Network & Project Management Quiz MC1492

2.

Which of the following statements is not correct

PERT is probabilistic in nature.
CPM is probabilistic in nature.
CPM and PERT use similar terminology but were developed independently
.All of these statements are correct

Correct Answer

A. CPM and PERT use similar terminology but were developed independently

3.

Which is not a feature of PERT/CPM?

An estimate of how long a project will take.
A graphical display of project activities.
An indication of critical activities
An indication of slack time.
All are features.
All are features.

Correct Answer(s)

A. All are features.
A. All are features.

Explanation

The given answer states that all of the options mentioned are features of PERT/CPM. PERT/CPM is a project management technique used to analyze and plan the activities involved in completing a project. The features mentioned in the options are all relevant to PERT/CPM. An estimate of how long a project will take is necessary for planning and scheduling. A graphical display of project activities helps in visualizing the project flow. An indication of critical activities helps in identifying tasks that could delay the project. And an indication of slack time helps in identifying tasks that can be delayed without affecting the project timeline. Therefore, all of these features are indeed part of PERT/CPM.

Rate this question:

4.

Mark the wrong statement:

A project is a set of activities that can be performed in a certain logical sequence.
A network is a graphic portrayal of interdependency relationship among the activities of a project.
An arrow representing an activity can have any length and shape.
An activity cannot be represented by more than one arrow but an arrow can represent one or more activities.

Correct Answer

A. An activity cannot be represented by more than one arrow but an arrow can represent one or more activities.

5.

Which of these may require the use of a dummy activity?

Activity-on-arrow network.
Activity-on-node network.
Both a and B.
None of these.
Gantt chart.

Correct Answer

A. Both a and B.

Explanation

Both the activity-on-arrow network and the activity-on-node network may require the use of a dummy activity. A dummy activity is a simulated activity that is added to the network to maintain the logical sequence and dependencies between other activities. It is used when there is a need to represent a dependency between two activities that cannot be directly connected. In both types of networks, the use of dummy activities helps to accurately represent the relationships and dependencies between activities.

Rate this question:

6.

The distribution that is used to represent path times is the

Bivariate.
Beta.
Normal.
Poisson.

Correct Answer

A. Beta.

Explanation

The beta distribution is commonly used to represent path times because it is a flexible distribution that can take on a wide range of shapes. It is defined on the interval [0,1] which makes it suitable for representing probabilities. Additionally, it has two shape parameters that allow it to be adjusted to fit different data patterns. This makes the beta distribution a suitable choice for modeling path times, where the values are typically bounded and can vary in shape.

Rate this question:

7.

In PERT, if the pessimistic time were 14 weeks, the optimistic time were 8 weeks, and the most likely time were 11 weeks,

The expected time would be 11 weeks
The expected time would be 6 weeks
The expected time would be 5.5 weeks.
There is not enough information.
None of the above.

Correct Answer

A. The expected time would be 11 weeks

Explanation

The expected time in PERT is calculated using a weighted average of the optimistic, pessimistic, and most likely times. The formula for calculating the expected time is (optimistic time + 4 * most likely time + pessimistic time) / 6. In this case, the optimistic time is 8 weeks, the most likely time is 11 weeks, and the pessimistic time is 14 weeks. Plugging these values into the formula, we get (8 + 4 * 11 + 14) / 6 = 11 weeks. Therefore, the expected time would be 11 weeks.

Rate this question:

1

8.

The critical path is

The least-slack path
The longest time path through the network
The series of activities whose delay is most likely to delay the entire project.
One or more paths through a network whose last activity’s EFT is the largest for any activity in the project.
All of the above.
None of the above.

Correct Answer

A. The longest time path through the network

Explanation

The correct answer is "the longest time path through the network." The critical path in project management refers to the sequence of activities that determines the total duration of the project. It is the longest path through the network diagram, meaning that any delay in activities along this path will directly impact the project's timeline. Therefore, it is crucial to closely monitor and manage the activities on the critical path to ensure the project stays on schedule.

Rate this question:

9.

The crash cost per week

Is the difference in costs divided by the difference in times (crash and normal).
Is considered to be linear in the range between normal and crash.
Needs to be determined so that the smallest values on the critical path may be considered for time reduction first.
All of the above.

Correct Answer

A. Needs to be determined so that the smallest values on the critical path may be considered for time reduction first.

Explanation

The correct answer is "needs to be determined so that the smallest values on the critical path may be considered for time reduction first." This means that the crash cost per week needs to be determined in order to prioritize the activities on the critical path that will lead to the greatest reduction in time. By determining the crash cost per week, the project manager can identify which activities should be accelerated first in order to minimize the overall project duration. This allows for efficient allocation of resources and ensures that the most critical tasks are addressed promptly.

Rate this question:

10.

Mark the wrong statement.

All activities on a critical path are critical activities.
A project network may have none, one, or more critical paths.
A delay in critical activity surely delays the completion of project.
Each critical activity has identical earliest and the latest start times.

Correct Answer

A. Each critical activity has identical earliest and the latest start times.

Explanation

The statement "Each critical activity has identical earliest and the latest start times" is incorrect. In a project network, each critical activity has identical earliest start times and latest finish times, but their latest start times may vary depending on the project schedule.

Rate this question:

Network & Project Management Quiz Mc1492

CPM is:

Quiz Preview

Which of the following statements is not correct

Which is not a feature of PERT/CPM?

Mark the wrong statement:

Which of these may require the use of a dummy activity?

The distribution that is used to represent path times is the

In PERT, if the pessimistic time were 14 weeks, the optimistic time were 8 weeks, and the most likely time were 11 weeks,

The critical path is

The crash cost per week

Mark the wrong statement.