information and decision making part 3 (5)

Question 1

_____ is the mathematics of waiting lines. It is extremely useful in predicting and evaluating system performance.

Answer 1

queuing theory

Question 2

____ has been used for operations research, manufacturing and system analysis.

Answer 2

queuing theory

Question 3

____ queuing theory problems refer to customers visiting a store, analogous to requests arriving at a device.

Answer 3

traditional

Question 4

What are the key elements of the queuing systems?

Answer 4

customer, server

Question 5

____ refers to anything that arrives at a facility and requires service, e.g. people, machines, trucks, emails.

Answer 5

customer

Question 6

_____ refers to nay resource that provides the requested service, e.g. repairpersons, retrieval machines, runways at airport.

Answer 6

server

Question 7

The queuing system has four major components: ____

Answer 7

input/arrival process, queue or waiting line, service process or the server, output/exit

Question 8

____ is when the customers arrive.

Answer 8

input or the arrival process

Question 9

_____ is the crucial element of a queuing system, as it shows the queue discipline.

Answer 9

queue structure

Question 10

____ is the order in which the customers are picked from the queue for the service.

Answer 10

queue discipline

Question 11

____ depends on the arrival of customers and the nature of service being offered.

Answer 11

queue discipline

Question 12

The customers can be chosen from the queue in one of the following ways: ____

Answer 12

first-come-first-served, last-come-first-served, service-in-random-order (SIRO), priority service

Question 13

When the services are rendered to the customers in order of their arrival, the queue discipline is the ______.

Answer 13

first-come-first-served

Question 13

When the services are rendered to the customers in order of their arrival, the queue discipline is the ______.

Answer 13

first-come-first-served

Question 14

It simply means, the person who comes last will be served first.

Answer 14

last-come-first-served

Question 15

Under this type of queue structure, the customer is chosen for service randomly and hence all the customers are equally likely to be selected.

Answer 15

service-in-random-order (SIRO)

Question 16

Under this rule, customers are grouped in priority classes on the basis of some attributes such as service time, or urgency or according to some identifiable characteristic, and FCFS rule is used within each class to provide service.

Answer 16

priority service

Question 17

_____ mean, a number of channels providing identical service facilities so that several customers may be served simultaneously.

Answer 17

parallel channels

Question 18

____ means a customer go through successive ordered channels before service is completed.

Answer 18

series channel

Question 19

A ____ is called a one-server model, i.e., when the system has only one server, and a multi-server model i.e., when the system has a number of parallel channels, each with one server.

Answer 19

queuing system

Question 20

What are the arrangement of service facilities in series?

Answer 20

single queue single server, sing queue multiple server

Question 21

What are the three customer characteristics/attitude?

Answer 21

balking, reneging, jockeying

Question 22

Customer decides not to join the queue by seeing the number of customers already in service system.

Answer 22

balking

Question 23

“I’m not going to wait in that line.”

Answer 23

balking

Question 24

Customer after joining the queue, waits for some time and leaves the service system due to delay in service.

Answer 24

reneging

Question 25

“I’m outta here.”

Answer 25

reneging

Question 26

Customer moves from one queue to another thinking that he will get served faster by doing so.

Answer 26

jockeying

Question 27

“Hey, that line looks like it’s moving faster.”

Answer 27

jockeying

Question 28

_____ is a formal technique useful where many possible courses of action are competing for attention.

Answer 28

Pareto analysis

Question 29

This technique is also called the vital few (20%) and the trivial many (80%).

Answer 29

Pareto analysis

Question 30

It is a statistical technique in decision making for selection of limited tasks which have significant overall impact.

Answer 30

Pareto analysis

Question 31

The value of the ____ for a project manager is that it reminds them to focus on the 20% of things that matter.

Answer 31

Pareto principle

Question 32

The Pareto effect is named after ____, an economist and sociologist who lived from 1848 to 1923. He observed in 1906 that 20% of the Italian population owned 80% of Italy’s wealth.

Answer 32

Vilfredo Pareto

Question 33

A ____ is a series of bards whose height reflect the frequency or impact of problems.

Answer 33

Pareto chart