Assess Your Knowledge and Experience The Certified Manufacturing Associate Body of Knowledge is a detailed content outline that focuses on documenting the topics, subtopics, importance, competency level and weighting of each content area. A completed BOK is utilized to build the certiļ¬cation exam. The BOK is a guide to what content areas will be tested and the weighting determines how much coverage from each content area will be presented on the certiļ¬cation exam. The Certified Manufacturing Associate Skills Checklist is a list that details the skills required to perform or have the knowledge of using the topics outlined on the body of knowledge.