Computer Networks and Protocols — GCSE Computer Science Worksheet (AQA 8525)

A complete, no-prep, single-topic worksheet on computer networks and protocols for GCSE Computer Science, mapped to AQA 8525 (3.5 Fundamentals of computer networks). Students learn the three types of network (PAN, LAN, WAN), star and bus topologies, wired vs wireless connections, the purpose of common protocols (Ethernet, Wi-Fi, TCP, UDP, IP, HTTP, HTTPS, FTP, SMTP, IMAP) and the four layers of the TCP/IP model, then answer four exam-style questions, including the classic traps: a WAN is not just a big LAN, and the exam asks for the purpose of each protocol, not just its name. Includes an extension page (designing a school network, tracing a packet through the TCP/IP layers, why HTTPS matters, and client-server vs peer-to-peer) plus a full answer key with mark schemes, so marking takes minutes or students can self-mark. Print pages 2–3 for the class. 30–40 minutes, no equipment needed. Ideal for a cover lesson, homework, or targeted revision of computer networks.