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The Internet & Internet Security

AQA 75174.9.3A-levelLesson packSubscription
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Set it as homework or classwork and every answer is marked as pupils go, with feedback on what they got wrong. The scores go straight into your mark book, so you can see who needs help before the next lesson.

  • 12 questions
  • 40 marks
  • about 50 minutes
  • marked instantly

Question types: short answer, multiple choice, fill the gap, true or false, multi-part.

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About this resource

AQA A-level Computer Science (7517) Paper 2, 4.9.3 — the structure of the Internet, packet switching and the role of routers/gateways, how packets are built and routed, URLs/FQDNs/domain names and the Domain Name System, Internet registries, and Internet security: firewalls (packet filtering, pro…

31 slides.

Lesson outline

  1. Retrieval: Topologies & Wireless (from last lesson)
  2. Key Vocabulary
  3. The Internet: A Network of Networks
  4. Quick Check: What Is Packet Switching?
  5. A Packet's Journey Across the Internet
  6. Task: Order a Packet's Journey
  7. What's Actually Inside a Packet?
  8. TCP and UDP — Reliable vs Fast Delivery
  9. Router vs Gateway — and How Routing Is Achieved
  10. Hinge Question: Router or Gateway?
  11. URLs, FQDNs, Domain Names and IP Addresses
  12. How Domain Names Are Organised
Unit bundlePaper 2
Part of: Paper 2: the whole unitEvery resource in the unit in one zip.

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