The purpose of this question is to learn more about your collaboration skills. No matter how talented you are, at some point, you are going to need the help of other people. Being able to collaborate with others requires tolerance, strong communication skills, and establishing relationships with people before you need their assistance. When answering this question, you should include one or all of these points. It is also helpful if you provide examples of how you did this and the results you achieved.
"While working for my previous company, we encountered a network performance issue. As hard as we worked, we could not identify the sources of slow performance. I decided to consult with our hardware team to find out if there was something in the IT infrastructure that was slowing things down. We created a plan of action, and executed it, then met to discuss the results. It turned out that one of our servers did not have enough memory and had become a bottleneck. We installed more RAM and resolved the issue, working together as a team."