This is another simple question which was asked to me in an interview.
As all interviewer requires real world example of every concept so the MVC (Model View Controller) application can be seen in a Calculator.
The buttons is the Controller.-> when you press the add button request is send to model.
The back end hidden knowledge is Model-> When you press the add button some business logic runs let say two number are added in the calculator then the answer is send to view.
The Display is View->The View is responsible to display the result.