Thank you for the interesting question.
As a consultant you should demostrate how you can break down the problem of a client into smaller pieces. It comes with practice, just to make sure you feel confident during the interview you can deep dive into different industries beforehand.
I suggest the following tools to prepare for an industry:
- Try to solve the case in that industry and break down the drivers of the business based on your business judgement
- Check out the structure in a case book/with your partner and understand what was wrong and ways for your structure improvements
- Read articles on WSJ, the Economist etc. regarding that industry
- Find and read research papers in an industry of inerest with google scholar
- Solve the case again
NB: When you do 3 and 4 structure all your thoughts and put them on a slide. I attach the slide my mentees did as an example.
NB: There is a very cool game, which is called CONSULTING BINGO. Cross the industries, for which you already practiced cases and compete with friends (exampke attached).
I hope it was helpful.