Unit 2 – Data Transmission
Title (38 characters): IGCSE CS 0478 Unit 2 Data Transmission
Description:
Complete IGCSE Computer Science 0478/0984 Unit 2 Data Transmission: 9 ready-to-teach lessons on packets, USB, error detection, ARQ and encryption.
Everything you need to teach Unit 2 of the Cambridge IGCSE Computer Science syllabus: how data is split into packets and sent, the methods and interfaces used to transmit it, how errors are detected and corrected, and how encryption keeps it secure. Each lesson is a fully editable PowerPoint that also works in Google Slides, with clean modern design and animated diagrams that play in both.
What’s included in every lesson
• Retrieval starter with answers
• Lesson objectives and key terms
• Teaching slides with worked examples and animated diagrams
• Three differentiated tasks: Recall (green), Apply (amber) and Explain (red), each with a full mark scheme
• Extension task and a confidence-rated plenary
Lessons

1. Packets and Packet Structure
2. Packet Switching
3. Data Transmission Methods
4. Universal Serial Bus (USB)
5. The Need for Error Checking
6. Error Detection Methods
7. Check Digits
8. Automatic Repeat Query (ARQ)
9. Symmetric and Asymmetric Encryption
   Ideal for Year 10 and Year 11 IGCSE classes, cover lessons and revision. Exam-style questions with mark schemes in every lesson support assessment for learning.