AACE CST Primer (AACE Certified Scheduling
Technician Exam) Questions With Complete
Solutions
Course
AACE
1. Question:
What is the primary purpose of a project schedule?
Solution:
The primary purpose of a project schedule is to establish a timeline for the project, ensuring that
all tasks and milestones are completed within the allocated timeframe. It serves as a roadmap for
project execution, helping project managers allocate resources efficiently, monitor progress, and
meet deadlines. The schedule also allows for identifying potential risks and delays, enabling
corrective actions to be taken promptly.
2. Question:
Which of the following is the best definition of "Float" in project scheduling?
a) The amount of time a task can be delayed without affecting the project deadline.
b) The total duration required to complete a project.
c) The total resources required for a project.
d) The difference between the earliest start and latest finish dates of a task.
Solution:
The correct answer is a) The amount of time a task can be delayed without affecting the
project deadline.
Float (also known as slack) is the time that a task can be delayed without delaying the overall
project completion. It helps in managing the flexibility of a schedule, allowing some tasks to be
delayed without impacting the project’s critical path.
3. Question:
What is a "Critical Path" in project scheduling?
Solution:
The Critical Path is the longest sequence of dependent tasks that determines the minimum project
duration. Tasks on the critical path have zero float, meaning any delay in these tasks will directly
impact the project completion date. Identifying the critical path is crucial for effective project
management, as it highlights tasks that must be completed on time to avoid delays in the overall
project.
,4. Question:
Which scheduling technique involves assigning resources to tasks and determining the
sequence in which these tasks should be performed?
a) Program Evaluation and Review Technique (PERT)
b) Critical Path Method (CPM)
c) Gantt Chart
d) Resource Leveling
Solution:
The correct answer is b) Critical Path Method (CPM).
CPM is a project management tool used to determine the critical path of a project and schedule
tasks efficiently. It involves analyzing task durations, dependencies, and resource allocation to
ensure that the project is completed as quickly as possible while optimizing the use of available
resources.
5. Question:
What does "Lag" mean in project scheduling?
Solution:
Lag refers to the delay or waiting period between two tasks in a project schedule. It is the amount
of time that must pass before the successor task can start after the predecessor task finishes. For
example, if a task finishes, and the next task cannot start immediately, a lag time (e.g., 2 days) is
introduced between the two tasks.
6. Question:
In which of the following situations would you use "Resource Leveling" in project
scheduling?
a) When you need to shorten the project duration by reducing the float
b) When there is over-allocation of resources or conflicts between resources
c) When you need to optimize the project critical path
d) When you want to calculate the project’s expected duration
Solution:
The correct answer is b) When there is over-allocation of resources or conflicts between
resources.
Resource leveling is used to resolve resource over-allocation by adjusting the start and finish
dates of tasks without changing the project’s scope. The goal is to distribute resource usage
evenly throughout the project to avoid periods of excessive workload or underutilization.
7. Question:
, Which of the following is NOT a benefit of using a Gantt Chart?
a) Provides a visual representation of project tasks and their durations
b) Shows the critical path of the project
c) Allows for easy identification of task dependencies
d) Enables tracking of progress against the project schedule
Solution:
The correct answer is b) Shows the critical path of the project.
While Gantt charts provide a clear visual timeline of tasks and their durations, they do not
explicitly show the critical path. To identify the critical path, methods like CPM or PERT are
used. Gantt charts focus more on the scheduling and progress of tasks rather than the analysis of
dependencies and critical path.
8. Question:
What does "Fast Tracking" refer to in project scheduling?
Solution:
Fast tracking is a schedule compression technique where tasks that were originally planned to be
performed in sequence are performed in parallel, in order to shorten the overall project duration.
This can increase the risk of rework or quality issues but can be useful when there is a need to
accelerate the project timeline without adding more resources.
9. Question:
Which of the following is an example of a project constraint in scheduling?
a) Budget
b) Task dependencies
c) Resource availability
d) All of the above
Solution:
The correct answer is d) All of the above.
Project scheduling is influenced by several constraints, including budget, task dependencies, and
resource availability. These factors must be managed carefully to ensure that the project stays on
schedule and within the allocated resources and budget.
10. Question:
What is the difference between "Early Start" (ES) and "Late Start" (LS) in project
scheduling?
Solution:
Technician Exam) Questions With Complete
Solutions
Course
AACE
1. Question:
What is the primary purpose of a project schedule?
Solution:
The primary purpose of a project schedule is to establish a timeline for the project, ensuring that
all tasks and milestones are completed within the allocated timeframe. It serves as a roadmap for
project execution, helping project managers allocate resources efficiently, monitor progress, and
meet deadlines. The schedule also allows for identifying potential risks and delays, enabling
corrective actions to be taken promptly.
2. Question:
Which of the following is the best definition of "Float" in project scheduling?
a) The amount of time a task can be delayed without affecting the project deadline.
b) The total duration required to complete a project.
c) The total resources required for a project.
d) The difference between the earliest start and latest finish dates of a task.
Solution:
The correct answer is a) The amount of time a task can be delayed without affecting the
project deadline.
Float (also known as slack) is the time that a task can be delayed without delaying the overall
project completion. It helps in managing the flexibility of a schedule, allowing some tasks to be
delayed without impacting the project’s critical path.
3. Question:
What is a "Critical Path" in project scheduling?
Solution:
The Critical Path is the longest sequence of dependent tasks that determines the minimum project
duration. Tasks on the critical path have zero float, meaning any delay in these tasks will directly
impact the project completion date. Identifying the critical path is crucial for effective project
management, as it highlights tasks that must be completed on time to avoid delays in the overall
project.
,4. Question:
Which scheduling technique involves assigning resources to tasks and determining the
sequence in which these tasks should be performed?
a) Program Evaluation and Review Technique (PERT)
b) Critical Path Method (CPM)
c) Gantt Chart
d) Resource Leveling
Solution:
The correct answer is b) Critical Path Method (CPM).
CPM is a project management tool used to determine the critical path of a project and schedule
tasks efficiently. It involves analyzing task durations, dependencies, and resource allocation to
ensure that the project is completed as quickly as possible while optimizing the use of available
resources.
5. Question:
What does "Lag" mean in project scheduling?
Solution:
Lag refers to the delay or waiting period between two tasks in a project schedule. It is the amount
of time that must pass before the successor task can start after the predecessor task finishes. For
example, if a task finishes, and the next task cannot start immediately, a lag time (e.g., 2 days) is
introduced between the two tasks.
6. Question:
In which of the following situations would you use "Resource Leveling" in project
scheduling?
a) When you need to shorten the project duration by reducing the float
b) When there is over-allocation of resources or conflicts between resources
c) When you need to optimize the project critical path
d) When you want to calculate the project’s expected duration
Solution:
The correct answer is b) When there is over-allocation of resources or conflicts between
resources.
Resource leveling is used to resolve resource over-allocation by adjusting the start and finish
dates of tasks without changing the project’s scope. The goal is to distribute resource usage
evenly throughout the project to avoid periods of excessive workload or underutilization.
7. Question:
, Which of the following is NOT a benefit of using a Gantt Chart?
a) Provides a visual representation of project tasks and their durations
b) Shows the critical path of the project
c) Allows for easy identification of task dependencies
d) Enables tracking of progress against the project schedule
Solution:
The correct answer is b) Shows the critical path of the project.
While Gantt charts provide a clear visual timeline of tasks and their durations, they do not
explicitly show the critical path. To identify the critical path, methods like CPM or PERT are
used. Gantt charts focus more on the scheduling and progress of tasks rather than the analysis of
dependencies and critical path.
8. Question:
What does "Fast Tracking" refer to in project scheduling?
Solution:
Fast tracking is a schedule compression technique where tasks that were originally planned to be
performed in sequence are performed in parallel, in order to shorten the overall project duration.
This can increase the risk of rework or quality issues but can be useful when there is a need to
accelerate the project timeline without adding more resources.
9. Question:
Which of the following is an example of a project constraint in scheduling?
a) Budget
b) Task dependencies
c) Resource availability
d) All of the above
Solution:
The correct answer is d) All of the above.
Project scheduling is influenced by several constraints, including budget, task dependencies, and
resource availability. These factors must be managed carefully to ensure that the project stays on
schedule and within the allocated resources and budget.
10. Question:
What is the difference between "Early Start" (ES) and "Late Start" (LS) in project
scheduling?
Solution:
