1. Do it now – PAGE 11
You will find your do it now task in your workbook – look for the start button!
Wednesday, 21 November 2018

2. Client-server-model

3. Green pen activity
Complete the green pen activity in your booklet based on your teachers feedback.
Wednesday, 21 November 2018

4. Learning Objective “Investigate how the client-server model works”
You will find differentiated outcomes for this lesson on the front of your workbook.
Wednesday, 21 November 2018

5. Investigate how the client-server model works
New learning
A client/server network is a system where one or more computers called clients connect to a central computer named a server to share or use resources. Each client computer must use an operating system that allows it to be identified to participate in the network.
The Web, , file transfer, remote login (for example, Telnet), newsgroups, and many other popular applications adopt the client/server model. Since a client typically runs on one computer and the server runs on another computer, client/server Internet applications are, by definition, distributed applications. The client and the server interact with each other by communicating (that is, sending each other message) over the Internet.
Investigate how the client-server model works

6. Learning Development
This example demonstrates how a search engine uses the client / server model – the client (that’s you!) sends a query to google.com, this is sent to the server at Googles HQ in America and searches their databases. The result of the query is sent back to the server and then the response is sent to your computer via the internet.
Investigate how assistive technologies can be used to help people use computers

7. Learning Development STATIC Vs DYNAMIC websites Server side scripting
All websites use the client-server model in order for you to access them, however dynamic websites make much better use of this by using server side scripting to allow the user to access other data stored in databases – using a search engine is an example of a dynamic website that uses server side scripting.
Dynamic example:
Static example:
Investigate how the client-server model works

8. Investigate how the client-server model works
Talk Task
What is a client-server model?
Why do you think this is called a client server model?
What is a dynamic website?
How does this differ from a static website?
What kind of websites have you used that use this kind of technology?
Investigate how the client-server model works

9. Investigate how the client-server model works
Independent Task
Can you match up the term with its abbreviation and description. Some you should already know others you may need to use the internet!
Investigate how the client-server model works

10. Exit ticket What is the client – server model? R A G
Investigate how the client-server model works