www.howstuffworks.com and how the requested website data might travel back to your computer. You drawing should include the following components.
Optical Cable
Hub
Switch
Server
ISP
Your computer
Where you type the URL
The website host computer
And other component that you can think of
Your drawing should also show, which part is a LAN and which part is a WAN, Which part is the internet and which part is the World Wide Web. If you are stuck then watch the video from week 1s lesson.
Homework:
- Finish your Drawing and upload to your Dashboard page.
- Make sure your Dashboard eportfolio is shared public so your teacher can view and mark it.
- And, revise ready for the test next week. (Check the learning outcomes attachment on lesson 2).
Test Time
Time to test you knowledge of Networks, how the internet works. See below for a brief summary.
Time to test you knowledge of Networks, how the internet works. See below for a brief summary.
Extended tasks and further reading and revision
BBC Bitesize
Network Types and Topologies: GCSE Level - Revision - http://www.bbc.co.uk/education/guides/z36nb9q/revision
The Internet: GCSE Level - Revision - http://www.bbc.co.uk/education/guides/zbtsgk7/revision
Test yourself
Network Types and Topologies: GCSE Level - Quick Multiple Choice Test - http://www.bbc.co.uk/education/guides/z36nb9q/test
The Internet: GCSE Level - Quick Multiple Choice Test - http://www.bbc.co.uk/education/guides/zbtsgk7/test
BBC Bitesize
Network Types and Topologies: GCSE Level - Revision - http://www.bbc.co.uk/education/guides/z36nb9q/revision
The Internet: GCSE Level - Revision - http://www.bbc.co.uk/education/guides/zbtsgk7/revision
Test yourself
Network Types and Topologies: GCSE Level - Quick Multiple Choice Test - http://www.bbc.co.uk/education/guides/z36nb9q/test
The Internet: GCSE Level - Quick Multiple Choice Test - http://www.bbc.co.uk/education/guides/zbtsgk7/test
Quick revision Notes
LANs and WANs
There are two main types of network:
- Local Area Network (LAN)
- Wide Area Network (WAN)
WAN: A WAN covers a large geographical area. Most WANs are made from several LANs connected together.
The internet is a WAN.
A school network is usually a LAN.
LANs are often connected to WANs, for example a school network could be connected to the internet.
World Wide Web
The World Wide Web (WWW or 'web' for short) is the part of the internet that you can access using a web browser such as Internet Explorer or Firefox. Web pages are mainly written in HTML language (Hypertext Markup Language)
Accessing web pages - You can access a website or web page by typing its URL (Uniform Resource Locator) into the address bar of your browser. An example of a URL is http://www.bbc.co.uk.
Internet Service Providers - ISPs provide access to the internet.
Data transfer
Data traveling on the internet travels through cables. Over long distances Fibre Optic cables are used.
Data only travels a short distance when you are connected wireless, after the short distance traveled the data reaches the sender/receiver unit, the data then runs through cables.
What is a server
A server is like a big computer that is used to control all the other computers on the network. It allows files and external devices such as printers to be shared, it manages user accounts and logins and in many cases manages the LANs connection to the internet.
Hubs and Switches
Hubs and switches allow components of a network to plug in together. A hub simply creates the connection and allows the data to pass through. A switch allows the connection and manages the data that travels through, the switch forwards the data to the correct place.