Exam 350-901 topic 1 question 79 discussion

D is correct. no-cache: The no-cache request directive asks caches to validate the response with the origin server before reuse. must-revalidate: The must-revalidate response directive indicates that the response can be stored in caches and can be reused while fresh. If the response becomes stale, it must be validated with the origin server before reuse. no-store: The no-store response directive indicates that any caches of any kind (private or shared) should not store this response. From --> https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control

I'll go with A also.

D eliminates cache functions

I will go A. Question said that "Without removing HTTP cache controls", D is removing the Cache Control. The only way to do this is add the if-None-Match header and let the client compare whether the current cache is updated or not.

D is the best answer, But IMO there is no correct answer here because D is effectively disabling caching by no-store option. C is good, but again incorrect, because with Expires, the server has to set a validator i.e. Last-Modified or ETag header which haven't been set here. B is not incorrect, but it just a dumb workaround. A is a good option, but again incomplete because it's up to the client to run a conditional request. D works with our w/o client-side config, so I'd go with D.

Answer: D is correct.

D 101%

I think the right answer is "C", the question says that we can't remove HTTP cache control.

D is correct

I do think D is correct, but why not A? looks like there are 2 possible answers.