Question 1

Gas stations, loading docks, and parking lots have infinite potential length of lines for their respective queuing systems.

Accepted Answer

A) True 
 B)False

Question 2

An infinite population in waiting line management refers to a population that is large enough in relation to the service system so that the change in population size caused by subtractions or additions to the population does not significantly affect the system probabilities.

Accepted Answer

A) True 
 B)False

Question 3

Assume the service rate for a queue in a truck-loading operation is 2 trucks per hour.Using the infinite queuing notion for the models presented in the textbook, which of the following is the average service time?

Accepted Answer

A) 2 hours 
B) 1 hour 
C) 0.5 hour 
D) 0.25 hour 
E) None of these 
A) 2 hours 
B) 1 hour 
C) 0.5 hour 
D) 0.25 hour 
E) None of these

Question 4

Which of the following is a suggestion for managing queues that is mentioned in the textbook?

Accepted Answer

A) Put up a serpentine lane to keep people from jumping ahead in line. 
B) Use humor to defuse a potentially irritating situation. 
C) Segment the customers. 
D) Assure customers that the wait is fair, and inform them of the queue discipline. 
E) Tell people in the queue that each will be served as soon as possible. 
A) Put up a serpentine lane to keep people from jumping ahead in line. 
B) Use humor to defuse a potentially irritating situation. 
C) Segment the customers. 
D) Assure customers that the wait is fair, and inform them of the queue discipline. 
E) Tell people in the queue that each will be served as soon as possible.

Question 5

Assuming a 24 hour operation in a warehouse, and an arrival following Poisson distribution with mean rate of 36 per day and service (unloading using a single bay) following exponential distribution with a rate of 48 trucks per day, answer the following question.What is the expected waiting time in the system (in hours) for a typical truck?

Accepted Answer

A) 2 hours 
B) 1 hour 
C) 1.5 hour 
D) 0.25 hour 
E) 0.5 hours 
A) 2 hours 
B) 1 hour 
C) 1.5 hour 
D) 0.25 hour 
E) 0.5 hours

Question 6

Longest waiting time in line is a queue discipline discussed in the textbook.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following are the three major components of a queuing system?

Accepted Answer

A) The source population, how customers exit the system, and the queuing discipline 
B) The number of servers, the service speed, and the waiting line 
C) The source population, how the customer exits the system, and the servicing system 
D) The source population and the way customers arrive at the system, the serving systems, and how customers exit the system 
E) The service speed, the queue discipline, and the waiting line 
A) The source population, how customers exit the system, and the queuing discipline 
B) The number of servers, the service speed, and the waiting line 
C) The source population, how the customer exits the system, and the servicing system 
D) The source population and the way customers arrive at the system, the serving systems, and how customers exit the system 
E) The service speed, the queue discipline, and the waiting line

Question 8

Machine breakdown and repair in a 12-machine factory having one repair mechanic would develop which type of queuing system line structure concerning machine breakdowns?

Accepted Answer

A) Single channel, single phase 
B) Single channel, multiphase 
C) Multichannel, single phase 
D) Multichannel, multiphase 
E) None of these 
A) Single channel, single phase 
B) Single channel, multiphase 
C) Multichannel, single phase 
D) Multichannel, multiphase 
E) None of these

Question 9

A tellers' window in a bank is an example of a single-channel, multiphase queuing system.

Accepted Answer

A) True 
 B)False

Question 10

Best customer last is a queue discipline discussed in the textbook.

Accepted Answer

A) True 
 B)False

Question 11

In a practical sense, a finite population is one that potentially would form a very long line in relation to the capacity of the serving system.

Accepted Answer

A) True 
 B)False

Question 12

The admissions system in a hospital for patients is an example of a single-channel, single-phase queuing system.

Accepted Answer

A) True 
 B)False

Question 13

In a department 25 machines are kept running by three operators who respond to randomly occurring equipment problems.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following is a suggestion for managing queues that is mentioned in the textbook?

Accepted Answer

A) Put up a serpentine lane to keep people from jumping ahead in line. 
B) Use humor to defuse a potentially irritating situation. 
C) Train your servers to be friendly. 
D) Assure customers that the wait is fair, and inform them of the queue discipline. 
E) Tell people in the queue that each will be served as soon as possible. 
A) Put up a serpentine lane to keep people from jumping ahead in line. 
B) Use humor to defuse a potentially irritating situation. 
C) Train your servers to be friendly. 
D) Assure customers that the wait is fair, and inform them of the queue discipline. 
E) Tell people in the queue that each will be served as soon as possible.

Question 15

A company is concerned about the number of customers who have to wait for service in its customer service department.Assume the rate at which customers are serviced is 12 per hour.Using the infinite queuing notion for the models presented in the textbook, which of the following is the mean time between arrivals?

Accepted Answer

A) 12 minutes 
B) 6 minutes 
C) 2 minutes 
D) 1 minute 
E) None of these 
A) 12 minutes 
B) 6 minutes 
C) 2 minutes 
D) 1 minute 
E) None of these

Question 16

The term "queue discipline" involves the art of controlling surly and unruly customers who have become irritated by waiting.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is not a queue discipline discussed in the textbook?

Accepted Answer

A) First come, first served 
B) Last in, first out 
C) Limited needs 
D) Shortest processing time 
E) Best customer first 
A) First come, first served 
B) Last in, first out 
C) Limited needs 
D) Shortest processing time 
E) Best customer first

Question 18

Being able to permit interactive debugging of a model so the user can trace flows through the model and more easily find errors is considered a desirable feature of simulation software systems.

Accepted Answer

A) True 
 B)False

Question 19

A car wash is an example of a single-channel, multiphase queuing system.

Accepted Answer

A) True 
 B)False

Question 20

The central problem in virtually every waiting line situation is a decision balancing the costs of adding services with the costs of waiting.

Accepted Answer

A) True 
 B)False

Exam 10: Waiting Line Analysis and Simulation

Gas stations, loading docks, and parking lots have infinite potential length of lines for their respective queuing systems.

An infinite population in waiting line management refers to a population that is large enough in relation to the service system so that the change in population size caused by subtractions or additions to the population does not significantly affect the system probabilities.

Assume the service rate for a queue in a truck-loading operation is 2 trucks per hour.Using the infinite queuing notion for the models presented in the textbook, which of the following is the average service time?

Which of the following is a suggestion for managing queues that is mentioned in the textbook?

Longest waiting time in line is a queue discipline discussed in the textbook.

Which of the following are the three major components of a queuing system?

Machine breakdown and repair in a 12-machine factory having one repair mechanic would develop which type of queuing system line structure concerning machine breakdowns?

A tellers' window in a bank is an example of a single-channel, multiphase queuing system.

Best customer last is a queue discipline discussed in the textbook.

In a practical sense, a finite population is one that potentially would form a very long line in relation to the capacity of the serving system.

The admissions system in a hospital for patients is an example of a single-channel, single-phase queuing system.

In a department 25 machines are kept running by three operators who respond to randomly occurring equipment problems.

Which of the following is a suggestion for managing queues that is mentioned in the textbook?

The term "queue discipline" involves the art of controlling surly and unruly customers who have become irritated by waiting.

Which of the following is not a queue discipline discussed in the textbook?

Being able to permit interactive debugging of a model so the user can trace flows through the model and more easily find errors is considered a desirable feature of simulation software systems.

A car wash is an example of a single-channel, multiphase queuing system.

The central problem in virtually every waiting line situation is a decision balancing the costs of adding services with the costs of waiting.

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