Module 2 of 6Lesson 2 of 2~14 min
Finding the server and securing the connection (DNS and HTTPS)
A domain migration or an expired certificate can make a product unreachable overnight. This lesson helps you understand how a domain name leads to the right server, read the most common DNS records and know what an HTTPS connection really protects, and what it does not.
Lesson objective
By the end of this lesson, you will be able to explain how a domain name is translated into an IP address, read the main DNS records and the effect of their TTL, and say what an HTTPS connection guarantees, and what it does not.
Topics covered
- DNS
- HTTPS
- domain name
- TLS certificate
- DNS records
Where it fits
From address to page
What happens between the moment you type an address and the moment the page appears?
Lessons in this module
- A request's journey, in six steps
- Finding the server and securing the connection (DNS and HTTPS) (this lesson)
What you will learn in this module
This lesson is part of the course Explain how a web product works, from browser to server
- Describe the steps of a web request, from the typed address to the displayed page (URL, DNS resolution, encrypted connection, HTTP request and response, browser rendering).
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