Since two-thirds of the interview panel are managers in the organization, I considered this question to be a land mine. I described a particularly high-conflict situation for my answer. Two panel members appeared to like my answer, the others two did not. I would recommend selecting an example with more mundane facts.
How would I handle the training environment if during the class sessions the testing environment all of a sudden was non-functioning - knowing full well there was a lot of training material to cover in 4 days of classes.
Two options - first, make every attempt (30 minute maximum length) to get the network up and running again without major interruption. If that didn't work, fall back on Captivate learning slides to re-introduce the material and teach new concepts based on what was implemented in the Captivate environment.