ISYE 6644 MIDTERM 2 QUESTIONS & ANSWERS(GRADED A+)

ISYE 6644 MIDTERM 2 QUESTIONS &
ANSWERS(GRADED A+)

True or False? You can pre-assign a service time as an attribute before you actually
get to the server that you'll be using - ANSWERTrue

True or False? If you have Create module generating one-at-a-time customer
arrivals, then it is not possible to use a different Create module with 4-at-a-time
customer arrivals. - ANSWERFalse

True or False? 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. - ANSWERTrue

Which module/spreadsheet is NOT in the Advanced Process panel? -
ANSWERProcess Model
- The process model is in the Basic Process panel.

Advanced Process Panel
-Seize module
-Delay module
-Release module
-Expression spreadsheets
-Failure spreadsheets

Consider a vanilla (s,S) = (5,12) inventory policy. If my inventory slips to 3, how
many items do I order? - ANSWERSince 3 < s, we order S - 3 then 12-3 = 9

What is the value of this logic expression ((1 == 1) * 10) + ((1==0) * 5)? -
ANSWERSince "1==1" is true and "1==0" is false. we have

((1==1) * 10) + ((1==0) * 5) = (1*10) + (0*5) = 10

True or False? You can find individual Seize, Delay, and Release module in this
template. - ANSWERTrue

Where can you find some sort of Seize? - ANSWER-Within a Process module in the
Basic Process template
- A Seize module in the Advanced Process template
- A Seize block in the Blocks template



Why are things like Seize, Delay, Release in multiple templates? - ANSWERThe
process module does not allow us to use Seize, Delay, Release with sufficient
generality.

, True or False? 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. -
ANSWERTrue

True or False? You are only allowed to schedule one type of failure for a particular
resource. - ANSWERFalse

Which block is NOT in the Blocks template? - ANSWERProcess Block
- No such thing, but the Process module is in the Basic Process panel

Blocks template:
- Seize block
- Delay block
- Release block
- Alter block
- Queue block

True or False? The Queue block can connect up to the Seize module from the
Advanced Process template. - ANSWERFalse

Which kinds of sets are allowed? - ANSWER- Resource set
- Counter set
- Entity type set
- Entity picture set

True or False? It is possible for the resource Joey to be a member of three different
resource sets - ANSWERTrue

True or False? For easy display and organizational purposes, our Call Center
simulation is divided into several submodules. - ANSWERTrue

True or False? The customer arrival pattern for our Call Center changes over the day
and is therefore modeled as a nonhomogeneous Poisson process. - ANSWERTrue

True or False? All the Tech Support servers for our Call Center are equally skilled
and have the same concurrent work schedules - ANSWERFalse.

-Some of the workers are more talented than others.
- All the servers have different schedules

True or False? In the Call Center demo, fake customers are used to update a
variable that keeps track of the period of the day - ANSWERTrue

Consider our Call Center demo, What is the following Seize request asking for? Set,
Product 1, 1, Preferred Order, Agent. - ANSWERGrab a random server from the set
Product 1 and store the guy's identity in the attribute Agent

True or False. In our Inventory demo, fake customers are used to initiate a periodic
inventory review. - ANSWERTrue