luja
Unable to answer "What kind of Internet connection does CERN main library offer?" for https://osm.org/node/701853273 via StreetComplete 33.2:

Why you have radio buttons here.
CERN lib has public computers, public printer/scanner/photocopy

CERN WIFI, nearly everywhere at CERN we have CERN WIFI

And there are plugs with ethernet and also still cheaper net, but I did not test it as I dont have a phy for it at the moment. i will test it later with an old machine ;-)