The PMBOK Guide (2013) defines process groups as follows:

“These five Process Groups (Initiating, Planning, Executing, Monitoring & Controlling, Closing) have clear dependencies and are typically performed in the same sequence on each project.”    

Process groups are executed at a high level for the whole project but they are also repeated at lower levels even down to that of individual work packages when this is necessary. Provide an example of a recent work or school project of yours where you were in charge if managing all of these process groups. Did you manage to meet the project success criteria on time?