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ISEB-PM1 · Question #422

Which of these are logical dependencies in a precedence diagram method?

The correct answer is D. Start-to-start. Start-to-Start (SS) is one of the four recognized logical dependency types in the Precedence Diagram Method (PDM), making D the only valid answer. The four official PDM relationships are Finish-to-Start, Finish-to-Finish, Start-to-Start, and Start-to-Finish - all using "Finish"…

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Question

Which of these are logical dependencies in a precedence diagram method?

Options

  • AEnd-to-end
  • BFinish-to-end
  • CStart-to-end
  • DStart-to-start

How the community answered

(19 responses)
  • A
    5% (1)
  • B
    16% (3)
  • C
    5% (1)
  • D
    74% (14)

Explanation

Start-to-Start (SS) is one of the four recognized logical dependency types in the Precedence Diagram Method (PDM), making D the only valid answer. The four official PDM relationships are Finish-to-Start, Finish-to-Finish, Start-to-Start, and Start-to-Finish - all using "Finish" or "Start," never "End."

Why the distractors fail: Options A ("End-to-end"), B ("Finish-to-end"), and C ("Start-to-end") all use the word "end," which is not part of PDM terminology. PDM uses Finish, not "End," to describe the completion of an activity. These options are fabricated by substituting "end" for the correct term.

Memory tip: Remember the acronym FS, FF, SS, SF - every PDM dependency starts and ends with either F (Finish) or S (Start). If you see the word "End" in an answer choice, it's a trap.

Topics

#precedence diagramming#logical relationships#start-to-start#activity sequencing

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