Study & Get Succeed 100% (NCCER Introduction to Drain, Waste, and Vent (DWV) Systems (02111) Learning Program). It is a good idea to review the material before you take a Certificate Exam. You should try to do this where the conditions are the same as those under which you will take the certification exam for which you are studying. This means that you should be in an area where there is no distraction, with all of your materials readily available. Many professionals have found that having someone with them who can ask questions and encourage comprehension as well as use of the calculator option is helpful. This course offers you the opportunity to prepare for the exam by showing you the material that you need to know in order to pass your exam. This course is designed to help you prepare for your certification exam with a minimum investment in time. Our comprehensive study guide, written by instructors and experienced exam-takers, has been researched and written to help you succeed on your test. It includes an online glossary of terms, practice questions, flashcards for quick memorization, and a helpful index that provides a convenient reference for all your study needs. Taking this exam will help you to achieve your goal of earning a certificate. With our go-to-anywhere portable design, you can take it anywhere and access the exam instantly.