Wow, I have learned a new found respect for my peers in Network Operations and Network Engineering. There is so much work, thought, and outright hard work to properly design, implement, and support a good network. When done right, users are 100% unaware of all the work required to achieve it, and naturally will not ever have a reason to think or need to engage the network groups responsible for making it happen.
As an infrastructure professional who spent most of his career understanding the role of properly configured and managed servers, services, and clients, I also recognize that it takes the same kind of philosophy and meticulous attention to detail for end users to have no reason to complain.
I take my hat off for all you network professionals, I salute you on mastering all these skills taught in this course, I can only imagine all the additional work and study for you CCNPs, CCIEs, etc.