Free Names and the web lessonsNames and the web · Stage 2 · Security and the whole journey · Step 3
What happens when you type a URL
Put everything together: the whole journey from the address bar to a rendered page, and where the time goes. About 15 minutes.
Roughly how many network round trips does a cold HTTPS page load need before the first byte of the page arrives (DNS, TCP, TLS 1.3, HTTP)?
- AAbout four
- BOne
- CAbout ten
Show the answer
About four. One each for DNS, the TCP handshake, the TLS 1.3 handshake and the HTTP request.
4 questions on this idea
Short questions that apply the idea to new cases: trace it, work out a number, put steps in order. A wrong answer explains itself.
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