Reference no: EM13393798
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.
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.
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.
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.
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.
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.
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.
16. A flow diagram is helpful in the logical coding procedures for programming a simulation process.
17. The four disadvantages of simulation are cost, its trial-and-error nature, time compression, and uniqueness.
18. An automatic car wash is an example of a constant service time model.
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.