A fairly typical form of exam in Russia is "written-oral", where students are writing a test together as usual, with everyone given different problems to solve/

A fairly typical form of exam in Russia is "written-oral", where students are writing a test together as usual, with everyone given different problems to solve/theorems to prove/things to describe, but the time slot is way larger than required for most people, and in the end when you are done a professor (of which several are usually present) sits with you for 5-15mins to discuss whatever you wrote, maybe asks some extra questions, and gives you a grade on the spot. So, if you copy a perfect solution and have no idea how what you copied works, you are likely to fail anyway; if you just happened to get unlucky with your problems you may still be able to talk your way into a B/C showing you know stuff. This sounds like an absolutely perfect match for zoom, since the problem where there are a bunch of people in the audience constantly discussing some other problems (or problems similar enough you can get a hint) doesn't exist anymore, and you don't need to book a large room for 6 hours so the stragglers could all be talked to by professors.