ISYE 6644 MIDTERM SIMULATION EXAM NEWEST 2026/2027 | COMPLETE QUESTIONS AND CORRECT ANSWERS (VERIFIED) | GRADED A+ | BRAND NEW VERSION!!

ISYE 6644 MIDTERM SIMULATION EXAM NEWEST 2026/2027 | COMPLETE QUESTIONS AND CORRECT ANSWERS (VERIFIED) | GRADED A+ | BRAND NEW VERSION!! What is the name of Arena's primary modeling approach "world view"? A) Process-Interaction B) Event-Scheduling C) Continuous Modeling Flowchart D) Mixed Modeling E) Event-Interaction ......answer.....A) Process Interaction What sequence of Arena modules would you use to generate customer arrivals, use a server , and then have customers leave the system after they're done with the server? ......answer.....Create-Process-Dispose (ARENA) TRUE or FALSE? A Create module allows you the use a variety of customer interarrival time distributions. ......answer.....TRUE 2 | P a g e (ARENA) What is Seize-Delay-Release? ......answer.....Grab at least one resource (server), spend time getting served, and then free the server for the next customer. If you seize and the server isn't available, you may have to wait in a queue. (ARENA) TRUE or FALSE? You can a queue discipline from FIFO to LIFO with one click by using the Queue spreadsheet. ......answer.....TRUE Which property is not desirable for a good pseudo-random number generator? (a) The numbers must appear to be Unif(0,1). (b) The numbers be approximately independent. (c) We should be able to generate the PRNs very, very quickly. (d) We must be able to look up the series of PRNs from a table. (e) We can reproduce any sequence of PRNs if called upon to do so. ......answer.....(d) We must be able to look up the series of PRNs from a table. 3 | (ARENA) What is a seize-delay? ......answer.....Grab at least one resource and spend time getting served. Remember to release the server sometime later, else he gets deadlocked and a giant line will form. (ARENA) TRUE or FALSE? A process is generally considered to consist of both a resource and its associated queue. ......answer.....TRUE (ARENA) TRUE or FALSE? You can change the number of servers on duty (i.e., the capacity) for a resource using the Resource spreadsheet. ......answer.....TRUE (ARENA) What is a delay-release? ......answer.....Use a previously seize'd for a while, and then free him for the next guy to use. (ARENA) Which of the following action sequences can you find in a Process module? 4 | P a g e A) Delay B) Seize-Delay C) Delay-Release D) Seize-Delay-Release E) All of the above ......answer.....all of duh abuv What is a random device? ......answer.....Considered a lousy generator, nice randomness properties. However, Unif(0,1) sequence storage is tough so it's tough to repeat experiment. An example is flip a coin or least significant digits of atomic clock What are the most commonly used random number generators in practice today? ......answer.....Linear Congruential Generators What is the LCG general formula? ......answer.....Xi = (aXi-1 + c) mod m Ri = Xi/m 5 | What is the period in a random number generator? ......answer.....The amount of time until the LCG starts to repeat itself. Also called cycle length and you generally want a long one for a good generator. What can go wrong with LCGs? ......answer.....Something like Xi = (4Xi-1 + 2)mod8 is not full period, since it only produces even integers What are the two different types of tests for random number generators? ......answer.....Goodness-of-fit tests - are the PRNs approximately Unif(0,1) Independence tests - are the PRNs approximately independent? Type 1 error is when you reject the null hypothesis even though it is true. T/F ......answer.....True Type 2 error is when you accept the null hypothesis even though it is false. T/F ......answer.....True TRUE or FALSE?