The degree you receive will be identical to one earned in an on-campus program. There will not be an "online" designation on diplomas awarded to students who completed their degree program online.
The courses are typically taught asynchronously, which means learners access and study content anytime. However, there may be synchronous virtual office hours with faculty and teaching assistants, which students may need to attend in real time.
Exam schedules vary from course to course. In general, exams are open for a period of time, during which students can take the exam.