Practice Test 3 Nov 2 Lecture
TRUE/FALSE: One of the most significant benefits of PERT is that it forces the project manager to sit down and plan the project in great detail-and thus come to an understanding of relationships between the activities.
TRUE
TRUE/FALSE: PERT and CPM are quantitative analysis tools designed to schedule and control large projects.
TRUE
TRUE/FALSE: PERT had its beginnings in a military department of the United States.
TRUE
TRUE/FALSE: PERT was developed for a project for which activity or task times were uncertain.
TRUE
TRUE/FALSE: Slack is the time an activity can be delayed without impacting the completion time of the project.
TRUE
TRUE/FALSE: The first step in planning and scheduling a project is to develop the work breakdown structure.
TRUE
TRUE/FALSE: With PERT, we are able to calculate the probability of finishing the project within a specified time.
TRUE
TRUE/FALSE: Both PERT and CPM networks show activities and activity sequences.
TRUE
TRUE/FALSE: The longest time path through a PERT/CPM network is called the critical path.
TRUE
Given an activity's optimistic, most likely, and pessimistic time estimates of 2, 5, and 14 days respectively, compute the PERT expected activity time for this activity. A) 6 B) 7 C) 9 D) 5 E) None of the above
A) 6
The expected time in PERT is A) a weighted average of the most optimistic time, most pessimistic time, and four times the most likely time. B) the modal time of a beta distribution. C) a simple average of the most optimistic, most likely, and most pessimistic times. D) the square root of the sum of the variances of the activities on the critical path. E) None of the above
A) a weighted average of the most optimistic time, most pessimistic time, and four times the most likely time.
Given an activity's optimistic, most likely, and pessimistic time estimates of 4, 12, and 18 days respectively, compute the PERT variance for this activity. A) 2.33 B) 5.44 C) 8.00 D) 64.00 E) None of the above
B) 5.44
Which of the following is not a concept associated with CPM? A) normal time B) probability C) normal cost D) crash cost E) deterministic network
B) probability
TRUE/FALSE: A PERT/CPM network is a graphical display of a project that connects activities.
TRUE
TRUE/FALSE: Before drawing a PERT or CPM network, we must identify all activities and their predecessors.
TRUE
TRUE/FALSE: CPM was developed for use in managing projects about which we have good information about activity or task completion times.
TRUE
TRUE/FALSE: Given the variability of the activity completion times, the original critical path we identify in our PERT analysis may not always be the actual critical path as the project takes place.
TRUE
TRUE/FALSE: In PERT, the earliest start time for an activity is equal to the latest of the earliest finish times of all of its immediate predecessors.
TRUE
TRUE/FALSE: In PERT, we assume that the project completion time can be modeled by the normal distribution.
TRUE
TRUE/FALSE: One PERT/COST assumption is that money is spent at a constant rate over the time taken to complete an activity.
TRUE
TRUE/FALSE: PERT stands for Probabilistic Evaluation and Review Technique.
FALSE Program Evaluation and Review Technique (PERT)
Given an activity's optimistic, most likely, and pessimistic time estimates of 4, 6, and 14 days respectively, compute the PERT expected activity time for this activity. A) 8 B) 6 C) 7 D) 9 E) None of the above
C) 7
Given an activity's optimistic, most likely, and pessimistic time estimates of 2, 10, and 20 days respectively, compute the PERT variance for this activity. A) 3 B) 6 C) 9 D) 18 E) None of the above
C) 9
In a PERT network, the earliest (activity) start time is the A) earliest time that an activity can be finished without delaying the entire project. B) latest time that an activity can be started without delaying the entire project. C) earliest time that an activity can start without violation of precedence requirements. D) latest time that an activity can be finished without delaying the entire project. E) None of the above
C) earliest time that an activity can start without violation of precedence requirements.
CPM A) assumes we do not know ahead of time what activities must be completed. B) assumes that activity time estimates follow the normal probability distribution. C) is a deterministic network technique that allows for project crashing. D) is a network technique that allows three time estimates for each activity in a project. E) None of the above
C) is a deterministic network technique that allows for project crashing.
PERT A) assumes that we do not know ahead of time what activities must be completed. B) assumes that activity time estimates follow the normal probability distribution. C) is a network technique that uses three time estimates for each activity in a project. D) is a deterministic network technique that allows for project crashing. E) None of the above
C) is a network technique that uses three time estimates for each activity in a project.
Given an activity's optimistic, most likely, and pessimistic time estimates of 4, 14, and 18 days respectively, compute the PERT expected activity time for this activity. A) 14 B) 12 C) 11 D) 13 E) None of the above
D) 13
Managers use the network analysis of PERT and CPM to help them A) derive flexibility by identifying noncritical activities. B) replan, reschedule, and reallocate resources such as manpower and finances. C) plan, schedule, monitor, and control large and complex projects. D) All of the above E) None of the above
D) All of the above
The critical path of a network is the A) shortest time path through the network. B) path with the fewest activities. C) path with the most activities. D) longest time path through the network. E) None of the above
D) longest time path through the network.
The first step in planning and scheduling a project is to develop the A) employee scheduling plan. B) PERT/CPM network diagram. C) critical path. D) work breakdown structure. E) variance calculations for each activity.
D) work breakdown structure.
Slack time in a network is the A) amount of time that an activity would take assuming very unfavorable conditions. B) shortest amount of time that could be required to complete the activity. C) amount of time that you would expect it would take to complete the activity. D) difference between the expected completion time of the project using pessimistic times and the expected completion time of the project using optimistic times. E) amount of time that an activity can be delayed without delaying the entire project.
E) amount of time that an activity can be delayed without delaying the entire project.
TRUE/FALSE: CPM is a probabilistic analysis of managing a project.
FALSE
TRUE/FALSE: In PERT, the most likely completion time of an activity is used to represent that activity's time within a project.
FALSE
TRUE/FALSE: PERT is a deterministic analysis tool allowing for precise times of activities within a project.
FALSE
TRUE/FALSE: PERT is a network technique similar to CPM, but PERT allows for project crashing, whereas CPM does not.
FALSE
TRUE/FALSE: The expected completion time and variance of an activity is approximated by the normal distribution in a PERT analysis.
FALSE
TRUE/FALSE: The identification of the project activities and their time, cost, resource requirements, predecessors, and person(s) responsible is called PERT planning.
FALSE
TRUE/FALSE: The optimistic time is the greatest amount of time that could be required to complete an activity.
FALSE
TRUE/FALSE: The three time estimates employed in PERT are optimistic time, average time, and pessimistic time.
FALSE
TRUE/FALSE: The variance of the project completion time is equal to the sum of the variances of all the activities.
FALSE
TRUE/FALSE: With CPM, we are able to calculate the probability of finishing the project within a specified time.
FALSE
TRUE/FALSE: CPM stands for Comprehensive Project Method.
FALSE Critical Path Method (CPM)