Application Layer

DNS, HTTP, SMTP and FTP — what actually happens between typing a URL and seeing a page.

0 of 9 answered

• Not triedWhat does a DNS resolver ask first?Foundation
• Not triedWhat does DNS actually return?Foundation
• Not triedWhy a website has to keep reminding itself who you areFoundation
• Not triedWhen compressing a response is not worth itCore
• Not triedPolling, long polling, or a persistent connectionChallenge
• Not triedThe browser blocked a response the server sentChallenge
• Not triedThe retries that finished the outage offChallenge
• Not triedThe websocket that works locally and not in productionChallenge
• Not triedWhat to rate limit byChallenge