Looking at the questions, it seems to be targeting at new to mid-level audiences? Might be a little too easy for mid-level programmers.
Also, even the title on that site says 2019, almost all of the questions are exactly the same from a few years ago from another website I found back then. The layout just looked much more fancier now.
I'm still trying to find good sample SAS interview questions and haven't found any really good ones yet. Guess I'll have to write one myself a few years from now 🙂 lol