My licensing exam was computer adaptive. We were wanded, turned pockets inside out, videoed. You couldn't eat, take jackets on our off or anything. Lots of rules around how you sat at the table. These must be a fair bit lower tech for the cheating to work. You could wear earplugs and earmuf style sound suppression which I did. Wouldn't be super difficult to have audio in -> but I don't think it would have done much good.