This sort of thing is exactly why the healthcare industry still uses faxes, even going electronic charts -> pdf -> fax -> pdf -> electronic charts in some cases.
I had a phone screen recently, and got asked some of the questions on this post. However, rather than that sigterm question, I got "What signal does the linux kill command emit by default?", (with the answer obviously being sigterm (I totally blanked out and got it wrong though :P)).
Anyway, I strongly suspect they're just misremembering that question.