Quiz: redundancy

Question 2 of 9

One correct answer

With the sick copy 8082, every other answer was `500`, but with the stopped copy there were no failures at all. Why?

nginx removed the stopped copy from the upstream in the file right away.
A refused connection is in the default proxy_next_upstream, while a 500 answer is not.
systemd warned nginx that the service had stopped.
The sick copy answered more slowly, and clients did not wait for the answer.

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