AACE International Updated PSP Exam Questions and Answers by rumaysa

Impact of Changing Activity E's Duration:

Activity E's new duration = 4 months.

The critical path passes through Activities A → C → D → E → H → I.

Recalculate Project Duration:

Original duration with E = 3 months: 19 months.

Increasing E to 4 months does not impact the overall path since it remains within the critical path's time allowance.

Overall project duration remains 19 months.

Cross-Verification:

Option B: Incorrect. Assumes additional delays.

Option C: Incorrect. Overestimates delays.

Option D: Incorrect. Miscalculates path changes.

Option A: Correct. Matches revised critical path duration.

 The Critical Path comprises the sequence of activities that directly impact the project’s completion time.

 If only the last half of Activity B delays the subsequent activities, then this portion lies on the critical path.

 References: PSP Study Guide, Section 2.4.3 – Schedule Analysis, emphasizes identifying segments of activities that are critical due to dependencies and float values.

Activities not on the critical path are those with positive float, meaning they can be delayed without affecting the overall project completion time. The determination of such activities requires performing a forward and backward pass calculation as per CPM (Critical Path Method) analysis principles (PSP Study Guide, Section 2.2.4, "Relationships").

For example:

Identify the critical path by analyzing total float values (typically, critical path activities have zero total float).

Exclude activities that do not fall on the critical path.