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12
Simulation
MULTIPLE CHOICE
1.
A simulation model uses the mathematical expressions and logical relationships of the
a.
real system.
b.
computer model.
c.
performance measures.
d.
estimated inferences.
ANSWER:
a
TOPIC:
Introduction
2.
Values for the probabilistic inputs to a simulation
a.
are selected by the decision maker.
b.
are controlled by the decision maker.
c.
are randomly generated based on historical information.
d.
are calculated by fixed mathematical formulas.
ANSWER:
c
TOPIC:
Introduction
3.
A quantity that is difficult to measure with certainty is called a
a.
risk analysis.
b.
project determinant.
c.
probabilistic input.
d.
profit/loss process.
ANSWER:
c
TOPIC:
Risk analysis
4.
A value for probabilistic input from a discrete probability distribution
a.
is the value given by the RAND() function.
b.
is given by matching the probabilistic input with an interval of random numbers.
c.
is between 0 and 1.
d.
must be nonnegative.
ANSWER:
b
TOPIC:
Simulation approach
1
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Chapter 12
Simulation
5.
The number of units expected to be sold is uniformly distributed between 300 and 500.
If r is a random
number between 0 and 1, then the proper expression for sales is
a.
200(r)
b.
r + 300
c.
300 + 500(r)
d.
300 + r(200)
ANSWER:
d
TOPIC:
Simulation approach
6.
When events occur at discrete points in time
a.
a simulation clock is required.
b.
the simulation advances to the next event.
c.
the model is a discreteevent simulation.
d.
All of the alternatives are correct.
ANSWER:
d
TOPIC:
Discreteevent simulation
7.
If customer 2 has a service time of 1.6, and if customer 3 has an interarrival time of 1.1 and a service
time of 2.3, when will customer 3’s service be completed?
a.
5.0
b.
3.9
c.
3.4
d.
There is not enough information to answer.
ANSWER:
d
TOPIC:
Waiting line simulation
8.
Common features of simulationsgenerating values from probability distributions, maintaining records,
recording data and summarizing resultsled to the development of
a.
Excel and Lotus.
b.
BASIC, FORTRAN, PASCAL, and C.
c.
GPSS, SIMSCRIPT, SLAM, and Arena
d.
LINDO and The Management Scientist
ANSWER:
c
TOPIC:
Computer implementation
9.
In order to verify a simulation model
a.
compare results from several simulation languages.
b.
be sure that the procedures for calculations are logically correct.
c.
confirm that the model accurately represents the real system.
d.
run the model long enough to overcome initial startup results.
ANSWER:
b
TOPIC:
Verification and validation
10.
Simulation
a.
does not guarantee optimality.
b.
is flexible and does not require the assumptions of theoretical models.
c.
allows testing of the system without affecting the real system.
d.
All of the alternatives are correct.
ANSWER:
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 Spring '11
 ElHelbawy

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