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4.1 Networks
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Presentation of 24 pages for the course ICT IGCSE at ICT IGCSE (4.1 Networks)
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ICT IGCSE Theory – Revision Presentation4.1 Networks
Chapter 4: Networks and the effects of using them
• Understand how a router works and its purpose
• Understand the use of other common network devices, including: network interface
cards, hubs, bridges, switches, modems
• Understand the use of WiFi and Bluetooth in networks
• Understand how to set up and configure a small network, including: access to the
internet, the use of a browser, the use of email, access to an ISP
• Understand the characteristics and purpose of common network environments, such
as intranets and the internet
• Understand the advantages and disadvantages of using different types of computer to
access the internet
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, ICT IGCSE Theory – Revision Presentation
4.1 Networks
Chapter 4: Networks and the effects of using them
Overview What is a Computer Network?
A network is two or more
Workstation computers, or other electronic
devices, connected together so
that they can exchange data.
For example a network allows:
• Computers to share files
Internet Router Switch • Users to message each other
• Share Resources
Network connections between
computers are typically created
Wireless using cables (wires) or via
Access Bridge wireless signals.
Point
Cables
Wireless
Switch
WWW.YAHMAD.CO.UK
, ICT IGCSE Theory – Revision Presentation
4.1 Networks
Chapter 4: Networks and the effects of using them
Overview
Advantages of using Networks
• Easily share files and data.
• Share resources such as printers and Internet connections.
• Communicate with other network users (e-mail, instant messaging,
video-conferencing, etc.)
• Store data centrally (using a file server) for ease of access and
back-up.
• Keep all of our settings centrally so we can use any workstation.
Disadvantages of using Networks
• Greater risk of hackers.
• Greater risk of viruses (spreading and disabling network).
• The significant cost of extra equipment.
• When the network is down computers can not be used as
standalone computers.
• Print queues can be long.
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