The Question Library allows you to create an organized central repository that stores and archives questions within a course, allowing you to easily reuse them and import them into other courses.
Because of its utility for storing, organizing and accessing questions, you should consider creating all your questions in the Question Library., as the Quizzes, Surveys and Self Assessments tools utilize the Question Library. In addition, the Question Library allows you to view statistics such as how often a question is used and success rates.
You can use sections to organize questions into folders, which both organize the library and allow you to directly import the sections into quizzes, surveys or self assessments.
Questions can be added to the Question Library manually or imported from a quiz.
Once in the Question Library, questions can be imported into quizzes.