Question 1

Which of the following is NOT tracked by scheduling optimization systems used in retail stores?

Accepted Answer

A) cars parked in the parking lot 
B) individual store sales 
C) transactions 
D) units sold 
E) customer traffic 
A) cars parked in the parking lot 
B) individual store sales 
C) transactions 
D) units sold 
E) customer traffic A

Question 2

Identify the major disadvantages of the Gantt load chart.

Accepted Answer

It does not account for production variability,such as unexpected breakdowns or human errors that require reworking a job.Consequently,the chart must be updated regularly to account for new jobs and revised time estimates.

Question 3

What is finite capacity scheduling (FCS)?

Accepted Answer

FCS is computerized short-term scheduling that overcomes the disadvantages of rule-based systems by providing the user with graphical interactive computing.

Question 4

EDD stands for what?

Accepted Answer

A) earliest due date 
B) earliest design date 
C) earliest detrimental date 
D) earliest decision date 
E) economic date determination 
A) earliest due date 
B) earliest design date 
C) earliest detrimental date 
D) earliest decision date 
E) economic date determination

Question 5

Sequencing (or dispatching):

Accepted Answer

A) assigns dates to specific jobs or operations steps. 
B) assigns jobs to work centers. 
C) specifies the order in which jobs should be done at each center. 
D) assigns workers to jobs. 
E) assigns workers to machines. 
A) assigns dates to specific jobs or operations steps. 
B) assigns jobs to work centers. 
C) specifies the order in which jobs should be done at each center. 
D) assigns workers to jobs. 
E) assigns workers to machines.

Question 6

Use Johnson's rule to determine the optimal sequencing for the five jobs to be processed on two machines in a fixed order (Machine 1 before Machine 2).The processing times are given in the table below.
a.What is the optimal sequence?
b.What is the total flow time for this sequence?

Accepted Answer

(a,b)The optimal sequence is M

Question 7

Finite capacity scheduling provides the user with graphical interactive computing,which is the technique's primary advantage over rule-based scheduling.

Accepted Answer

A) True 
 B)False

Question 8

The emergency room at a hospital estimates the following requirements for registered nurses (RNs)for the late night shift each week.Nurses work four consecutive days,then have off three days.
   Perform cyclical scheduling on the data.(Note that you must identify three-day patterns of minimum requirements).How many RNs are required? How much extra capacity is required?

Accepted Answer

@#IMG-DLM& Days off are shaded.Seven full-time RNs

Question 9

What is the priority rule that sequences jobs using the smallest ratio of due date from today to processing time?

Accepted Answer

A) critical ratio 
B) earliest due date 
C) first come,first served 
D) longest processing time 
E) shortest processing time 
A) critical ratio 
B) earliest due date 
C) first come,first served 
D) longest processing time 
E) shortest processing time

Question 10

The critical ratio sequencing rule prioritizes the jobs based on the importance or value of the customers who have placed the orders.

Accepted Answer

A) True 
 B)False

Question 11

The jobs listed below need to be completed.Assume that it is now day 140.If the jobs are sequenced according to the longest processing time rule,what is the lateness of job A?

Accepted Answer

A) 0.0 days 
B) 24.0 days 
C) 7.4 days 
D) 10.0 days 
E) 11.6 days 
A) 0.0 days 
B) 24.0 days 
C) 7.4 days 
D) 10.0 days 
E) 11.6 days

Question 12

The short-term scheduling activity called "loading":

Accepted Answer

A) assigns dates to specific jobs or operations steps. 
B) specifies the order in which jobs should be done at each center. 
C) assigns jobs to work centers 
D) assigns workers to jobs. 
E) assigns workers to machines. 
A) assigns dates to specific jobs or operations steps. 
B) specifies the order in which jobs should be done at each center. 
C) assigns jobs to work centers 
D) assigns workers to jobs. 
E) assigns workers to machines.

Question 13

Because of the significance of labor in the scheduling of services,behavioral and social issues,wage and hour laws,and union contracts all complicate the scheduling process.

Accepted Answer

A) True 
 B)False

Question 14

Eight jobs have been sequenced at a single work center.Total processing time for the eight jobs is 34 hours,and total flow time for the sequence is 85 hours.For this schedule,utilization is ________ and the average number of jobs in the system is ________.

Accepted Answer

A) 100 percent; 10.625 
B) low; .0941 
C) 0.400 or 40 percent; 2.5 
D) 0.235 or 23.5 percent; 4.25 
E) maximized; minimized 
A) 100 percent; 10.625 
B) low; .0941 
C) 0.400 or 40 percent; 2.5 
D) 0.235 or 23.5 percent; 4.25 
E) maximized; minimized

Question 15

The priority rule that appears fair to customers in service systems is ________.

Accepted Answer

first come

Question 16

Five jobs are waiting for processing through two work centers.Their processing time (in minutes)at each work center is contained in the table below.Each job requires work center Sigma before work center Delta.According to Johnson's rule,what sequence of jobs will minimize the completion time for all jobs?

Accepted Answer

A) R-S-T-U-V 
B) S-V-T-R-U 
C) S-U-T-V-R 
D) V-R-U-S-T 
E) R-V-T-S-U 
A) R-S-T-U-V 
B) S-V-T-R-U 
C) S-U-T-V-R 
D) V-R-U-S-T 
E) R-V-T-S-U

Question 17

Which of the following dispatching rules tends to minimize job flow time?

Accepted Answer

A) FCFS: first come,first served 
B) SPT: shortest processing time 
C) EDD: earliest due date 
D) LPT: longest processing time 
E) FCLS: first come,last served 
A) FCFS: first come,first served 
B) SPT: shortest processing time 
C) EDD: earliest due date 
D) LPT: longest processing time 
E) FCLS: first come,last served

Question 18

The jobs listed below need to be completed.Assume that it is now day 140.If the jobs are sequenced according to the shortest processing time rule,what is the average completion time?

Accepted Answer

A) 47.6 days 
B) 60.2 days 
C) 94.0 days 
D) 2.5 days 
E) 238.0 days 
A) 47.6 days 
B) 60.2 days 
C) 94.0 days 
D) 2.5 days 
E) 238.0 days

Question 19

Which of the following is not an effectiveness criterion for scheduling?

Accepted Answer

A) minimizing customer waiting time 
B) minimizing completion time 
C) minimizing WIP inventory 
D) maximizing utilization 
E) maximizing flow time 
A) minimizing customer waiting time 
B) minimizing completion time 
C) minimizing WIP inventory 
D) maximizing utilization 
E) maximizing flow time

Question 20

Five welding jobs are waiting to be processed.Their processing times and due dates are given below.Using the critical ratio dispatching rule,in which order should the jobs be processed? All dates are specified as days from today.

Accepted Answer

A) B,D,A,E,C 
B) C,D,A,B,E 
C) C,E,A,D,B 
D) E,B,A,D,C 
E) B,D,A,C,E 
A) B,D,A,E,C 
B) C,D,A,B,E 
C) C,E,A,D,B 
D) E,B,A,D,C 
E) B,D,A,C,E

Exam 16: Short-Term Scheduling

Which of the following is NOT tracked by scheduling optimization systems used in retail stores?

Identify the major disadvantages of the Gantt load chart.

What is finite capacity scheduling (FCS)?

EDD stands for what?

Sequencing (or dispatching):

Use Johnson's rule to determine the optimal sequencing for the five jobs to be processed on two machines in a fixed order (Machine 1 before Machine 2).The processing times are given in the table below. a.What is the optimal sequence? b.What is the total flow time for this sequence?

Finite capacity scheduling provides the user with graphical interactive computing,which is the technique's primary advantage over rule-based scheduling.

What is the priority rule that sequences jobs using the smallest ratio of due date from today to processing time?

The critical ratio sequencing rule prioritizes the jobs based on the importance or value of the customers who have placed the orders.

The jobs listed below need to be completed.Assume that it is now day 140.If the jobs are sequenced according to the longest processing time rule,what is the lateness of job A?

The short-term scheduling activity called "loading":

Because of the significance of labor in the scheduling of services,behavioral and social issues,wage and hour laws,and union contracts all complicate the scheduling process.

Eight jobs have been sequenced at a single work center.Total processing time for the eight jobs is 34 hours,and total flow time for the sequence is 85 hours.For this schedule,utilization is ________ and the average number of jobs in the system is ________.

The priority rule that appears fair to customers in service systems is ________.

Which of the following dispatching rules tends to minimize job flow time?

The jobs listed below need to be completed.Assume that it is now day 140.If the jobs are sequenced according to the shortest processing time rule,what is the average completion time?

Which of the following is not an effectiveness criterion for scheduling?

Five welding jobs are waiting to be processed.Their processing times and due dates are given below.Using the critical ratio dispatching rule,in which order should the jobs be processed? All dates are specified as days from today.

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Eight jobs have been sequenced at a single work center.Total processing time for the eight jobs is 34 hours,and total flow time for the sequence is 85 hours.For this schedule,utilization is and the average number of jobs in the system is .