Today's networking technology is most likely never going to be fully understood or appreciated by the current generation of digital natives that some of us digital immigrants grew up with. 

I was fortunate.  I grew up with the evolution of the digital network.  My Information Technology career involved exploiting early networking technology advancements. 

Those that are less than 25 years old, might assume the internet became available with the television and radio.  

The history of the network infrastructure leads to an understanding today's digital network landscape.  The understanding is useful in obtain a background necessary to acquire advanced network certifications.

If you or your CS students are not familiar with RFCs or the evolution of the network layered model, you might consider reviewing IBM Z Educator Hub - Lecture Series replay #7.