ISYE 6644 Simulation Midterm Test 1
2026/2027 – Questions and Answers |
100% Verified | Complete Verified
Answers – Pass Guaranteed – Already
Graded A+ Instant Download pdf
Core Concepts & Simulation Modeling
1. What is simulation?
Answer: Imitation of a real-world process or system over time. It
involves generating an artificial history to draw inferences about
the real system.
2. What are the key characteristics of simulation models?
Answer: They can be Discrete vs. Continuous, Stochastic vs.
Deterministic, and Dynamic vs. Static.
3. TRUE or FALSE? Discrete-event simulations are particularly
suitable for analyzing continuous-flow phenomena, such as
the velocity and altitude of an aircraft as it comes in for a
landing.
Answer: False. Discrete-event simulation is not suitable for
continuous-flow phenomena like aircraft velocity. Continuous
models are better for this.
, 4. Which simulation approach is primarily used by Arena?
Answer: Process-Interaction.
5. What is the "Process-Interaction" worldview?
Answer: It involves considering a generic entity and the sequence
of events and activities (processes) it undergoes as it moves
through the system. Multiple entities interact as they compete for
resources.
6. Which time-advance mechanism is primarily used in
continuous-time models involving differential equations?
Answer: Fixed-Increment time advance.
7. Which time-advance mechanism is typically used in
queueing models involving customer arrivals, services, and
departures?
Answer: Next-Event time advance.
8. What does a Future Events List (FEL) contain?
Answer: All known upcoming events, including arrival times,
departure times, and machine breakdown times.
9. TRUE or FALSE? In Arena, the modeler is responsible for
maintaining the language's Future Events List.
Answer: False. Arena manages the FEL internally.
10. What is the primary advantage of the Process-Interaction
approach over Event-Scheduling?
, Answer: It is generally considered easier and reduces
programmatic complexity compared to Event-Scheduling.
💻 Model Building in Arena
11. What is the primary function of the "Create" module in
Arena?
Answer: It is used to generate customer arrivals into the
simulation.
12. What fields are in the "Process" Module?
Answer: Name, Type, Logic, and Delay Type.
13. What does the "Batch" module do?
Answer: It combines multiple entities (e.g., customers) into one
super-entity.
14. What does the "Separate" module do?
Answer: It duplicates a single entity or splits multiple entities that
have been combined in a Batch module.
15. What is the function of the "Assign" module?
Answer: It is used to change attributes and variables (e.g., entity
pictures, or values like WIP).
16. What is the difference between an "Attribute" and a
"Variable" in Arena?
, Answer: Attributes are specific to each individual entity (e.g., a
customer's service time). Variables are global and, if changed, are
updated everywhere in the model (e.g., Work-In-Process/WIP).
17. What is an "Internal Variable" in Arena?
Answer: An internal variable is a system variable that Arena keeps
track of and updates continuously, such as TNOW (current
simulation time) or NQ(Queue_Name) (number of customers in a
specific queue).
18. How can you model failures in Arena?
Answer: A good way is to use
the Resource and Failure spreadsheets in conjunction with each
other.
19. What are the types of failure rules in Arena?
Answer: Ignore (complete service, then repair), Wait (complete
service, delay repair), and Preempt (stop service immediately,
repair, then resume).
20. What does the "Record" module do?
Answer: It collects statistics when an entity passes through the
module.
📊 Probability & Statistics Fundamentals
21. What is the probability of any event P(A)?
2026/2027 – Questions and Answers |
100% Verified | Complete Verified
Answers – Pass Guaranteed – Already
Graded A+ Instant Download pdf
Core Concepts & Simulation Modeling
1. What is simulation?
Answer: Imitation of a real-world process or system over time. It
involves generating an artificial history to draw inferences about
the real system.
2. What are the key characteristics of simulation models?
Answer: They can be Discrete vs. Continuous, Stochastic vs.
Deterministic, and Dynamic vs. Static.
3. TRUE or FALSE? Discrete-event simulations are particularly
suitable for analyzing continuous-flow phenomena, such as
the velocity and altitude of an aircraft as it comes in for a
landing.
Answer: False. Discrete-event simulation is not suitable for
continuous-flow phenomena like aircraft velocity. Continuous
models are better for this.
, 4. Which simulation approach is primarily used by Arena?
Answer: Process-Interaction.
5. What is the "Process-Interaction" worldview?
Answer: It involves considering a generic entity and the sequence
of events and activities (processes) it undergoes as it moves
through the system. Multiple entities interact as they compete for
resources.
6. Which time-advance mechanism is primarily used in
continuous-time models involving differential equations?
Answer: Fixed-Increment time advance.
7. Which time-advance mechanism is typically used in
queueing models involving customer arrivals, services, and
departures?
Answer: Next-Event time advance.
8. What does a Future Events List (FEL) contain?
Answer: All known upcoming events, including arrival times,
departure times, and machine breakdown times.
9. TRUE or FALSE? In Arena, the modeler is responsible for
maintaining the language's Future Events List.
Answer: False. Arena manages the FEL internally.
10. What is the primary advantage of the Process-Interaction
approach over Event-Scheduling?
, Answer: It is generally considered easier and reduces
programmatic complexity compared to Event-Scheduling.
💻 Model Building in Arena
11. What is the primary function of the "Create" module in
Arena?
Answer: It is used to generate customer arrivals into the
simulation.
12. What fields are in the "Process" Module?
Answer: Name, Type, Logic, and Delay Type.
13. What does the "Batch" module do?
Answer: It combines multiple entities (e.g., customers) into one
super-entity.
14. What does the "Separate" module do?
Answer: It duplicates a single entity or splits multiple entities that
have been combined in a Batch module.
15. What is the function of the "Assign" module?
Answer: It is used to change attributes and variables (e.g., entity
pictures, or values like WIP).
16. What is the difference between an "Attribute" and a
"Variable" in Arena?
, Answer: Attributes are specific to each individual entity (e.g., a
customer's service time). Variables are global and, if changed, are
updated everywhere in the model (e.g., Work-In-Process/WIP).
17. What is an "Internal Variable" in Arena?
Answer: An internal variable is a system variable that Arena keeps
track of and updates continuously, such as TNOW (current
simulation time) or NQ(Queue_Name) (number of customers in a
specific queue).
18. How can you model failures in Arena?
Answer: A good way is to use
the Resource and Failure spreadsheets in conjunction with each
other.
19. What are the types of failure rules in Arena?
Answer: Ignore (complete service, then repair), Wait (complete
service, delay repair), and Preempt (stop service immediately,
repair, then resume).
20. What does the "Record" module do?
Answer: It collects statistics when an entity passes through the
module.
📊 Probability & Statistics Fundamentals
21. What is the probability of any event P(A)?
