I'm not following your point here. Are you suggesting that someone has forfeit their right to learn something new N hours before an interview or test? If so, how many hours 12? 24? a week?
Not at all. Please note, you replaced "after" with "before" and "homework" with 'test", and changed the question entirely.
I object to anyone in the process of being tested trying to cheat to get a question answered here. They're being tested on how well they already know the answer, not how well they can crowdsource it.
I object to anyone having been assigned homework to try to get fundamentals sorted out here. They've been told in class how to read the docs: they shouldn't need to have the docs explained to them again or the answers given to them so they can parrot the answers into the homework.
-- Randal L. Schwartz, Perl hacker
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119.