You will never know all there is to know in Data Communications. Be honest with yourself concerning what you don't know. There are no Data Communications police. IF the network doesn't make good business sense, it probably makes no sense.
Technical details are important, technical details are important, technical details are important.
There is no such thing as a data communications failure, only networking solutions as yet unfounded. Beware of self-proclaimed data communications experts. It is more important to be able to ask data communications questions than it is to be able to supply data communications answers. If you're not moving forward, then you're losing ground to someone who is. In data communications, nearly anything is possible.