Tech Savvy · lesson preview · 16 minutes
DNS: the internet’s address book
Understand resolver choices, encrypted DNS tradeoffs, and where filtering helps without pretending it blocks every threat.
What you’ll learn
This lesson includes guided content, one practical action, a way to verify it, a short knowledge check, and a checklist. Full content is available after course enrollment.
$30 one-time course · offered after Beginner is complete
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