ISYE 6644 MIDTERM EXAM 2025

ISYE 6644 MIDTERM EXAM 2025 In Arena, a DECIDE module can route customers probabilistically or conditionally to multiple locations. - Correct Ans-True In Arena, a primitive QUEUE block can connect with a PROCESS module. - Correct Ans-False In Arena, you can pre-assign a service time as an attribute before you actually get to the server that you'll be using. - Correct Ans-True In Arena, it's perfectly OK to have a CREATE module generating one-at-a-time customer arrivals, while also having a different CREATE module with4-at-a-time customer arrivals elsewhere in the model. - Correct Ans-True In Arena, "fake" customers can be used to schedule machine breakdowns, keep track of which time period the simulation is currently in, and carry out other duties not associated with actual customers. - Correct Ans-True What is the expected value of the Arena expression EXPO(DISC(0.5,2,1,3))? - Correct Ans-2.5 Suppose there are 7 people in the line called and 2 people in the line called . What is the value of the following Arena expression? (NQ()=NQ()) + (TNOW−1) - Correct Ans-1 In Arena, the SEIZE, DELAY, RELEASE functionalities are in multiple templates. - Correct Ans-True In Arena, you can schedule failures to occur after a random number of customers have used a resource or after a random amount of time has passed. - Correct Ans-True In Arena, you are only allowed to schedule one type of failure for a particular resource - Correct Ans-False In Arena, it is possible for the resource Joey to be a member of three different resource sets - Correct Ans-True For easy display and organizational purposes, our Arena Call Center simulation is divided into several submodels. - Correct Ans-True The customer arrival pattern for our Arena Call Center simulation changes over the day and is therefore modeled as a nonhomogeneous Poisson process. - Correct Ans-True ISYE 6644 ISYE 6644 All of the Tech Support servers for our Arena Call Center simulation are equally skilled and have the same concurrent work schedules. - Correct Ans-False In Arena, what kind of module would you use to change an entity's picture? - Correct Ans-Assign In Arena, where would you find the Expressions spreadsheet - Correct Ans-Advanced Processes Panel Consider the Arena Inventory model that we did in class as a demo. Did this model allow for backlogs? YES or NO? - Correct Ans-Yes In an Arena PROCESS module, it is possible to do a DELAY without an accompanying SEIZE or RELEASE. - Correct Ans-True An Arena DECIDE module looks like a diamond. - Correct Ans-True An Activity is a wait time of unspecified length (i.e. customer wait time) - Correct Ans False Entities can be permanent (like a machine), or temporary (like a customer) - Correct Ans-True Simulation Clock always represents real time - Correct Ans-False Which modelling approach does Arena use? - Correct Ans-Process Interaction The Next-Event time advance mechanism is used for continuous-time models - Correct Ans-False Most of the programming effort involved in event scheduling comes from keeping track of the bookkeeping - Correct Ans-True In Arena, what modules generate customer arrivals, perform some action on them, then remove them from the system? - Correct Ans-Create, Process, Dispose Which Arena module allows you to remove customers from the system? - Correct Ans Dispose The Generate module can be found in the basic process template - Correct Ans-False What is the name of Arena's primary modeling approach "world view"? - Correct Ans Process Interaction Arena is a Windows based product, but there are other solutions if you do not have a PC - Correct Ans-True ISYE 6644 ISYE 6644 The Basic Process Panel contains various models that an be used to build a simple simulation - Correct Ans-True HOLD appears on the Basic Process Panel - Correct Ans-False Basic Process Panel contains both modules and spreadsheets - Correct Ans-True Create module allows you to use a variety of interarrival distributions - Correct Ans-True Delay, Seize Delay, Delay Release, and Seize Delay Release can all be found in a process module - Correct Ans-True A Process includes the process itself plus its associated queue - Correct Ans-True You can change the number of servers on duty with the Resource Spreadsheet - Correct Ans-True You can change a Queue from LIFO to FIFO with one click in the Queue spreadsheet - Correct Ans-True System Work in Progress (WIP) is an attribute - Correct Ans-False Where can you change or set a customer's picture - Correct Ans-Assign Module and Entity Spreadsheet If BarberShop is a process, what is the formula for its Queue length? - Correct Ans NQ(BarberShop.Queue) You can use the batch module to merge customers either permanently or temporarily - Correct Ans-True If you have a temporary batch, then you can use the command Split Existing Batch to reproduce entities with original attributes - Correct Ans-True If you wanted 5 runs of a simulation for 100 hours each, what would you specify in the Run Setup Menu? - Correct Ans-Replications = 5, Replication Length = 100