USC, Marshall MBA R4 Phone Interview

Just completed the telephone interview with Veronica, who is very nice.
The questions asked after brief discussion of the time:
your current job
Why MBA
Why Marshall MBA
An example of leadership
Which areas to improve
Anything you want admissions office to know about you
My questions:
when to get the decision
challenges at the MBA study and advices for better handling of them
The interview lasted 21 minutes. Have no feeling about my own performance in the interview.
Good luck