You can create two types of question in Test Invite Exam System.
The questions and exams at Test Invite may exist independently from each other. For example, you can keep your questions by grouping them with folders and labels in question bank -without associating them with any exam-. You can then use these questions repeatedly in any exam. In this context, the question bank quickly allows you to prepare new exams by selecting the questions you want and reduce your chance of making mistakes.
Test invite does not require you to register the questions in the question bank. You can create the questions you want in an exam without including in the question bank. In this way, you will not let a question that you will only use in one exam to overcrowd the question bank.