1. A goal of many waiting line problems is to help a firm find the ideal level of services that minimize the cost of waiting and the cost of providing the service.
True
False
2. Queuing theory had its beginning in the research work of ________.
Albert Einstein
A.K. Erlang
J.K. Rowling
P.K. Poisson
A.K. Cox
3. The initial state of a queuing system (for example, when a restaurant first opens), is referred to as the ________ state.
steady
primary
introductory
transient
start-up
4. Arrivals are random when they are dependent on one another and can be predicted.
True
False
5. A(n) ________ state is the normal operating condition of the queuing system.
primary
transient
NOC
balanced
steady
6. Simulation of a business or process is generally performed by building a mathematical model to represent the process or system.
True
False
7. The following is not an advantage of simulation:
It allows for the study of what-if questions.
Each simulation model is unique.
It allows the study of interaction of components or variables to determine which are important.
It allows time compression.
None of the above
8. The study of waiting lines is called queuing theory.
True
False
9. Simulation models can be broken down into which of the following three categories?
Monte Carlo, queuing, and inventory
queuing, inventory, and maintenance policy
Monte Carlo, operational gaming, systems simulation
inventory, systems simulation, and operational gaming
None of the above
10. The logic in a simulation model is presented graphically through which of the following?
scatterplot
flowchart
blueprint
decision tree
None of the above
11. The process of comparing a model to the real system that it represents to make sure it is accurate is called
validation.
verification.
simulation.
experimentation.
None of the above
12. A bank with a single queue to move customers to several tellers is an example of a single-channel system.
True
False
13. Simulation can be effectively used in many
inventory problems
plant layout problems
maintenance policy problems.
sales forecasting problems.
All of the above
14. Simulation of maintenance problems can help management analyze various staffing strategies based on machine downtime and labor cost.
True
False
15. The advantage of simulation over queuing or waiting line models is that simulation allows us to relax our assumptions regarding arrival and service distributions.
True
False
16. A flow diagram is helpful in the logical coding procedures for programming a simulation process.
True
False
17. The four disadvantages of simulation are cost, its trial-and-error nature, time compression, and uniqueness.
True
False
18. An automatic car wash is an example of a constant service time model.
True
False
19. In queuing analysis, total expected cost is the sum of expected ________ plus expected
service costs, arrival costs
facility costs, calling costs
calling cost, inventory costs
calling costs, waiting costs
service costs, waiting costs
20. An arrival in a queue that reneges is one who
after joining the queue, becomes impatient and leaves.
refuses to join the queue because it is too long.
goes through the queue, but never returns.
jumps from one queue to another, trying to get through as quickly as possible.
None of the above
21. The three major characteristics of the input source that generates arrivals or customers for the service system are ________.
size, demographics, and behavior
size, pattern, and behavior
demographics, pattern, and behavior
size, demographics, and pattern
None of the above
22. Most systems use a queue discipline known as ________.
shortest processing time
longest processing time
FIFO
earliest due date
critical ratio
23. Monte Carlo simulation was developed as a quantitative technique by the great mathematician John von Neumann during World War I.
True
False
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