Networking

A digital network is where two or more nodes are connected together

Pre-course material

Before learning about modern packet switched digital networks, watch Jeremy Clarkson's documentary on the development of the circuit switched telephone network - CLICK HERE

Networking #1 Introduction

#learning

What are digital networks and why do they exist?

Students understand:

  • definitions of a network and the x3 types of network (LAN, MAN and WAN).
  • the x2 network node relationship models (p2p and client server)
  • the advantages and drawbacks of networks
Protocols lesson

#learning

How can we create a protocol to send a simple message?

Students understand:

  • what a protocol is and how they can send a message between two people
  • how a protocol must be agreed between both sender and receiver to work
  • how to evaluation the effectiveness of ideas and improve upon them

Packet Switching inventor: Donald Davies

Network protocols and layers

#learning

How can we send data around the world?

Students understand:

  • what a protocol is and how they are useful
  • how a data packet is sent over a digital switched network
  • what protocols are used to send data packets and the differences between them
  • what the OSI layer model is and why it exists
Network performance

#learning

What effects the performance of a network?

Students understand:

  • that network performance can be affected
  • what affects performance
  • how to increase network performance
The Internet

#learning

What happens when we request a web page?

Students understand:

  • the protocols used in a web request
  • how a data packet is sent over a digital switched network
  • the journey of what happens when a link is clicked in a web browser
Network threats

#learning

What threats can be found on digital networks?

Students understand:

  • types of network threat that exist
  • types of counter measures
  • network policies and how they can protect a network


Example network policies

Resources

Revision

Other information sources

Quizlet - test your knowledge

NCCE

PDE 1 GCSE Networks and Cyber Security - Layered Models Session

Learning objectives

  • What is a layered approach to data communications?
  • What is a network protocol?
  • How can these concepts be taught at GCSE?


10:00-10:45
PDE 2 GCSE Networks and Cyber Security - TCPIP Part One Session

Learning objectives

  • TCP/IP
    • Layers
    • Encapsulation
    • Addressing
    • Protocols
  • Teaching this content


11:00-11:50
PDE 3 GCSE Networks and Cyber Security - TCPIP Part Two Session

Learning objectives

  • TCP/IP
    • Protocols
      • Layer 3 – TCP and UDP
      • Layer 2 – IP, RIP, ARP and DHCP
      • Layer 1 – Ethernet and others
    • Teaching this content


11:50-12:40
PDE 4 GCSE Networks and Cyber Security - Devices Session

Learning objectives

  • The hardware needed to connect stand-alone computers into a Local Area Network
  • Virtual networks
  • Packet switching and circuit switching
  • Client-server and peer-peer


13:20-14:50
PDE 5 GCSE Networks and Cyber Security - Addresses Session

Learning objectives

  • IP Addresses
    • Subnets
    • DNS
    • Default Gateway
  • MAC addresses
    • ARP
    • Structure


14:50-16:00
PDE 6 GCSE Networks and Cyber Security - Internet and Network Security Session

Learning objectives

  • How DNS enables discovery of resources online
  • Network Security
    • Network Address Translation
    • Firewalls
    • Filters
    • Attacks
  • Web protocols


9:30 - 10:20
PDE 7 GCSE Networks and Cyber Security - Security Session One

Learning objectives

  • Defining Cyber Security
  • Malware
  • Protecting Physical Assets
  • Protecting Software Assets


10:20 - 11:10
PDE 8 GCSE Networks and Cyber Security - Security Session Two

Learning objectives

  • Secure Software Design
  • Protecting technology and data
  • Social Engineering
  • Legal considerations


11:10 - 12:00
PDE 9 GCSE Networks and Cyber Security - Media and WiFi Session

Learning objectives

  • Wired and wireless.
    • Differing media and signals
    • Network data speeds
    • factors that affect the performance of networks
  • Wi-Fi
    • frequency
    • Channels
    • Encryption
    • Benefits and risks of wireless and wired networks.


13:00 - 14:00