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Craig 'n' Dave

OCR GCSE (J277) SLR 1.3 – Computer networks, connections and protocols

This download provides you with a zip file which contains all the resources you will need to deliver this topic.

It includes:

  • Student Learning Record Workbook (for use by students)
  • Student Learning Record Answers (for use by teachers)
  • End of Topic test and answers
  • Lesson PowerPoint’s for every lesson
  • Any associated answers or references sheets for class activities

This topic covers:

1.3.1 Networks and topologies

  • Types of network:
  • LAN (Local Area Network)
  • WAN (Wide Area Network)
  • Factors that affect the performance of networks
  • The different roles of computers in a client-server and a peer-topeer network
  • The hardware needed to connect stand-alone computers into a Local Area Network:
  • Wireless access points
  • Routers
  • Switches
  • NIC (Network Interface Controller/Card)
  • Transmission media
  • The Internet as a worldwide collection of computer networks:
  • DNS (Domain Name Server)
  • Hosting
  • The Cloud
  • Web servers and clients
  • Star and Mesh network topologies

1.3.2 Wired and wireless networks, protocols and layers

  • Modes of connection:
  • Wired
  • Ethernet
  • Wireless
  • Wi-Fi
  • Bluetooth
  • Encryption
  • IP addressing and MAC addressing
  • Standards
  • Common protocols including:
  • TCP/IP (Transmission Control Protocol/Internet Protocol)
  • HTTP (Hyper Text Transfer Protocol)
  • HTTPS (Hyper Text Transfer Protocol Secure)
  • FTP (File Transfer Protocol)
  • POP (Post Office Protocol)
  • IMAP (Internet Message Access Protocol)
  • SMTP (Simple Mail Transfer Protocol)
  • The concept of layers



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