Question 1

In critical path scheduling,slack is computed as the difference between finish and start times.

Accepted Answer

In critical path scheduling, slack (or float) is computed as the difference between the earliest and latest start times of a task, or the difference between the earliest and latest finish times of a task, not simply the difference between finish and start times of the task itself.

Question 2

An activity in a network diagram has an optimistic time estimate of five days,a most likely time estimate of seven days,and a pessimistic time estimate of 15 days.Its expected time is eight days.

Accepted Answer

This is the formula for expected time in the Three-Point Estimation technique. E = (O + 4M + P) / 6. Plugging in the given values, we get E = (5 + 4(7) + 15) / 6 = 8. Therefore, the statement is true.

Question 3

Removing safety time from the individual activities and putting the total safety time at the end of the critical path creates a project buffer.

Accepted Answer

This statement is true. By removing safety time from individual activities and placing it at the end of the critical path, a project buffer is created. The project buffer helps to protect the project completion date by providing extra time to deal with any unexpected delays or issues that may arise during the project.

Question 4

Accounting uses project management information to provide a time line for the marketing program.

Accepted Answer

Accounting uses financial information to provide a budget for the marketing program, while project management uses schedules and timelines to ensure the program is implemented efficiently. While there may be some overlap in the information used, accounting does not rely on project management for a time line.

Question 5

With probabilistic time estimates for activities,(m)denotes the mean time.

Accepted Answer

The answer of With probabilistic time estimates for activities,(m)denotes the...

Question 6

Crashing is shortening the total time for completing a project by incurring higher costs from shortening activities.

Accepted Answer

Crashing is a technique used in project management to shorten the total duration of the project by adding additional resources and incurring additional costs to accelerate certain activities.

Question 7

For projects whose activities have probabilistic time estimates,the probability of completing the project in a specified amount of time is determined by the standard deviation for the critical path only.

Accepted Answer

The answer of For projects whose activities have probabilistic time...

Question 8

List and briefly describe the phases in the project life cycle.

Accepted Answer

The answer of List and briefly describe the phases in...

Question 9

When we are unsure about the duration of project activities,we use probabilistic time estimates.

Accepted Answer

Probabilistic time estimates are used when we are uncertain about the duration of project activities. These estimates take into account the probability of different outcomes and provide a range of possible durations for each activity.

Question 10

A Gantt chart can be use to display graphically the scheduled times for activities.

Accepted Answer

This is true. A Gantt chart uses bars to represent different tasks or activities, and displays them over a timeline to show start and end dates. This makes it easy to see which tasks are scheduled to happen when, and how they overlap or depend on each other.

Question 11

In network diagramming,arrows represent precedence relationships.

Accepted Answer

In network diagramming, arrows are used to represent the flow and sequence of activities or tasks, indicating their dependencies or precedence relationships.

Question 12

The sum of the activity times on the critical path determines the total slack available.

Accepted Answer

The sum of the activity times on the critical path determines the project duration, not the total slack available. Total slack is the amount of time an activity can be delayed without delaying the project's completion date.

Question 13

What are the steps involved in using network planning techniques?

Accepted Answer

The answer of What are the steps involved in using...

Question 14

In making a forward pass through a network,three activities are immediate predecessors for activity T.The early start time for activity T is the largest EF for the three activities that are immediate predecessors for activity T.

Accepted Answer

This statement is true according to the forward pass method used in network analysis. The early start time for an activity is determined by identifying the largest EF (early finish time) of its immediate predecessor activities.

Question 15

An approach for getting projects done faster and more consistently at or before the project due date is the critical chain approach.

Accepted Answer

The critical chain approach aims to identify and focus on the tasks that are most critical to the project's completion and ensure that they are completed on time. This approach can result in faster and more consistent project completion at or before the project due date.

Question 16

If a delay in an activity will delay completion of the whole project,the activity has slack.

Accepted Answer

An activity with no slack is critical, meaning any delay in this activity will delay the completion of the whole project. Slack or float is the amount of time that an activity can be delayed without causing a delay in the project completion date.

Question 17

Backward scheduling develops the LS and LF times.

Accepted Answer

Backward scheduling develops the Late Start (LS) and Late Finish (LF) times, but it is forward scheduling that develops the Early Start (ES) and Early Finish (EF) times.

Question 18

What are the benefits of network planning techniques?

Accepted Answer

The answer of What are the benefits of network planning...

Question 19

The TOC focuses on correct placement of buffers.

Accepted Answer

The answer of The TOC focuses on correct placement of...

Question 20

The probability of completing a project in a specified amount of time is being calculated.For a particular path through the project,the z-value shows the path's number of standard deviations that the specified time is past the expected path completion time.

Accepted Answer

The statement accurately describes how z-values are used in calculating the probability of completing a project in a specified amount of time.

Quiz 16: Project Management