hardMultiple ChoiceObjective-mapped

PK0-005 Practice Question: Refer to the exhibit

Exhibit

Refer to the following project schedule:

Task ID | Duration | Predecessors
A | 5 days | None
B | 3 days | A
C | 4 days | A
D | 2 days | B, C
E | 1 day | D

What is the duration of the critical path?

Refer to the exhibit. What is the duration of the critical path?

⚠ Common exam trap

The trap here is that candidates often mistakenly sum the durations of tasks along a non-critical path (e.g., A→B→D→F = 11 days) or misread task durations, leading them to select 11 or 10 days instead of correctly identifying the longest path of 12 days.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

12 days

The critical path is the longest path in the network diagram. In the exhibit, the three paths are A→B→D→E (11 days), A→C→D→E (10 days), and A→C→E→F (12 days). Since 12 days is the longest, it is the critical path. Therefore, the project duration is 12 days.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
11 days
Why it's wrong here
11 days is the duration of path A-B-D-E, but the critical path is the longest, which is A-C-D-E at 12 days.
✗
10 days
Why it's wrong here
10 days does not match any path duration in the schedule.
✓
12 days
Why this is correct
Path A-C-D-E has a total duration of 12 days, making it the critical path.
✗
9 days
Why it's wrong here
9 days does not match any path duration in the schedule.

Go deeper

PK0-005 Practice Question: Refer to the exhibit

Exhibit

Why each option matters

Option-by-option breakdown

Related to this question