CS105, CS306 and MATH108 Possible in SDC Free Trial Window?

[jsd]

You can not take exams during the trial window. Not sure about the quizzes.
I did all three of those within a paid month period. OS is a breeze, Discrete Math was a little harder but I also don't have a math background and was still able to figure it out. Comp Arch was a huge pain because of the project (the quizzes/exam weren't too bad). But they've also added an additional project since I've taken it, which should make it a bit easier as it gives you more ways to collect points if you get stuck on the difficult project.