Web Literacy Pack
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(a) Core skills checklist
- Read a URL like a map
- Know what the padlock does — and does not — mean
- Explain DNS in one sentence
- Decode common HTTP status families
- Spot a few response headers that matter
- Tell cookies apart from localStorage
- Separate browser cache from “the site is broken”
- Describe an ETag as a content fingerprint
- Say what a CDN is for
- Name one cross-site tracking idea
(b) Five practice drills
- Cache: fresh vs stale in DevTools
- Headers: read what the server sent
- Cookies: what travels with the request
- HTTPS: padlock literacy check
- ETag: fingerprint for “same content?”
(c) Cheatsheet
- One-page cheatsheet
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