ISYE6644 (Simulation) Midterm 1 QUESTIONS WITH ANSWERS

ISYE6644 (Simulation) Midterm 1 |\ |\ |\ |\




QUESTIONS WITH ANSWERS |\ |\




What are some characteristics of simulation models? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\



ANSWERS ✔✔1. Discrete (vs. continuous) |\ |\ |\ |\




2. Stochastic (vs. deterministic)
|\ |\ |\




3. Dynamic (vs. static)
|\ |\ |\




What is simulation? - CORRECT ANSWERS ✔✔Simulation is the
|\ |\ |\ |\ |\ |\ |\ |\ |\



imitation of a real-world process of system over time.
|\ |\ |\ |\ |\ |\ |\ |\




Simulation involves the generation of an artificial history to draw
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\



inferences concerning the operating characteristics of the real
|\ |\ |\ |\ |\ |\ |\ |\



system that is represented.
|\ |\ |\




What is simulation good for? - CORRECT ANSWERS ✔✔1.
|\ |\ |\ |\ |\ |\ |\ |\ |\



Describe / analyze real or conceptual system behavior.
|\ |\ |\ |\ |\ |\ |\




2. Ask "what if" questions.
|\ |\ |\ |\




3. Aid in system design and optimization
|\ |\ |\ |\ |\ |\




4. Can simulate almost anything
|\ |\ |\ |\

,What are the reasons to simulate? - CORRECT ANSWERS ✔✔1.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\



Will the system accomplish its goals?
|\ |\ |\ |\ |\




2. Current system won't accomplish its goals, now what?
|\ |\ |\ |\ |\ |\ |\ |\




3. Need incremental improvement.
|\ |\ |\




4. Create a specification or action plan
|\ |\ |\ |\ |\ |\




5. Solve a problem, like a bottleneck.
|\ |\ |\ |\ |\ |\




6. Resolve disputes
|\ |\




7. Sell an idea
|\ |\ |\




What are the advantages of simulation? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\



✔✔1. Can study models too complicated for analytical / numerical
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\



treatment
2. Study detailed relations that might be lost in the analytical or
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\



numerical treatment |\




3. Use as a basis for experimental studies of systems
|\ |\ |\ |\ |\ |\ |\ |\ |\




4. Use to check results and give credibility to conclusions obtained
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\



by other methods.
|\ |\




5. Reduce design blunders
|\ |\ |\




6. Really nice demo method
|\ |\ |\ |\




7. (sometimes) very easy
|\ |\ |\

, What are the disadvantages of simulation? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\



✔✔1. Sometimes not so easy |\ |\ |\ |\




2. Sometimes very time consuming / costly
|\ |\ |\ |\ |\ |\




3. Simulations give "random" output (and lots of misinterpretation
|\ |\ |\ |\ |\ |\ |\ |\ |\



of results is possible)
|\ |\ |\




4. To do a certain problem, better methods than simulation may
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\



exist


We are interested in modeling the arrival and service process at the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\



local McBurger Queen burger joint. Customers come in every once
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\



in a while, stand in line, eventually get served, and off they go.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\



Generally speaking, what kind of model are we talking about here?
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\



(More than one answer below may be right.)
|\ |\ |\ |\ |\ |\ |\




A) Discrete
|\




B) Continuous
|\




C) Stochastic
|\




D) Deterministic - CORRECT ANSWERS ✔✔(a) (because events
|\ |\ |\ |\ |\ |\ |\ |\



such as arrivals and service completions only happen once in a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\



while, as opposed to continuously); and (c) (because customer
|\ |\ |\ |\ |\ |\ |\ |\ |\



arrival times, service times, shift changes, etc., are all random).
|\ |\ |\ |\ |\ |\ |\ |\ |\




Which of the following can be regarded as advantages of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\



simulation? (More than one answer below may be right.) |\ |\ |\ |\ |\ |\ |\ |\