Browser & Web Performance · Junior · Question 54 of 75

What is CORS?

1A browser feature that blocks all cross-origin requests
✓Correct answer: A mechanism that lets a server tell the browser which other origins may read its responses
3A server firewall rule

Explanation

CORS relaxes the same-origin policy in a controlled way, using response headers like Access-Control-Allow-Origin.

Further reading

MDN: CORS ↗

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