Do I need to complete the GreenDriver program in one sitting?
No, you do not need to complete the GreenDriver program in one sitting. Your progress is being tracked as you move through the course, so you are free to logout at any time. The next time you login and launch the program, you will restart at the furthest point you reached. However, once you start the certification exam, you must complete it in one sitting. If you log out without completing the exam, you will have to restart the exam from the beginning the next time you log back in.