* 1. How many years experince do you have in network operation?

* 2. Have you experienced “catastrophic failure” in your network? (“catastrophic” here means: an unpredictable event affecting a large portion of your network or service).

* 3. If yes, what was the cause of this catastrophic failure? (check all that apply)

* 4. How likely do you think that over the next 5 years your network is going to experience a catastrophic failure?

* 5. How often do you encounter network problems that can only be resolved by the top experts in my organisation?

* 6. Where is the origin of complexity in your network *mainly* located?

* 7. If you answered "other" above, please explain:

* 8. What is your definition of “network complexity”?