Network & Project Management Quiz Mc1492

The correct answer is "Critical Path Method." The Critical Path Method (CPM) is a project management technique used to plan and schedule activities in a project. It identifies the critical path, which is the longest sequence of dependent activities that determine the project's duration. By analyzing the critical path, project managers can prioritize tasks, allocate resources, and identify potential bottlenecks or delays. CPM is widely used in project management to ensure efficient and timely completion of projects.

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.

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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.

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.

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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.

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.

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.

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.