TOPIC: Free CAPM® Exam Sample Question

In a software development project, if the developers could start fixing bugs two days after the testers begin testing, this arrangement implies:

A. A start-to-finish relationship with a 2-day lead
B. A start-to-start relationship with a 2-day lead
C. A start-to-finish relationship with a 2-day lag
D. A start-to-start relationship with a 2-day lag

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HINT: Note the difference between lead and lag.

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Answer and Explanation:
The correct answer is D.

A lag is the amount of time whereby a successor activity will be delayed with respect to a predecessor activity. Thus, if the development team could start resolving issues two days after the testers started testing, it means that the two tasks have a start-to-start or SS relationship with a 2-day lag.

Details for each option:

A. A start-to-finish relationship with a 2-day lead
Incorrect. A situation where bug fixing can start 2 days after testing is a start-to-start relationship.

B. A start-to-start relationship with a 2-day lead
Incorrect. Lead is the amount of time that a successor activity can be advanced from a predecessor activity. In this case, it is a start-to-start relationship where the successor activity is being delayed, not advanced.

C. A start-to-finish relationship with a 2-day lag
Incorrect. Bug fixing can start 2 days after testing starts is a start-to-start relationship.

D. A start-to-start relationship with a 2-day lag
Correct. Lag is the amount of time that the second activity can be delayed with respect to the previous activity. Thus, the question scenario describes a start-to-start relationship with 2- day lag.

Reference: A Guide to the Project Management Body of Knowledge, (PMBOK^® Guide) – Sixth Edition, Project Management Institute Inc., 2017, Page(s) 192-193