I took some comp-sci and majored in "IT" in the 2000s. Lower level CS did not go over routing protocols, and the IT side never got into compilation, linking, state machines, or pointers.
In the 2000 my team had to deal with everything from compilation problems to hardware answering arp answers with fake mac addresses. The team consisted of a wide range of skills and abilities and information obviously leaks. While the DBA didn't need to know anything about OSPF, just by being in the same team as the network person they pick up how things work.
Now it seems that teams seem to be far more specialised and there's less cross-specialist learning.
