I have had a few questions here put on hold also. What I've gathered from my complaining, and the corresponding snarky comments from people, has been that unlike every other stack exchange site (that I regularly use), this site isn't about what you're using, but how you're using it. I'm not saying that's a bad thing, just that that's how I see it.
For example, on stack overflow, if I have a question about coding, it doesn't matter if I'm a web developer, full stack, machine language nut, professional amateur or anything student...if it's a coding question it belongs.
On ServerFault, if you ask a question about...let's say, vSphere, and you say you're learning vSphere as a student, it is off topic. If you rewrote the question, and said you're doing the exact same thing, but instead you are a professional in a business, it is on topic. This isn't specific to your question specifically, since there are a few reasons that it probably should have been closed according to others.
When this first started happening to me, I got pretty upset, as it seemed like the entire community was trying to troll me, and making silly arguments about why it didn't belong instead of either trying to help, or admitting to themselves that they didn't know how to answer the question.
After I calmed down a bit, and read the serverfault.com/tour page I noticed it says "Server Fault is a question and answer site for managing information technology systems in a business environment." As has already been said, and makes sense, your question wasn't in an actual business environment. The angry me would say, "why does it matter, if I can change the word student, to professional and then get useful answers". The answer there, I believe is that stack exchange is so massive that each sub site HAS to be incredibly focused, so that another site isn't invalid.
For better or worse, that seems to be the pattern for me. So, from now on, do yourself a favor, and just set up a pretend scenario, where you're in a business environment.....or post it on SuperUser.