Question 1

One responsibility of a project manager is to make sure that the project meets its quality goals.

Accepted Answer

A) True 
 B)False  True

Question 2

EllisDon work with all of the following except

Accepted Answer

A)  workers. 
B)  sub-contractors. 
C)  construction professionals. 
D)  engineers. 
E)  EllisDon works with all of the above. 
A)  workers. 
B)  sub-contractors. 
C)  construction professionals. 
D)  engineers. 
E)  EllisDon works with all of the above. A

Question 3

Which of the following statements regarding PERT times is true?

Accepted Answer

A)  The expected time is an estimate of the time an activity will require if everything goes as planned. 
B)  The optimistic time estimate is an estimate of the maximum time an activity will require. 
C)  The expected time estimate is calculated as t = (a + 4m + b)/6. 
D)  The pessimistic time estimate is an estimate of the minimum time an activity will require. 
E)  The most likely time estimate is an estimate of the maximum time an activity will require. 
A)  The expected time is an estimate of the time an activity will require if everything goes as planned. 
B)  The optimistic time estimate is an estimate of the maximum time an activity will require. 
C)  The expected time estimate is calculated as t = (a + 4m + b)/6. 
D)  The pessimistic time estimate is an estimate of the minimum time an activity will require. 
E)  The most likely time estimate is an estimate of the maximum time an activity will require. C

Question 4

The ________ is the computed longest time path(s) through a network.

Accepted Answer

The answer of The ________ is the computed longest time...

Question 5

A PERT project has 45 activities, 19 of which are on the critical path. The estimated time for the critical path is 120 days. The sum of all activity variances is 64, while the sum of variances along the critical path is 36. The probability that the project can be completed between days 108 and 120 is

Accepted Answer

A)  -2.00. 
B)  0.0227. 
C)  0.1058. 
D)  0.4773. 
E)  0.9773. 
A)  -2.00. 
B)  0.0227. 
C)  0.1058. 
D)  0.4773. 
E)  0.9773.

Question 6

The expected activity time in PERT analysis is calculated as

Accepted Answer

A)  the simple average of the optimistic, pessimistic, and most likely times. 
B)  the weighted average of a, m, and b, with m weighted 4 times as heavily as a and b. 
C)  the sum of the optimistic, pessimistic, and most likely times. 
D)  the sum of the optimistic, pessimistic, and most likely times, divided by six. 
E)  the sum of the activity variances, divided by six. 
A)  the simple average of the optimistic, pessimistic, and most likely times. 
B)  the weighted average of a, m, and b, with m weighted 4 times as heavily as a and b. 
C)  the sum of the optimistic, pessimistic, and most likely times. 
D)  the sum of the optimistic, pessimistic, and most likely times, divided by six. 
E)  the sum of the activity variances, divided by six.

Question 7

The ________ distribution is used by PERT analysis to calculate expected activity times and variances.

Accepted Answer

A)  Normal 
B)  Beta 
C)  Alpha 
D)  Gaussian 
E)  Binomial 
A)  Normal 
B)  Beta 
C)  Alpha 
D)  Gaussian 
E)  Binomial

Question 8

The network below represents a project being analyzed by Critical Path Methods. Activity durations are indicated on the network.   a. Identify the activities on the critical path.
b. What is the duration of the critical path?
c. Calculate the amount of slack time at activity H.
d. If activity I were delayed by ten time units, what would be the impact on the project duration?

Accepted Answer

(a) Critical activities are A-

Question 9

Contract requirements state that a project must be completed within 180 working days, or it will incur penalties for late completion. Analysis of the activity network reveals an estimated project time of 145 working days with a project variance of 400. What is the probability that the project will be completed before the late-payment deadline?

Accepted Answer

A)  0.0401 
B)  0.4599 
C)  0.8056 
D)  0.9599 
E)  near 1.0000, or almost certain 
A)  0.0401 
B)  0.4599 
C)  0.8056 
D)  0.9599 
E)  near 1.0000, or almost certain

Question 10

Three critical path activities are candidates for crashing on a CPM network. Activity details are in the table below.
 $$\begin{array} { | c | c | c | c | c | } 
\hline \text { Activity } & \text { Normal Time } & \text { Normal Cost } & \begin{array} { c } 
\text { Crash } \
\text { Duration }
\end{array} & \text { Crash Cost } \
\hline \text { A } & 9 \text { days } & \$ 8,000 & 7 \text { days } & \$ 12,000 \
\hline \text { B } & 5 \text { days } & \$ 2,000 & 3 \text { days } & \$ 10,000 \
\hline \text { C } & 12 \text { days } & \$ 9,000 & 11 \text { days } & \$ 12,000 \
\hline
\end{array}$$ a. What is the crash cost per unit time for activity A?
b. What is the crash cost per unit time for activity B?
c. Which activity should be crashed first to cut one day from the project's duration; how much is added to project cost?
d. Which activity should be the next activity crashed to cut a second day from the project's duration; how much is added to project cost?
e. Assuming no other paths become critical, how much can this project be shortened at what total added cost?

Accepted Answer

(a) $2,000; (b) $4,0

Question 11

Consider the network described in the table below.
 $$\begin{array} { | c | c | c | c | c | } 
\hline \text { Activity } & \begin{array} { c } 
\text { Immediate } \
\text { Predecessor(s) }
\end{array} & \text { Pessimistic } & \text { Probable } & \text { Optimistic } \
\hline \text { J } & - - & 15 & 10 & 8 \
\hline \text { K } & - - & 9 & 8 & 7 \
\hline \text { L } & \text { J } & 10 & 6 & 5 \
\hline \text { M } & \text { J } & 3 & 3 & 3 \
\hline \text { N } & \text { K, M } & 9 & 5 & 1 \
\hline \text { O } & \text { K, M } & 10 & 7 & 4 \
\hline \text { P } & \text { L, N } & 10 & 8 & 3 \
\hline
\end{array}$$ a. Calculate the expected duration of each activity.
b. Calculate the expected duration and variance of the critical path.
c. Calculate the probability that the project will be completed in fewer than 30 time units.

Accepted Answer

(a) See table below.
(b) Tasks J-M-N-P a

Question 12

A project being analyzed by PERT has 60 activities, 13 of which are on the critical path. If the estimated time along the critical path is 214 days with a project variance of 100, the probability that the project will take 224 days or more to complete is

Accepted Answer

A)  near zero. 
B)  0.0126. 
C)  0.1587. 
D)  0.8413. 
E)  2.14. 
A)  near zero. 
B)  0.0126. 
C)  0.1587. 
D)  0.8413. 
E)  2.14.

Question 13

A project being analyzed by PERT has 50 activities, 12 of which are on the critical path. If the estimated time along the critical path is 176 days with a project variance of 144, the probability that the project will take 194 days or more to complete is

Accepted Answer

A)  near zero. 
B)  0.0126. 
C)  0.0668. 
D)  0.9332. 
E)  2.00. 
A)  near zero. 
B)  0.0126. 
C)  0.0668. 
D)  0.9332. 
E)  2.00.

Question 14

Describe in words how to calculate a project's standard deviation. What assumption allows that calculation to be accurate?

Accepted Answer

Add the variances of the activ

Question 15

The critical path for the network activities shown below is ________ with duration ________. $$\begin{array} { | c | c | c | } 
\hline \text { Activity } & \text { Duration } & \begin{array} { c } 
\text { Immediate } \
\text { Predecessors }
\end{array} \
\hline \text { A } & 10 & - - \
\hline \text { B } & 8 & - - \
\hline \text { C } & 2 & \text { A } \
\hline \text { D } & 4 & \text { A } \
\hline \text { E } & 5 & \text { B, C, D } \
\hline
\end{array}$$

Accepted Answer

A)  A-C; 12 
B)  A-D-E; 19 
C)  B-E; 13 
D)  A-B-C-D-E; 29 
E)  A-B-C; 20 
A)  A-C; 12 
B)  A-D-E; 19 
C)  B-E; 13 
D)  A-B-C-D-E; 29 
E)  A-B-C; 20

Question 16

Which of the following statements regarding CPM is true?

Accepted Answer

A)  The critical path is the shortest of all paths through the network. 
B)  The critical path is that set of activities that has positive slack. 
C)  Some networks have no critical path. 
D)  All activities on the critical path have their LS equal to the maximum EF of all immediate predecessors. 
E)  The critical path is that set of activities that has negative slack. 
A)  The critical path is the shortest of all paths through the network. 
B)  The critical path is that set of activities that has positive slack. 
C)  Some networks have no critical path. 
D)  All activities on the critical path have their LS equal to the maximum EF of all immediate predecessors. 
E)  The critical path is that set of activities that has negative slack.

Question 17

How is the expected completion time of a project activity, and of a PERT project, computed?

Accepted Answer

The expected completion time of a projec

Question 18

A local project being analyzed by PERT has 42 activities, 13 of which are on the critical path. If the estimated time along the critical path is 105 days with a project variance of 25, the probability that the project will be completed in 95 days or less is

Accepted Answer

A)  -0.4. 
B)  0.0228. 
C)  0.3444. 
D)  0.9772. 
E)  4.2. 
A)  -0.4. 
B)  0.0228. 
C)  0.3444. 
D)  0.9772. 
E)  4.2.

Question 19

A network has been crashed to the point where all activities are critical. Additional crashing

Accepted Answer

A)  is unnecessary. 
B)  is impossible. 
C)  is prohibitively expensive. 
D)  may require crashing multiple tasks simultaneously. 
E)  can be done, but all critical tasks must be reduced in duration. 
A)  is unnecessary. 
B)  is impossible. 
C)  is prohibitively expensive. 
D)  may require crashing multiple tasks simultaneously. 
E)  can be done, but all critical tasks must be reduced in duration.

Question 20

The difference between AON and AOA networks is that

Accepted Answer

A)  AOA networks often require dummy activities, while AON networks sometimes add dummy activities for convenience. 
B)  nodes consume no resources or time in AOA networks. 
C)  both are acceptable in practice, however Microsoft Project uses AON. 
D)  in AON nodes designate activities, in AOA arrows designate activities. 
E)  All of the above are true. 
A)  AOA networks often require dummy activities, while AON networks sometimes add dummy activities for convenience. 
B)  nodes consume no resources or time in AOA networks. 
C)  both are acceptable in practice, however Microsoft Project uses AON. 
D)  in AON nodes designate activities, in AOA arrows designate activities. 
E)  All of the above are true.

Exam 3: Project Management

One responsibility of a project manager is to make sure that the project meets its quality goals.

EllisDon work with all of the following except

Which of the following statements regarding PERT times is true?

The ________ is the computed longest time path(s) through a network.

The expected activity time in PERT analysis is calculated as

The ________ distribution is used by PERT analysis to calculate expected activity times and variances.

A project being analyzed by PERT has 60 activities, 13 of which are on the critical path. If the estimated time along the critical path is 214 days with a project variance of 100, the probability that the project will take 224 days or more to complete is

A project being analyzed by PERT has 50 activities, 12 of which are on the critical path. If the estimated time along the critical path is 176 days with a project variance of 144, the probability that the project will take 194 days or more to complete is

Describe in words how to calculate a project's standard deviation. What assumption allows that calculation to be accurate?

The critical path for the network activities shown below is ________ with duration ________. Activity Duration Immediate Predecessors A 10 -- B 8 -- C 2 A D 4 A E 5 B, C, D

Which of the following statements regarding CPM is true?

How is the expected completion time of a project activity, and of a PERT project, computed?

A local project being analyzed by PERT has 42 activities, 13 of which are on the critical path. If the estimated time along the critical path is 105 days with a project variance of 25, the probability that the project will be completed in 95 days or less is

A network has been crashed to the point where all activities are critical. Additional crashing

The difference between AON and AOA networks is that

Operations and Productivity

Operations Strategy in a Global Environment

Forecasting

Design of Goods and Services

Managing Quality

Process Strategy and Sustainability

Location Strategies

Layout Strategies

Human Resources, Job Design, and Work Measurement

Supply-Chain Management

Inventory Management

Aggregate Planning

Material Requirements Planning Mrp and Erp

Short-Term Scheduling

Lean Operations

Maintenance and Reliability

Decision-Making Tools

Linear Programming

Transportation Models

Waiting-Line Models

Learning Curves

Simulation

Supply Chain Management Analytics

Sustainability in the Supply Chain

Statistical Process Control

Capacity and Constraint Management

Filters

The critical path for the network activities shown below is with duration . Activity Duration Immediate Predecessors A 10 -- B 8 -- C 2 A D 4 A E 5 B, C, D