1. Introduction to computer networks
Term1
Introduction to computer networks

2. How two friends can communicate with each other nowadays?

3. Network

4. Describe how networks are used in real life (home, school, work)
Lesson1 Objectives:
Describe how networks are used in real life (home, school, work)
Define the mean of computer network
Discuss advantages and disadvantages of computer networks.
Use real life scenarios.
Understand types of computer networks
Discuss network topologies

5. What is a Network?
A network is a group of interconnected things. You have seen a lot of networks in real life (Road Network – Rail network)

6. Activity 1 – Page 12

7. What is a Computer Network?
A computer network is a group of computers and other devices that are connected using cables or radio signals.

9. Class Activity
In groups,, Create a poster displaying Advantages and drawbacks of computer networks ?
Benefits
Drawbacks
Easy to communicate
No work done if the network goes down
Can work from anywhere
Hacking
Easy to share information
Network devices
Easy to share resources
Easier for viruses to spread
Cheaper computer programs
Easy to manage computers
Easier to backup files

10. Activity 2 – Page 16 Case Study One person can view Slower in delivery
Can be affected by virus
Data can be lost
Can be shared by all followers
Fast to upload and share

11. LAN – Local Area Network
Types of Computer Networks
LAN – Local Area Network
Internet
WAN – Wide Area Network

12. LAN (Local Area Network):
A local area networks (LAN) are small computer network in a small area. The area can be a house, school or a building

13. WAN (Wide Area Network):
Bigger networks that connect LANs and cover bigger areas such as an Emirate or the whole UAE are called wide area networks, WANs.

14. Internet
The Internet is a global network connecting computers around the world. Used for :
Searching
Massaging
Playing games
Watching videos

15. Activity 3 & 4– Pages
Identify type of networks?

16. Introduction to Cisco Packet Tracer
Cisco Packet Tracer is a program which will help you to make networks on a computers.

17. Network Topology
Network Topology is a map of how devices are connected in a network

18. Network Topology This unit, you will learn about 3 network topologies:
Star Topology
Ring Topology
Bus Topology

19. Star Topology
In a Star Topology is the computers and switch are connected in a star shape.

20. Ring Topology
In a Ring Topology computers are connected in a ring shape.

21. Bus Topology
In a Bus Topology computers are connected to one long cable called a bus.

22. Activity 5– Pages 33