When you're ready to take the PMP (Project Management Professional) Certification exam, expect to see up to ten questions dealing with network diagrams, precedence diagramming, and scheduling issues. Here are some PMP details you need to know:
FS = Finish-to-start
FF = Finish-to-finish
SS = Start-to-start
SF = Start-to-finish
Lead = The amount of time an activity can be advanced with respect to a predecessor activity
Lag = The amount of time a successor activity is required to be delayed with respect to a predecessor activity
A mandatory dependency is based on the nature of the work.
A discretionary dependency is based on a best practice or preferred way of doing something.
An external dependency is based on relationships outside the project.
An internal dependency is based on dependencies inside the project.