Learning paths / The Internet
How the Internet Works
Follow a search from your screen to a server and back.
Six topics for class 6 to 8: what a search really does, home Wi-Fi, how names become numbers, how packets hop across the world, what the browser padlock means, and how cookies remember you.
Class 6 to 86 topicsbeginnerabout 1h 41m
0 of 6 topics complete0%
What you will be able to do
- Describe the request and response behind a web search
- Explain why humans type names but computers need numbers
- Trace a packet across several network hops
- Say why HTTPS matters for passwords and school logins
Topic sequence
Follow it in order. Each topic assumes the one before it.
01What Happens When You Search?beginnerClass 6 to 8A search looks instant, but your device sends a request, waits for answers, and shows a page built from many small pieces.15 min02Wi-Fi at HomebeginnerClass 6 to 8Your router is the doorway between home devices and the wider internet. Phones, laptops and consoles share that doorway.16 min03Names and DNSbeginnerClass 6 to 8animated labHumans remember names like school.edu. Computers prefer number addresses. DNS translates names into numbers.18 min04Packets and RoutingbeginnerClass 6 to 8animated labBig messages are split into small packets. Routers read addresses on each packet and forward them hop by hop.18 min05Websites and HTTPSbeginnerClass 6 to 8HTTP is how browsers ask for pages. HTTPS adds a lock so strangers on the path cannot read your packets easily.18 min06Cookies and RememberingbeginnerClass 6 to 8Websites can leave tiny notes on your device so they recognise you next visit. Helpful for logins, risky if you forget they exist.16 min
How this path closes
01
Project
Apply the whole sequence to one build.
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Assessment
Quizzes across every topic in the path.
03
Requirements met
Every topic complete and an average of at least 70% across the quizzes.
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How the Internet Works
Your CodexLab Path Certificate, issued the moment you qualify.
Finishing this path earns the How the Internet Works certificate, awarded by CodexLab. See the requirements and your progress.