System Design · Junior · Question 66 of 75

Why should you test the app on a throttled slow network?

✓Correct answer: Many users have slow or unstable connections; developer machines and office Wi-Fi hide loading problems
2Throttling finds JavaScript syntax errors
3It's required for HTTPS

Explanation

DevTools network and CPU throttling reveal missing loading states, large bundles and slow LCP.

Further reading

web.dev: Lab and field data ↗

Test yourself

Take the System Design · Junior quiz: questions and options are shuffled, and you get a review of your mistakes at the end.