I understand that the motive behind those interview questions is for the hirer to gage understanding of the world of web development. However, I haven't used Agile or Waterfall. I don't want to invest too much of my time in learning every framework that comes in and out of fashion. I can do my best to gloss over what each seeks to do. In the case an interviewer asks me a similar question, how should I best prepare with these parameters in mind?