What do you consider the greatest obstacle you've had to overcome as a Network Security Professional thus far? What steps did you take to overcome it?

An interviewer may ask this question to learn how persistent you are in overcoming a challenge and the scale of the challenges you have had to face during your career. This will let them better determine the extent of your experience, especially if you are applying for a senior role. Answer with a real obstacle and how you overcame it so you will be prepared to answer any follow-up questions the interviewer may ask.

"By far my greatest challenge as a Network Security Professional has been creating an online security strategy for a large and disparate technology organization which had abnormally high amounts of traffic involving very sensitive data. I overcame this by assembling an innovative team of security specialists and convincing the company to provide us the resources necessary to accomplish the job. The results were no major security breaches and long-term cost savings compared to the organization's previous solution. "