Leadership questions are Behavioural/Personal Experience questions; they are less generic than Fit questions and their objective is to test specific skills needed to be a good consultant.
The main recurring questions on leadership are along these lines - Tell me about a time…
… you worked in a team and had to manage a conflict
… you led a team in a challenging/difficult situation
…you changed the opinion of a person/group
…you had an issue/disagreement with a colleague
…you faced a hard challenge
How to answer these questions? Interviewers remember stories…and given that they meet several candidates on interview day you want to build memorable stories. Personally, I found it very helpful to use a simple framework:
- Context: start by giving the context
- Issue: describe the issue you faced
- Solution: describe your solution to the issue
- Outcome and lesson learned: quantify your impact if you can and close with what you learned
As for the Personal Fit questions, my recommendation is to prepare for Behavioural questions by writing your stories and repeating them out loud. This will help you a lot on the interview day.
I hope it helps,