Of course not. It's not a trivia question to see if you happen to know the term. Or a trivia question to see if you happen to remember some particular trick to

Of course not. It's not a trivia question to see if you happen to know the term. Or a trivia question to see if you happen to remember some particular trick to solve the problem. It's just an arbitrary task that will have you solve an easy problem that you probably have not done before, and write code for it. As such, the interviewer would obviously give the necessary background information. Either up front or when requested.