I took a couple of online classes a while back. One had every quiz and test taken in a proctored center, and the other was entirely at home, and very easy to cheat on.
It's things like this that cause online college degrees to be considered worthless. The employer can't possible know if the college had anti-cheating software in place.
One of the real things that cause this, in my opinion, is the required courses that students simply view as a necessary hurdle they need to cross in order to get to the more interesting advanced courses. The solution to this would either be to make all courses interesting (not gonna happen) or change requirements and things around. This cheating problem in online classes doesn't look like its ending soon.