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Frontend · Mid-level · Theory

A request from the frontend fails with a CORS error, but the same request works from Postman. Explain what's going on and how to fix it.

~4 min by voice

How to approach it

They're checking whether the candidate understands that CORS is a browser's protective mechanism, not a server's, can diagnose a simple request versus a preflight, and knows that the right fix is correct headers on the server, not workarounds on the client.

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corsnetwork
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Answer by voice

The interviewer will ask this question and listen. Think out loud and ask for a hint if you need one. When you're done, pause or tap “That's my answer”. In about a minute, your score and the points you covered show up here.

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Best with headphones · ~4 min