No offense guys, but most of participiants of this mock interviews sounds like they have a check list of questions and prepared using first links from google
interviewee asking interviewer to skip this question on core API or callback API and the excuse is that the question is not important how unprofessional .
You asked about custom function probably which are defined on schema lets say getByName and he is explaining about find() what was that? If I'm right then his attention to detail is really bad based on previous response. No offense plz || Also on transactions question he looked like he was reading on screen lolz But anyways nice interview taken all the major points discussed