Has anyone taken the computer based OASIS Certification Exam COS-C through OASIS Answers? None of the preparation classes are offered local so I'm going to take the exam at one of the approved testing centers. I am reviewing the OASIS information provided by CMS to take the exam. I was wondering if anyone had taken the exam and if its pretty much basic routine questions about the OASIS? If anyone has taken it could they share any tips or areas I should focus on. I've worked in home health for over 20 years and I hope I can pass it without the class. I guess I will soon find out lol.