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Web Security Quiz Practice
Active Recall Drill Session
← Exit Session
Question 1 of 1
hard
Web Security
What's the purpose of the Vary: Origin response header when a server dynamically echoes back the requesting Origin?
A
It has no real functional purpose
B
It tells intermediate caches the response varies by Origin, preventing a cached response (with one origin's CORS headers) from being incorrectly served to a different origin
C
It's required syntax with no caching implication
D
It disables CORS entirely for that response
Check Answer