Currently, our "self-study" closure reason reads:
Self-study questions (including textbook exercises, old exam papers, and homework) that seek to understand the concepts are welcome, but those that demand a solution need to indicate clearly at what step help or advice are needed. For help writing a good self-study question, please visit the meta pages.
It seems to me like we are getting an increasing number of questions that originate from job interview questions.
I would say we should treat them just like self study questions (request that the tag be added, show work instead of only asking for the answer etc.).
If the community agrees, I would also ask that we include "interview" explicitly in the closure reason, i.e., modify the parenthetical expression to
(including textbook exercises, old exam papers, homework, and interview questions)
and then also include this in the tag wiki excerpt.