This workbook completely covers the AQA GCSE Computer Science (8520) specification section 3.5 “Fundamentals of computer networks”. Includes a 43-page PDF document including theory, tasks and includes all the answers.


Ideal as a GCSE revision aid or as a teaching resource and includes lots of help with understanding the different types of network (PAN, LAN, WAN and WLAN), benefits and risks of wireless and wired networks, the star and bus topologies, common network protocols (Ethernet, Wi-Fi, TCP, UDP, IP, HTTP, HTTPS, FTP, SMTP and IMAP), network security including authentication, encryption, firewalls and MAC address filtering and the TCP/IP 4 layer model.


This book has been written to give you practical hands-on approach to help you learn the theory. Instead of chapters of technical jargon and mind-numbing tedium the theory is broken down into smaller, manageable chunks with practical tasks for you to perform as you go along. This helps you ensure you understand the theory and remember it as you apply it to practical problems.


This book was specifically written to assist students preparing for their AQA GCSE Computer Science examination (8520) and match the syllabus, as of February 2018.


Includes a single 43-page PDF document which can be given to the pupils to work through for homework tasks or in class.


Table of contents:

  • What is a network?
  • Servers
  • Advantages and disadvantages of computer networks
  • Types of network
  • Personal Area Network (PAN)
  • Local Area Network (LAN)
  • Wide Area Network (WAN)
  • Wireless Local Area Network (WLAN)
  • Bluetooth
  • Wi-Fi
  • Ethernet cable
  • Fibre Optic cable
  • Star network topology
  • Bus network topology
  • Network Protocols
  • How is data transmitted over a network?
  • Bandwidth
  • Common network protocols
  • Ethernet
  • Wi-Fi
  • TCP
  • UDP
  • IP
  • HTTP
  • FTP
  • Email protocols (SMMTP and IMAP)
  • Connecting to a network
  • Network Interface Card (NIC)
  • IP address
  • MAC address
  • Network security
  • Authentication
  • Encryption
  • Firewall
  • MAC address filtering
  • TCP/IP mode
  • The 4 layers of the TCP/IP model
  • Application layer
  • Transport layer
  • Internet layer
  • Link layer

AQA Computer Networks Workbook

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