what on earth does this have to do with technical background (regarding alexa!)?!!!
You are welcome to google what is taught in an IT and/or engineering degree.
For me, it was electrical engineering.
There was a semester called "Networks."
Communication was also traced (for example with Wireshark).
What you pick up when programming in C / C++ / C# / operating systems / databases, I will not elaborate on here.
So don’t always make everyone look dumber than you ... that’s the case for very few.