Before revision:  In particular, we determine the probability distribution of robustness over system connectivity and show that robustness is maximized by maximizing the number of links between strongly connected components of the graph representing the underlying system connectivity.
After revision:  In particular, we determine the probability distribution of robustness as a function of network topology and show that robustness is maximized by maximizing the number of links between strongly connected components of the graph representing the underlying system connectivity.