I believe each Professor/teacher/instructor is different in that they have their preferred way to test but at the same time may not have their option. Their institute may have a standard. Here where I work, I've seen all types of ways to test to include a system where the test is put up on a screen and each student answers the question from their seat like playing the game jeopardy. I believe a combination of true/false and multiple choice are significant but as you climb the ranks in education/college they should turn inturn essay type questions.