💻 Full-Stack Engineer Assessment

Frontend, backend, databases, deployment & architecture

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Question 1 of 100/10 answered

Frontend· Scenario-based

Q1.In a React application, you fetch user data on every route change with useEffect. Users experience a flash of loading state on every navigation. What is the BEST way to eliminate this?

Remove the loading state entirely — it confuses users

Use a data-fetching library (React Query, SWR) that caches responses — subsequent navigations show cached data instantly while revalidating in the background

Increase the fetch timeout so loading takes longer but is more reliable

Move all data fetching to componentDidMount in class components

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