IntermediateLesson 5 of 1425 min 路 hands-on
DNS Explained
Part of the Web course
You point a domain at a new server, the change goes in, and it works from your laptop and not from your colleague's. Or the site is down for half your users and fine for the rest, and nothing in your logs shows a single failed request, because the requests are not arriving.
Nothing on the internet routes on names. Before a connection can be made, www.example.com has to become an address, and DNS is the distributed directory that does the converting. ...
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Start this lessonDNS ExplainedWhat you'll learn
- Root
- TLD
- Authoritative server
- Recursive resolver
- A
- AAAA
- CNAME
- MX
- TXT
- TTL
- Dig
- /etc/hosts
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All lessons in this course
14 lessons- 1What Is The Web20 min
- 2HTTP vs HTTPS15 min
- 3Request and Response Anatomy30 min
- 4Cookies, Sessions, and Tokens25 min
- 5DNS Explained25 min
- 6TLS and Certificates30 min
- 7CORS30 min
- 8REST API Basics25 min
- 9WebSockets and SSE25 min
- 10Caching and CDNs25 min
- 11Security Headers25 min
- 12Rate Limiting and Throttling20 min
- 13Monitoring and Logging20 min
- 14Capstone: A Tiny Web Server40 min
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