1. KS3 COMPUTING
Networks
Lesson 1
Network Intro.
KS3 Computing
Networks

2. Lesson Aims 1 Understand what a network is and why they are used 2
Understand the two types of networks 3
Understand the three topologies used to connect networks 4
Understand the three types of media used to make networks

3. A network is two or more devices that are connected together
Introduction
What is a Network?
A network is two or more devices that are connected together
A device could be a desktop, laptop, tablet, smartphone and many others

4. Why would people want to make a network?
Advantages
Why would people want to make a network? 1
Share resources such as printers and other peripherals 2
Share an Internet connection 3
Allows users to hot-desk 4
Allows security, backups and updates to be centrally managed 5
Site software licenses can often be cheaper than invidious licenses

5. What are the drawbacks you need to be aware of?
Disadvantages
What are the drawbacks you need to be aware of? 1
Greater risk of malware spreading 2
Initial set up costs can be expensive 3
Employ a person or team of people to manage it 4
If the server breaks the whole network could come down

6. Watch the following video on networks
Link:

7. Types of Network
The geographical distance often determines what type of network is used
Local Area Network
Wide Area Network
There are also other types of network such as a PAN and VPN, but they are beyond the scope of this lesson

8. The topology is the layout/pattern of the way a network is connected
Network Topologies
The topology is the layout/pattern of the way a network is connected
Bus
Ring
Star

9. The media is the technology used to connect the network together
Network Media
The media is the technology used to connect the network together
Copper Cable
Fibre Optic Cable
Wireless

10. Activity Microsoft Publisher Page 1 Title page
Title, name, relevant image, what is a network
Page 2
Types of Network
Image of LAN and WAN, advantages and disadvantages of networks
Page 3
Network Topologies
Image of Bus, Ring and Star, one advantage and disadvantage of each
Page 4
Network Media
Image of copper, fibre optic and wireless, facts about each media
Use the example and help found in: Start / Computer / ICT / Mr Lyon / Networks

11. Write the answer to these questions in your book:
Networks 1: Assessment
Write the answer to these questions in your book: 1
What is the minimum amount of devices required to be a network? [1] 2
Name three objects that a device could be? [1] 3
Name two advantages of creating a network? [2] 4
Name two disadvantages of creating a network? [2] 5
What are the two types of network you need to know? [1] 6
What are the three types of topology you need to know? [1] 7
What are the three types of media you need to know? [1] 8
What type of network is the Internet the largest example of? [1]