—·Computer Science · GCSE
Sent, Stolen, and Who Pays
Your message crosses half a dozen networks to arrive — what can go wrong on the way, and who is answerable for it? Wired against wireless, LAN against WAN, and topologies drawn from their own definitions so the figure counts its own links: five devices, five links or ten, which is the whole trade. Then protocols and layers, drawn as a stack, because the reason layering exists is that each layer uses only the one below it. Then the DfE's own split of attacks into technical weaknesses and behaviour, finding vulnerabilities as a separate job from fixing them, and protection across design, creation, testing and use. A band on the ethical, legal, environmental and privacy impacts, a worked attack-and-defence, twelve terms, and the misconceptions that cost marks.
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You have seen the whole sheet — nothing is held back. What you buy is the clean copy without the watermark, at full print resolution, ready to run off for every class in the department.
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- Referenced to the DfE GCSE subject content for computer science (updated 31 March 2025) and Ofqual's subject level conditions for qualifications examined from 2022 onwards (Ofqual/19/6472), quoted; no board's specification, mark scheme or past paper. The DfE names no attack and no topology, so neither is presented as common ground without saying which boards examine it
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