One of the basic concepts of PMBOK are the Project Management Process Groups and Project Management Knowledge Areas. For the PMP Certification exam, you need to know each of the process groups and knowledge areas and the mapping between the Project Management process groups and knowledge areas. So let's begin. There are five Project Management process groups - Initiation, Planning, Execution, Monitoring and Control and Closing. There are nine Project Management Knowledge Areas Integration Management Scope Management Time Management Cost Management Quality Management Human Resource Management Communications Management Risk Management Procurement Management For the PMP Certification exam, you will need to know the each of the tasks under the individual process groups as well as which of these tasks map to which Project Management Knowledge area. Note that Integration Management is the only knowledge area which has tasks in all the process groups. Hence it is the most important chapter in PMBOK as well as the PMP certification exam.