It is easier, because apparently companies like Google shit on scenarios like that for schools for software like Google Forms Quiz. As a school either you buy e

It is easier, because apparently companies like Google shit on scenarios like that for schools for software like Google Forms Quiz. As a school either you buy expensive software that sometimes still has such problems or you simply block access to source - immediate problem solved. This feature is just an improvement over not being able to see sources at all. A portable browser comes on a storage device which is not allowed in this scenario. Otherwise you could simply have a crib sheet on it. Maybe the whitelist is just for a local intranet (wikipedia mirror whatever).