IT Manager Question:

The interviewer is looking for work related examples of how you measure success and when know you have reached accomplishment. Use a work related example and keep your answer short and to the point.
In my opinion and as it relates to the workplace, success is a measurable variable. If you don't measure your accomplishments, success is lost. Success can be tied to everything you do each day.
If I plan to accomplish 3 tasks before the end of the day and I do so, then I have been successful. Success simply means accomplishing what you set out to do within the parameters you specify, whether they be time, money or learning, etc.