Layer 1: Theoretical Foundation

๐Ÿ“ 2.1 Types and methods of data transmission ๐ŸŽ“ Platform: IGCSE Computer Science

Data is broken into packets before being sent across a network. This topic covers packet structure โ€” header, payload and trailer โ€” and how packets are routed and reassembled at their destination. You will compare serial and parallel transmission, and simplex, half-duplex and full-duplex modes, along with the situations each one suits. Universal Serial Bus (USB) is studied as a practical example, including its benefits and its drawbacks.

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