React-query quiz

Test your React-query knowledge with a free interactive quiz — 50 questions with answers and explanations. No signup needed to play.

`refetchInterval: 30_000` does what?

1. `refetchInterval: 30_000` does what?
2. What does `staleTime` control?
3. What is a "dependent query"?
4. After a successful `useMutation`, how do you keep dependent queries up to date?
5. How do you fire multiple queries in parallel?
6. A `useQuery` returns `error`. When is it populated?
7. How do you disable a query conditionally?
8. What does the React Query Devtools panel show?
9. Which loading flag tells you "the first request is in flight, no data yet"?
10. What is the role of `queryKey`?
11. You must wrap your app in:
12. Which hook fetches data?

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