Online Quizzes

[If you have online quizzes or tests for your course as graded assessments, provide a general description of the online quiz or test component. When are they scheduled to be done? How many in total? Open book or not? Timed test or not? What are generally covered for each test?  How many and what types of questions generally will be included in each online test (e.g. multiple choice, short answer, or other)? Roughly how many minutes you expect students to finish each test? Will students have only one attempt or multiple attempts to take each test?  When each test will generally be due? etc.]