With online learning, basically all of my exams are like this. I’ve heard of some people having proctored online exams, but luckily my school’s Math and CS departments seem to have opted to just make the questions harder/unable to be looked up, and gave up on restricting us from using notes or the internet. It’s actually surprising how well it works, if the professor can design the exam cleverly enough. Really the only way you can cheat is by colluding with other students (which admittedly is a fairly big issue) or, for some types of programming questions, by just running the code on your own machine (which again can be avoided by clever test design).