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📶 Networking & APIs: iOS interview questions

1. Data transfer protocols Junior PRO
2. HEAD, GET, POST, PUT Junior PRO
3. REST Junior PRO
4. Parsing, token, regular expressions Middle PRO
5. Socket Middle PRO
6. How does HTTP differ from HTTPS? Junior PRO
7. Sockets, TCP and UDP — when to use which? Middle PRO
8. How do you make a synchronous wrapper around an async method? Middle PRO
9. URLSession configuration types Middle PRO
10. Kinds of URLSessionTask Middle PRO
11. How do you cancel a request in URLSession? Middle PRO
12. What is WebSocket? URLSessionWebSocketTask Middle PRO
13. How do you design a networking layer on URLSession: endpoint, client, errors? Middle PRO
14. HTTP caching: Cache-Control, ETag and URLCache Middle PRO
15. Timeouts, retries and exponential backoff: how not to take the server down? Senior PRO
16. Access and refresh tokens: how does client-side auth work? Senior PRO
17. Polling, long polling, SSE or WebSocket: how do you get real-time data? Middle PRO