Chapter 9 Project Scheduling
C
101) Which technique would accelerate the completion of a project? A) Hammocking B) Bursting C) Laddering D) Passing
B
2) A sequence of activities defined by the project network logic is a(n): A) Event. B) Path. C) Node. D) Route.
B
20) Activities C, D, and E in the project represented by the network are to be hammocked. What are the early start and late finish times of the hammock activity? A) 6, 20 B) 6, 26 C) 9, 20 D) 9, 26
F
25) At a burst point in a backward pass, the largest succeeding late start becomes the late finish for that node.
C
30) The length of time expected to complete an activity assuming that its development proceeds normally is called the: A) Optimistic duration. B) Pessimistic duration. C) Most likely duration. D) Normal duration.
A
32) The variance of an activity is given by: A) [1/6(b-a)]2. B) 1/6[b-a]. C) [1/36(b-a)]2. D) 1/36[b-a].
F
45) The late start time should be calculated using a forward pass through the network.
A
5) An activity has an expected duration and an expected cost. Another name for an activity is a(n): A) Work package. B) Node. C) Critical path. D) Event.
C
https://i.imgur.com/62wLvYg.png 68) Project Test Bank is composed of activities we will refer to as A, B, C, and D for convenience (and lack of creativity). Durations and precedence requirements are shown in the table. Each of these activities can be conveniently laddered into two sub-activities of equal duration, so activity C in the original project becomes two activities, C1 and C2, each of which lasts 7 days. The first half of each activity serves as the predecessor to its second half and the first half of the original following activity. What is the difference in the late start time for activity C in the original project and activity C1 in the laddered project? A) 3 B) 5 C) 7 D) 9
D
https://i.imgur.com/Fr8ONEK.png 55) What is the late start time for Activity E given the activity times and precedence requirements shown in the table? A) 14 B) 15 C) 16 D) 17
B
https://i.imgur.com/Fr8ONEK.png 57) What is the early start time for Activity G given the activity times and precedence requirements shown in the table? A) 22 B) 21 C) 20 D) 19
D
https://i.imgur.com/Fr8ONEK.png 58) What is the early finish time for Activity F given the activity times and precedence requirements shown in the table? A) 15 B) 17 C) 19 D) 21
A
https://i.imgur.com/apfJq0i.png 13) Based on the activity network pictured, what is the BEST statement? A) Before starting Activity C, Activity A and Activity B must be completed. B) Before starting Activity D, Activity A and Activity B need to be completed. C) Before starting Activity E, Activity A and Activity B need to be completed. D) Before starting Activity C, Activity A and Activity D must be completed.
B
https://i.imgur.com/lbJPlBZ.png 52) What is the earliest that Activity D can begin if Activity A takes 3 days, Activity B takes 5 days, and Activity C takes 7 days? A) Day 15 B) Day 7 C) Day 5 D) Day 3
D
https://i.imgur.com/rKQBg8M.png 84) Use the network diagram and activity lengths in the nodes to determine the slack time for activity D. A) 3 B) 2 C) 1 D) 0
A
https://i.imgur.com/usQrSCq.png 79) What is the slack time for Activity B given the activity times and precedence requirements shown in the table? A) 10 B) 9 C) 8 D) 7
A
https://i.imgur.com/z2NaKc6.png 65) Use the network diagram and activity lengths in the nodes to determine the early finish time for activity G. A) 26 B) 25 C) 24 D) 23
C
https://i.imgur.com/zz6Gwk8.png 61) Use the information in the table to determine the early finish time for Activity D. A) Day 23 B) Day 26 C) Day 29 D) Day 32
D
https://i.imgur.com/zz6Gwk8.png 62) Use the information in the table to determine the late finish time for Activity B. A) Day 17 B) Day 20 C) Day 23 D) Day 26
T
21) Preceding activities are those that must occur before others can be done.
C
3) One of the defining points of a network, a junction point joined to some or all of the others by dependency lines, is called a(n): A) Event. B) Path. C) Node. D) Burst.
T
85) Float is always measured in exactly the same way as slack.
T
86) Negative float exists when a project's critical path has been completed more quickly than anticipated.
C
https://i.imgur.com/7tDSEpW.png 53) What is the early start time for Activity D given the activity times and precedence requirements shown in the table? A) 7 B) 9 C) 11 D) 13
T
22) A merge activity has two or more immediate predecessors.
F
23) Burst activities are those with two or more successor activities.
F
91) The PERT technique assumes that durations are more deterministic.
B
https://i.imgur.com/xoM4SP1.png 41) A gentleman farmer maniacally works on academic projects to raise funds for his true passion, farming. He has identified seven tasks and developed three time estimates (all in days) of the next big project on the farm, replacing the fence at the comedy pasture. Tasks, precedence requirements, and time estimates are shown in the table. What is the expected completion time of the project? A) 32 days B) 33 days C) 34 days D) 35 days
D
https://i.imgur.com/Pdz4Cwq.png 8) Which of these statements about this network is BEST? A) Activities A and B are serial activities. B) Activities B and C are serial activities. C) Activities A and C are serial activities. D) Activity D is a merge activity.
B
https://i.imgur.com/xoM4SP1.png 42) A gentleman farmer maniacally works on academic projects to raise funds for his true passion, farming. He has identified seven tasks and developed three time estimates (all in days) of the next big project on the farm, replacing the fence at the comedy pasture. Tasks, precedence requirements, and time estimates are shown in the table. What is the standard deviation of the project's critical path? A) 1.33 days B) 1.56 days C) 1.25 days D) 1.75 days
D
4) These can be located by doing a backward pass through a network. A) Critical paths B) Merge activities C) Successors D) Burst activities
A
103) In general, the better candidates for shortening are: A) Early tasks opposed to later tasks. B) Later tasks opposed to early tasks. C) Merge tasks opposed to burst tasks. D) Burst tasks opposed to merge tasks.
F
43) You must know the mean of an activity in order to determine its standard deviation.
A
1) The term ordered activity means: A) Tasks must either precede or follow other tasks in project planning and management. B) Tasks cannot be performed unless the project manager issues a specific command to perform the work. C) Prior project planning removes the need for any rush so that tasks can be performed in a methodical fashion. D) Tasks are not performed unless the customer issues a specific request to perform the work.
B
100) The BEST candidate activities for shortening the overall project are: A) The shortest tasks. B) The longest tasks. C) The merge tasks. D) The burst tasks.
D
102) In order to reduce the length of a project, it would be wise to shorten: A) The project activity that costs the least to speed up. B) The project activity that can be speeded up by the greatest amount. C) The critical path activity that can be speeded up by the greatest amount. D) The critical path activity that costs the least to speed up.
D
15) There's an old saying, "The job is not finished until the paperwork is done." From an activity network standpoint, this does not necessarily mean that the paperwork can't begin until the last non-paperwork activity is completed. It might be possible to work on some paperwork as early activities are completed. In order to depict this in an activity network: A) Hammock activities could be drawn. B) Subroutines could be added. C) Shortcuts can be added to the network. D) Laddering could be used to redraw the network.
A
16) The overall effect of laddering activities is to: A) Streamline the linkage and sequencing between activities and keep project resources fully employed. B) Summarize some subsets of the activities identified in the overall project network. C) Allow the project team to disaggregate the overall project network into logical summaries. D) Allow the project manager to more fully deploy resources and complete the project with zero slack.
B
17) Summaries for some subsets of the activities identified in the overall project network are called: A) Ladder activities. B) Hammock activities. C) Negative float activities. D) Compressed activities.
C
18) Hammock activities allow: A) Project managers to streamline the linkage and sequencing between activities. B) Project workers to effectively skip nonessential activities without compromising project quality. C) The project team to better disaggregate the overall project network into subsets. D) The project manager to identify float more quickly and leverage it more successfully for the overall success of the project.
T
24) At a merge point in a forward pass, the largest preceding early finish becomes the early start for that node.
D
29) Prior to creating a network, it is important to: A) Identify all loops through activities. B) Identify the party responsible for each activity. C) Calculate the float for each activity. D) Understand the activity precedence.
D
31) Ray's shipment of materials hit every red light and traffic jam on the way to the site. Upon arrival, half of the material was judged defective, necessitating a trip back to the supplier, and then the same arduous journey back to the site once the new materials were loaded. Traffic was a little better on the second round but the flat tire and subsequent repair caused as much if not more delay than the first trip. In the final analysis: A) The project activity of Material Delivery was pretty close to the optimistic estimate. B) The project activity of Material Delivery was pretty close to the most likely estimate. C) The project activity of Material Delivery had a much higher variance than anticipated. D) The project activity of Material Delivery was pretty close to the pessimistic estimate.
A
33) An activity has an optimistic time estimate of 25 days, a most likely estimate of 29 days, and a pessimistic estimate of 34 days. What is the expected duration of the activity? A) Less than 31 days but greater than or equal to 29 days B) Less than 29 days but greater than or equal to 27 days C) Less than 27 days but greater than or equal to 25 days D) Less than 25 days
D
34) An activity has an optimistic time estimate of 17 days, a most likely estimate of 23 days, and a pessimistic estimate of 37 days. What is the variance of the activity? A) 3.33 B) 6.66 C) 9.99 D) 11.11
A
35) An activity has an optimistic time estimate of 17 days, a most likely estimate of 22 days, and a pessimistic estimate of 32 days. What is the expected duration of the activity? A) 22.83 days B) 23.67 days C) 24.33 days D) 25.17 days
A
36) An activity has an optimistic time estimate of 12 days, a most likely estimate of 16 days, and a pessimistic estimate of 22 days. What is the expected standard deviation of the activity? A) Between 1 and 2 days B) Between 2 and 3 days C) Between 3 and 4 days D) Between 4 and 5 days
A
37) An activity has a pessimistic time that is four times as long as its most likely time and six times as long as its optimistic time. If the activity variance is 12, what is the expected time? A) About 8 days B) About 9 days C) About 10 days D) About 11 days
C
38) Activity Z has estimates a = 5, b = 12, m = 7; activity X has estimates a = 5, b = 11, m = 6; and activity Y has estimates a = 3, b = 11, m = 8. Which of the following statements is BEST? A) Activity X is longer than Activity Y. B) Activity X has a higher standard deviation than Activity Z. C) Activity Z is shorter than Activity Y. D) Activity Y has a smaller variance than Activity Z.
T
44) In assigning a value for the most pessimistic (b) duration, the project manager should estimate the duration of the activity to have a 99% likelihood that it will take b or less amount of time.
T
46) Laddering is a technique that allows the project manager to redraw the network to more closely sequence project subtasks to make the overall network sequence more efficient.
F
47) Hammock activities break a task into greater levels of detail so that each task is represented as two or more subtasks that each have their own duration and precedence requirements.
A
6) Serial activities are those that: A) Flow from one to the next in sequence. B) Have sequential numbers. C) Have the same numbers. D) Should be performed simultaneously.
B
7) Concurrent activities are: A) Activities that must be done one after the other. B) Activities that can be performed at the same time. C) Activities that use labor from the same group of workers. D) Activities that use resources from the same resource pool.
B
77) The amount of time an activity may be delayed from its early start without delaying the finish of the project is the: A) Delay. B) Float. C) Late start. D) Late finish.
C
78) The least amount of float is found: A) In a resource-limited schedule. B) After a burst activity. C) On the critical path. D) After a merge activity.
T
87) Activity float is the difference between the late finish and early finish for the activity in question.
F
9) A backward pass is performed when it is necessary to undo some work that has been performed in order to complete it properly.
D
98) One approach to reducing project length would be to: A) Convert parallel paths to be serial. B) Convert merge activities to burst activities. C) Use hammock activities in place of multiple activities. D) Eliminate tasks on the critical path.
A
99) A project's duration can be reduced by: A) Shortening the duration of critical path tasks. B) Adding tasks to the critical path. C) Adding shorter routes around the critical path. D) Completing the backward pass first.
D
https://i.imgur.com/7tDSEpW.png 54) What is the late start time for Activity B given the activity times and precedence requirements shown in the table? A) 11 B) 9 C) 7 D) 5
A
https://i.imgur.com/898pJZ2.png 19) Activities C, D, and E in the project represented by the network are to be hammocked. What is the activity length of the hammock activity? A) 20 B) 16 C) 13 D) 11
A
https://i.imgur.com/DY93aMQ.png 82) Use the information in the table to determine the slack time for Activity B. A) 6 days B) 4 days C) 2 days D) 0 days
A
https://i.imgur.com/DY93aMQ.png 83) What is the slack time for activity E? A) 0 days B) 1 day C) 2 days D) 4 days
A
https://i.imgur.com/E8LfaDw.png 71) A project has the precedence requirements and activity durations shown in the table. After he draws the network, the project manager decides that activities H and I can be represented by a hammock activity. What are the early start and late finish times associated with this hammock activity? A) 13, 36 B) 13, 24 C) 24, 36 D) 7, 36
D
https://i.imgur.com/Ed8GwEF.png 69) A gentleman farmer maniacally works on academic projects to raise funds for his true passion, farming. He has identified seven tasks and developed three time estimates (all in days) of the next big project on the farm, replacing the fence at the comedy pasture. Tasks, precedence requirements, and time estimates are shown in the table. What is the late finish for the Plant Posts activity? A) 13.3 days B) 8 days C) 20.83 days D) 22 days
A
https://i.imgur.com/FXc0u9I.png 39) Project Test Bank is composed of activities we will refer to as A, B, C, and D for convenience (and lack of creativity). Durations and precedence requirements are shown in the table. Each of these activities can be conveniently laddered into two sub-activities of equal duration. The first half of each activity serves as the predecessor to its second half and the first half of the original following activity. What is the expected completion time of the laddered project? A) 34 B) 38 C) 42 D) 48
B
https://i.imgur.com/FXc0u9I.png 40) Project Test Bank is composed of activities we will refer to as A, B, C, and D for convenience (and lack of creativity). Durations and precedence requirements are shown in the table. Each of these activities can be conveniently laddered into two sub-activities of equal duration. The first half of each activity serves as the predecessor to its second half and the first half of the original following activity. What is the expected completion time of the laddered project? A) 34 B) 38 C) 42 D) 48
B
https://i.imgur.com/Fr8ONEK.png 56) What is the late finish time for Activity D given the activity times and precedence requirements shown in the table? A) 14 B) 13 C) 12 D) 11
C
https://i.imgur.com/Pdz4Cwq.png 12) Network logic suggests that: A) Activity D can start any time. B) Activity A must be complete before Activity B can be done. C) Activities A, B and C must be complete before Activity D can be done. D) Activity C must begin before Activity B begins.
A
https://i.imgur.com/WwA06cO.png 89) A gentleman farmer maniacally works on academic projects to raise funds for his true passion, farming. He has identified seven tasks and developed three time estimates (all in days) of the next big project on the farm, replacing the fence at the comedy pasture. Tasks, precedence requirements, and time estimates are shown in the table. What is the probability that the project is completed in 31 days? A) 0.055 B) 0.092 C) 0.125 D) 0.187
B
https://i.imgur.com/WwA06cO.png 90) A gentleman farmer maniacally works on academic projects to raise funds for his true passion, farming. He has identified seven tasks and developed three time estimates (all in days) of the next big project on the farm, replacing the fence at the comedy pasture. Tasks, precedence requirements, and time estimates are shown in the table. What is the probability that the project takes more than 34 days? A) 0.788 B) 0.212 C) 0.945 D) 0.055
B
https://i.imgur.com/apfJq0i.png 14) Based on the activity network pictured, what is the BEST statement? A) Activity C is a burst activity. B) Activity E has one predecessor, Activity B. C) Activity A and Activity C are merge activities. D) There are no serial activities in this network.
C
https://i.imgur.com/mCDPbSv.png 95) Activities C, D, and E in the project represented by the network are to be hammocked. What are the late start and early finish times of the hammock activity? A) 6, 24 B) 6, 26 C) 8, 24 D) 8, 26
D
https://i.imgur.com/ma3Wkgq.png 70) A project has the precedence requirements and activity durations shown in the table. After he draws the network, the project manager decides that activities B, C, and D can be represented by a hammock activity. What are the early start and late finish times associated with this hammock activity? A) 11, 30 B) 7, 24 C) 11, 24 D) 7, 36
B
https://i.imgur.com/uOpLfXU.png 81) What is the float start time for Activity C given the activity times and precedence requirements shown in the table? A) 1 B) 2 C) 3 D) 4
B
https://i.imgur.com/usQrSCq.png 80) What is the slack time for Activity D given the activity times and precedence requirements shown in the table? A) 2 B) 1 C) 0 D) 3
B
https://i.imgur.com/wK2rm00.png 96) A project has the precedence requirements and activity durations shown in the table. After he draws the network, the project manager decides to represent a few activities by a hammock activity. Which is a legitimate hammock activity for this project? A) Combine activities A, B, C B) Combine activities B, E, H C) Combine activities E, F D) Combine activities G, H, I
C
https://i.imgur.com/y1IKBTR.png 97) A project has the precedence requirements and activity durations shown in the table. After he draws the network, the project manager decides that activities E and F can be represented by a hammock activity. What are the duration and the early start time associated with this hammock activity? A) 13, 36 B) 7, 0 C) 13, 7 D) 7, 14
C
https://i.imgur.com/z2NaKc6.png 63) Use the network diagram and activity lengths in the nodes to determine the early start time for activity D. A) 8 B) 13 C) 14 D) 21
D
https://i.imgur.com/z2NaKc6.png 64) Use the network diagram and activity lengths in the nodes to determine the late start time for activity F. A) 21 B) 24 C) 26 D) 23
C
https://i.imgur.com/z2NaKc6.png 66) Use the network diagram and activity lengths in the nodes to determine the late finish time for activity C. A) 12 B) 13 C) 14 D) 15
C
https://i.imgur.com/z2NaKc6.png 67) Use the network diagram and activity lengths in the nodes to determine the early start time for activity D. A) 8 B) 13 C) 14 D) 21
A
https://i.imgur.com/zz6Gwk8.png 59) Use the information in the table to determine the late start time for Activity E. A) Day 23 B) Day 26 C) Day 32 D) Day 17
B
https://i.imgur.com/zz6Gwk8.png 60) Use the information in the table to determine the early start time for Activity B. A) Day 10 B) Day 8 C) Day 9 D) Day 11
