easyMultiple Select
Key Project Scheduling Tools: PERT and Gantt Charts
Which TWO tools are commonly used for project scheduling?
Quick Answer
The correct answer is the Gantt chart, along with the PERT chart, as the two tools commonly used for project scheduling. A Gantt chart provides a visual, bar-chart representation of a project schedule, showing task start and end dates, durations, and overlaps, while a PERT chart uses a network diagram to map task dependencies and incorporates weighted time estimates—optimistic, pessimistic, and most likely—to calculate expected durations and identify the critical path. On the CompTIA Project+ PK0-005 exam, this concept tests your ability to distinguish between scheduling artifacts; a common trap is confusing PERT charts with simple flowcharts or assuming Gantt charts show dependencies as clearly as network diagrams. Remember, Gantt charts are for timeline visualization, while PERT charts are for dependency and uncertainty analysis. A useful memory tip: Gantt is for “when,” PERT is for “what depends on what.”
⚠ Common exam trap
It's easy for candidates to confuse quality management tools (Fishbone, Pareto, Histogram) with scheduling tools, or incorrectly think that any chart with bars or lines qualifies for scheduling, but only PERT and Gantt charts are explicitly designed for project scheduling in the PK0-005 exam.
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
✓
PERT chart
A PERT chart is correct because it is a project scheduling tool that diagrams task dependencies and uses three-point (optimistic, most likely, pessimistic) time estimates to compute expected durations and identify the critical path. A Gantt chart is also correct because it is a standard project scheduling tool that displays tasks as horizontal bars along a timeline, showing start and end dates, durations, and overlaps. The other options are quality-management and statistical tools rather than scheduling tools: a fishbone (Ishikawa) diagram organizes root causes of a problem, a Pareto chart ranks causes by frequency using the 80/20 principle, and a histogram displays the frequency distribution of data.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
PERT chart
Why this is correct
A PERT chart is a network diagram that sequences tasks and their dependencies, using optimistic, pessimistic and most likely estimates to schedule a project. It satisfies the scheduling requirement by mapping task order and critical path timing.
- ✗
Fishbone diagram
Why it's wrong here
A fishbone diagram arranges causes by category to trace a problem's root causes; it holds no durations, dependencies or dates, so it cannot schedule activities. It is tempting because it is a core quality tool used during project execution, and it would be correct when performing root cause analysis on a defect or delay.
- ✓
Gantt chart
Why this is correct
A Gantt chart is a bar chart plotting tasks against a calendar timeline, showing durations, start and finish dates, and overlaps. It satisfies the scheduling requirement by visually sequencing work over time, complementing network-based PERT diagrams.
- ✗
Pareto chart
Why it's wrong here
A Pareto chart ranks causes by frequency or impact to highlight the vital few; it carries no time, sequence or resource data, so it cannot schedule activities. It is tempting because it is a standard project quality tool, and it would be correct when prioritising which problems to address first.
- ✗
Histogram
Why it's wrong here
A histogram charts frequency distribution of data, such as resource usage or defect counts, so it cannot sequence activities or assign dates. It is tempting because it visualises project data, and it would be the correct choice when analysing how often a variable occurs, for example the spread of task durations.
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Same concept, more angles
1 more way this is tested on PK0-005
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which TWO tools are commonly used for schedule management? (Select TWO.)
easy- A.Control chart
- B.Pareto chart
- ✓ C.Network diagram
- ✓ D.Gantt chart
- E.RACI matrix
Why C: A network diagram (C) is a standard schedule management tool because it models activities and their logical dependencies (e.g., finish-to-start relationships) and supports critical path analysis to determine project duration and float. A Gantt chart (D) is likewise a core scheduling tool, displaying activities as horizontal bars against a timeline to show start and finish dates, durations, and progress. Both are explicitly used in the PMBOK schedule management processes for developing and controlling the schedule. The unmarked options do not belong: a control chart (A) monitors process stability and variation in quality management, a Pareto chart (B) prioritizes problems by frequency in quality management, and a RACI matrix (E) is a responsibility assignment tool for resource management, not scheduling.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PK0-005 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PK0-005 exam.