When students take linear tests online, the default behavior is that each tester will see the questions in the order they appear on the test when it is finalized. The program functions this way in an attempt to maintain test validity and not discriminate against testers with high test anxiety.
However, there is the setting, Randomize question order for each student during testing. This setting will cause students to see the questions in a randomized order. Once students begin testing this setting cannot be changed.