PM Test Center

Although you got your project schedule approved prior to starting it, your client just moved the target finish date up two days. In order to finish the project two days earlier, which of the following can you apply?

A. Add two days of lag to the critical path
B. Add two days of lag to a non-critical path
C. Add two days of lead to the critical path
D. Add two days of lead to a non-critical path

Answer: C. Add two days of lead to the critical path
Lag is a forced waiting period and therefore, would push the project out. Adding lead, also known as negative lag, would do the opposite — overlap related tasks, which is what you will need to do in this example to finish sooner. However, only adding lead to the critical path would affect the end date. Although you can add lead anywhere, putting it on a non-critical path would not allow you to finish any sooner.

After making a small change to your project schedule, you realize now that you have two critical paths. Therefore, the project:

A. Will cost less
B. Must be modified to allow only one critical path
C. Has increased risk
D. Cannot be accomplished

Answer: C. Has increased risk
A critical path is the longest path (and the shortest amount of time possible) it takes to complete the project. If you have two critical paths, that means you have less flexibility in your schedule. As a result, you have increased risk. You can actually have as many critical paths as necessary but of course, the more you have the riskier the project becomes.

One disadvantage of using Activity-on-Arrow (AOA) is that:

A. Only finish-to-start relationships can be used.
B. Negative lag is not shown.
C. There can only be one critical path.
D. Project duration is limited to the total of all dummy activities.

Answer: A. Only finish-to-start relationships can be used.
A drawback of AOA is that only finish-to-start relationships are possible.

__________ is an activity sequencing technique that uses arrows to represent activities.

A. Critical chain method
B. Activity-on-Arrow (AOA)
C. Activity-on-Node (AON)
D. Precedence Diagramming Method (PDM)

Answer: B. Activity-on-Arrow (AOA)
In an AOA, activities are arrows and nodes are used to connect them.

__________ is an activity sequencing technique that uses nodes to represent activities.

A. Project management software
B. Activity-on-Arrow (AOA)
C. Precedence Diagramming Method (PDM)
D. Critical chain method

Answer: C. Precedence Diagramming Method (PDM)
In a PDM, also known as AON, activities are nodes and arrows are used to show relationships.

For your new software project, you decide you need to use a Graphical Evaluation and Review Technique (GERT) network diagram. When asked by an intern why you chose to use GERT, you explain that one of the main advantages is that you can:

A. Be more accurate than using a PERT
B. Use hammock activities
C. Assign multiple resources
D. Create loops between tasks

Answer: D. Create loops between tasks
GERT allows for conditions or loops between tasks. For projects with iterative tasks, GERT will often tell a better story.

Resource leveling typically results in a:

A. Project cost overrun
B. Project cost savings
C. Project duration longer than the baseline
D. Project duration shorter than the baseline

Answer: C. Project duration longer than the baseline
When resource leveling, work scheduled for resources that are over-allocated will be spread over a longer period of time. As a result, this smoothing out process will usually cause the project to take longer.

While reviewing your weekly report, you notice that two of your resources are over-allocated. One way to solve this is to:

A. Level resources
B. Use PERT
C. Add lag
D. Crash the schedule

Answer: A. Level resources
Of the choices, only leveling resources is the only method that will relieve over-allocated resources. Leveling will take the extra work and move it to a different date so the resources will not exceed their maximum per day.

You plan on using a project management information system (PMIS) to develop a Gantt chart. One drawback of using a Gantt chart is:

A. Finish dates for each project cannot be manually set
B. WBS outline cannot be represented
C. Relationships between tasks are not displayed
D. Only one resource can be assigned to a task

Answer: C. Relationships between tasks are not displayed
Although some PMIS tools do show relationships between tasks (e.g. Microsoft Project), traditionally, Gantt charts do not display them.

Dwight’s project is behind schedule. As a result, he is looking to reduce the duration of his project to bring it back on track. If cost is not a factor, what tactic should he use?

A. Fast-track
B. Critical path
C. PERT
D. Crash

Answer: D. Crash
Crashing is one method to reduce the project duration. This is done by adding resources which leads to an increase in costs.