# How does a website reach your screen?

Learner worksheet · noobquestions.com/teach/#web

Name: ____________________

Answer in your own words. A wrong guess is fine — it is where the lesson starts.

1. Before the lesson: list what you think happens between pressing Enter and seeing a page.

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2. What does a DNS lookup give your browser?

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3. True or false: once the DNS lookup succeeds, the page has already downloaded. Explain.

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4. In the pretend cache, you updated the original page but still saw version 1. Why?

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5. A lookalike website shows a padlock. What does HTTPS protect, and what does it not prove?

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6. Exit question: put these in order and explain each in one line — receive the page, find the address, protect the connection.

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Lessons:
- What is DNS? Follow a website name to its address: https://noobquestions.com/dns-explained-how-a-website-finds-its-address/
- Why is this page still old? Web caching explained: https://noobquestions.com/why-a-website-still-shows-an-old-page-cache-explained/
- What does HTTPS protect? A padlock is not a trust guarantee: https://noobquestions.com/https-explained-a-padlock-is-not-a-trust-guarantee/