Cambridge IGCSE 0984-0478 – 2. Data Transmission CAMBRIDGE IGCSE Topic 2.1 Packets and packet structure CAMBRIDGE IGCSE Topic 2.1 Packet switching CAMBRIDGE IGCSE Topic 2.1 Data transmission methods CAMBRIDGE IGCSE Topic 2.1 Universal Serial Bus (USB) CAMBRIDGE IGCSE Topic 2.2 The need for error checking CAMBRIDGE IGCSE Topic 2.2 Error detection methods CAMBRIDGE IGCSE Topic 2.2 Check digits CAMBRIDGE IGCSE Topic 2.2 Automatic repeat query (ARQ) CAMBRIDGE IGCSE Topic 2.3 Symmetric and asymmetric encryption Also in this topic... Cambridge IGCSE 0984-0478 – 1. Data Representation Cambridge IGCSE 0984-0478 – 3. Hardware Cambridge IGCSE 0984-0478 – 4. Software Cambridge IGCSE 0984-0478 – 6. Automated and emerging technologies Cambridge IGCSE 0984-0478 – 9. Databases