ISYE 6644 MIDTERM EXAM | QUESTIONS &
ANSWERS Simulation and Modeling for Engineering
and Science | Georgia Tech | Latest 2026/2027 | 100%
Verified
ISYE 6644 Midterm Exam at Georgia Tech. The questions cover simulation
fundamentals, Arena modeling, pseudo-random number generation (PRNGs),
statistical tests, inverse transform method, and probability theory. Each answer
includes the correct option in bold with a detailed rationale .
SECTION 1: SIMULATION FUNDAMENTALS (Questions 1–20)
1. What is simulation?
A) Solving a model using physical/mathematical equations
B) Imitation of a real-world process or system over time
C) High-level representations of the operation of a real-world process
D) A numerical method for solving differential equations
Answer: B
Simulation is the imitation of a real-world process or system over time. It involves
the generation of an artificial history to draw inferences concerning the operating
characteristics of the real system that is represented .
,2. What is a model in the context of simulation?
A) An exact replica of a system
B) High-level representations of the operation of a real-world process or system
C) A mathematical equation with no randomness
D) A physical prototype
Answer: B
A model is a high-level representation of the operation of a real-world process or
system. It typically includes mathematical and logical relationships describing the
system .
3. Which type of model represents a customer showing up and waiting in line?
A) Continuous model
B) Discrete model
C) Stochastic model
D) Deterministic model
Answer: B
A discrete model is characterized by events that occur at distinct points in time.
Customer arrivals and departures are discrete events. Continuous models involve
variables that change continuously over time .
,4. Which type of model involves randomness (e.g., calls randomly arriving at a
call center)?
A) Deterministic model
B) Stochastic model
C) Discrete model
D) Static model
Answer: B
A stochastic model incorporates randomness or uncertainty. Calls arriving at a call
center are random events. Deterministic models have no randomness .
5. Which type of model has changing relationships between variables over time?
A) Static model
B) Dynamic model
C) Deterministic model
D) Discrete model
Answer: B
Dynamic models have changing relationships between variables over time (e.g.,
queue length over time). In static models, the relationships between variables are
fixed (e.g., V = IR) .
6. What are the three methods to "solve" a model, from easiest to hardest?
, A) Numerical, Analytical, Simulation
B) Analytical, Numerical, Simulation
C) Simulation, Analytical, Numerical
D) Numerical, Simulation, Analytical
Answer: B
Analytical models can be solved exactly with math; numerical models require
computational methods; simulation is used when models are too complex for
analytical or numerical treatment .
7. Which of the following is an ADVANTAGE of simulation?
A) Always easy to implement
B) Can study models too complicated for analytical/numerical treatment
C) Always gives non-random output
D) Always faster than analytical methods
Answer: B
Advantages of simulation include: ability to study models too complicated for
analytical/numerical treatment, ability to study detailed relations, basis for
experimental studies, reduction of design blunders, and verification of results from
other methods .
8. Which of the following is a DISADVANTAGE of simulation?
ANSWERS Simulation and Modeling for Engineering
and Science | Georgia Tech | Latest 2026/2027 | 100%
Verified
ISYE 6644 Midterm Exam at Georgia Tech. The questions cover simulation
fundamentals, Arena modeling, pseudo-random number generation (PRNGs),
statistical tests, inverse transform method, and probability theory. Each answer
includes the correct option in bold with a detailed rationale .
SECTION 1: SIMULATION FUNDAMENTALS (Questions 1–20)
1. What is simulation?
A) Solving a model using physical/mathematical equations
B) Imitation of a real-world process or system over time
C) High-level representations of the operation of a real-world process
D) A numerical method for solving differential equations
Answer: B
Simulation is the imitation of a real-world process or system over time. It involves
the generation of an artificial history to draw inferences concerning the operating
characteristics of the real system that is represented .
,2. What is a model in the context of simulation?
A) An exact replica of a system
B) High-level representations of the operation of a real-world process or system
C) A mathematical equation with no randomness
D) A physical prototype
Answer: B
A model is a high-level representation of the operation of a real-world process or
system. It typically includes mathematical and logical relationships describing the
system .
3. Which type of model represents a customer showing up and waiting in line?
A) Continuous model
B) Discrete model
C) Stochastic model
D) Deterministic model
Answer: B
A discrete model is characterized by events that occur at distinct points in time.
Customer arrivals and departures are discrete events. Continuous models involve
variables that change continuously over time .
,4. Which type of model involves randomness (e.g., calls randomly arriving at a
call center)?
A) Deterministic model
B) Stochastic model
C) Discrete model
D) Static model
Answer: B
A stochastic model incorporates randomness or uncertainty. Calls arriving at a call
center are random events. Deterministic models have no randomness .
5. Which type of model has changing relationships between variables over time?
A) Static model
B) Dynamic model
C) Deterministic model
D) Discrete model
Answer: B
Dynamic models have changing relationships between variables over time (e.g.,
queue length over time). In static models, the relationships between variables are
fixed (e.g., V = IR) .
6. What are the three methods to "solve" a model, from easiest to hardest?
, A) Numerical, Analytical, Simulation
B) Analytical, Numerical, Simulation
C) Simulation, Analytical, Numerical
D) Numerical, Simulation, Analytical
Answer: B
Analytical models can be solved exactly with math; numerical models require
computational methods; simulation is used when models are too complex for
analytical or numerical treatment .
7. Which of the following is an ADVANTAGE of simulation?
A) Always easy to implement
B) Can study models too complicated for analytical/numerical treatment
C) Always gives non-random output
D) Always faster than analytical methods
Answer: B
Advantages of simulation include: ability to study models too complicated for
analytical/numerical treatment, ability to study detailed relations, basis for
experimental studies, reduction of design blunders, and verification of results from
other methods .
8. Which of the following is a DISADVANTAGE of simulation?
