Teacher Pack: Unit 1.3 Computer Networks, Connections and Protocols J277 (from 2020)
The resources within this Teacher Pack cover all aspects of the specification in relation to OCR GCSE Computer Science J277 (from 2020) component 1.3.
It includes:
· Teaching PowerPoint Presentations (including checkpoint questions and answers)
- Part 1 – Networks & Topologies (66 slides)
- Part 2 - Wired & Wireless Networks, Protocols & Layers (45 slides)
· Student PowerPoint Presentations (Including checkpoint questions, but omits the answers)
- Part 1 – Networks & Topologies
- Part 2 - Wired & Wireless Networks, Protocols & Layers
· Homework/Classwork Activities (+ mark schemes)
- LANS & WANS
- Wired & Wireless Networks
- Star & Mesh Topology
- Network Protocols
- The Concept of Layers
· End of unit tests (+ mark schemes)
- Test 1 - Networks & Topologies
- Test 2 - Wired & Wireless Networks, Protocols & Layers
Content Covered:
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-to-peer 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
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) o POP (Post Office Protocol)
- IMAP (Internet Message Access Protocol)
- SMTP (Simple Mail Transfer Protocol)
The concept of layers