PMI Exam Questions

Which relationship type between activities are the most common?

You are the project manager of the NHQ Project. You are coaching Alice, a new project manager,
on the relationships in a project network diagram. Which relationship type between activities are
the most common?

A.
SS

B.
FS

C.
FF

D.
SF

Explanation:
The finish-to-start relationship type is the most common in a project network diagram. It means
that the predecessor activity must finish before its successor activity can start. For example, the
carpet must be installed before the painting activity can begin. What is precedence diagramming
method (PDM) in sequence activities? Precedence diagramming method (PDM) is used in critical
path methodology for building a project schedule network diagram that uses boxes or rectangles,
referred to as nodes, to represent activities, and join each other with arrows that show the logical
relationship that exists between them. This technique is also known as Activity-On-Node (AON).It
includes four types of dependencies or logical relationships: Finish-to-start(FS): The initiation of
the successor activity depends upon the completion of the predecessor activity. Finish-to-finish(FF): The completion of the successor activity depends upon the completion of the
predecessor activity. Start-to-start(SS): The initiation of the successor activity depends upon the
initiation of the predecessor activity. Start-to-finish(SF): The completion of the successor activity
depends upon the initiation of the predecessor activity.