Question 1

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

Accepted Answer

The answer of Project Test Bank is composed of activities...

Question 2

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

Accepted Answer

The answer of Use the network diagram and activity lengths...

Question 3

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

Accepted Answer

The answer of Use the network diagram and activity lengths...

Question 4

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

Accepted Answer

The answer of Project Test Bank is composed of activities...

Question 5

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

Accepted Answer

The answer of Use the network diagram and activity lengths...

Question 6

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

Accepted Answer

Activity D can only start after the completion of its predecessor, activity C, which has a duration of 6 days. Therefore, the earliest start time for activity D would be 6 days after the start of activity C, which is 8 + 6 = 14. Therefore, the correct answer is C.

Question 7

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

Accepted Answer

Slack time for an activity is the amount of time that an activity can be delayed without affecting the total project duration. Activity B has a total duration of 16 days and its earliest start time is day 3 and earliest finish time is day 14. Therefore, its latest start time is day 9 and latest finish time is day 20. The slack time for Activity B is calculated by subtracting its duration from the difference between its latest finish time and earliest finish time. 
Slack time for Activity B = Latest finish time for Activity B - Earliest finish time for Activity B - Duration of Activity B
= 20 - 14 - 16
= 6 days. 
Therefore, the best choice is A, 6 days.

Question 8

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

Accepted Answer

The answer of What is the float start time for...

Question 9

What is the slack time for Activity B given the activity times and precedence requirements shown in the table? 
A)7
B)6
C)5
D)4

Accepted Answer

To calculate slack time, we need to first calculate the earliest start time (EST) and latest start time (LST) for each activity.

For Activity B:
EST = 2 (since it can start immediately after Activity A, which takes 2 units of time)
LST = 8 (since it must finish before Activity F, which starts at 10 and takes 2 units of time)

Slack time = LST - EST = 8 - 2 = 6

Therefore, the answer is B. Activity B has a slack time of 6 units.

Question 10

Use the information in the table to determine the late finish time for Activity B. 
A)day 17
B)day 26
C)day 20
D)day 23

Accepted Answer

The late start time for Activity B is day 16 (its early start time plus its duration), and its duration is 7 days. Therefore, the late finish time for Activity B is day 23 (its late start time plus its duration).

Question 11

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

Accepted Answer

The answer of Project Test Bank is composed of activities...

Question 12

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

Accepted Answer

The answer of Use the information in the table to...

Question 13

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

Accepted Answer

Activity D has a duration of 3 days and its latest start time (LST) is day 29. Therefore, its early finish time (EFT) can be calculated by adding the duration to the LST: 
EFT = LST + duration = 29 + 3 = 32. Therefore, the early finish time for Activity D is day 32.

Question 14

What is the slack time for activity E? 
A)1 day
B)0 days
C)2 days
D)4 days

Accepted Answer

The slack time for activity E is calculated as: 
Latest start time - Earliest start time - Duration 
= 16 - 11 - 5 
= 0 
Therefore, the answer is option B - 0 days. This means that activity E has no flexibility in its schedule and must be completed in exactly 5 days without any delay.

Question 15

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

Accepted Answer

The answer of Use the network diagram and activity lengths...

Question 16

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

Accepted Answer

The answer of Use the information in the table to...

Question 17

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

Accepted Answer

The answer of Use the network diagram and activity lengths...

Question 18

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.

Accepted Answer

Laddering can be used to break down activities into smaller, overlapping tasks, allowing paperwork to begin as early activities are completed.

Question 19

What is the slack time for Activity C given the activity times and precedence requirements shown in the table? 
A)2
B)1
C)0
D)3

Accepted Answer

The answer of What is the slack time for Activity...

Question 20

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

Accepted Answer

To find the expected completion time of the project, we need to calculate the earliest start and finish times for each task, as well as the latest start and finish times. Then we can calculate the slack time for each task, which is the amount of time it can be delayed without delaying the entire project. Finally, we add up the duration of all tasks along the critical path to get the expected completion time.

Using the table, we can create a network diagram and calculate the earliest start and finish times, as well as the latest start and finish times:

Task A: ES=0, EF=3, LS=9, LF=12
Task B: ES=3, EF=6, LS=10, LF=13
Task C: ES=6, EF=9, LS=6, LF=9
Task D: ES=9, EF=12, LS=11, LF=14
Task E: ES=12, EF=18, LS=12, LF=18
Task F: ES=12, EF=15, LS=16, LF=19
Task G: ES=18, EF=21, LS=18, LF=21

The critical path is A-D-E-G, which has a duration of 12+3+6+3=24 days. Therefore, the expected completion time of the project is 24 days.

The closest answer choice is B) 33 days.

Quiz 9: Project Scheduling: Networks, duration Estimation, and Critical Path

Use the network diagram and activity lengths in the nodes to determine the early start time for activity D.

Use the network diagram and activity lengths in the nodes to determine the late finish time for activity C.

Use the network diagram and activity lengths in the nodes to determine the late start time for activity F.

Use the network diagram and activity lengths in the nodes to determine the early start time for activity D.

Use the information in the table to determine the slack time for Activity B.

What is the float start time for Activity C given the activity times and precedence requirements shown in the table?

What is the slack time for Activity B given the activity times and precedence requirements shown in the table?

Use the information in the table to determine the late finish time for Activity B.

Use the information in the table to determine the late start time for Activity E.

Use the information in the table to determine the early finish time for Activity D.

What is the slack time for activity E?

Use the network diagram and activity lengths in the nodes to determine the early finish time for activity G.

Use the information in the table to determine the early start time for Activity B.

Use the network diagram and activity lengths in the nodes to determine the slack time for activity D.

What is the slack time for Activity C given the activity times and precedence requirements shown in the table?