MGMT640 final exam 2015

QUESTION 1

The Disneyland is scheduling the repair of 6 rides next month:

Bus A B C D E F

Repair time in days 7 3 8 6 2 8

Using the LPT sequencing rule, what is the sequencing utilization?

a.

35.4%

b.

28.6%

c.

25.0%

d.

23.9%

e.

15.4%

4 points

QUESTION 2

What approach can be applied to optimize personnel scheduling in service:

a.

aggregate planning.

b.

inventory models.

c.

MRP scheduling.

d.

integer programming.

e.

tria-and-error scheduling.

4 points

QUESTION 3

For historical data on p. 12 of the lecture materials on Forecasting (week 2), moving averages and exponential smoothing forecasting methods were applied. The main reason for applying those forecasting methods is that the historical data has:

a.

stationary pattern.

b.

trend pattern.

c.

seasonal pattern.

d.

cyclical pattern.

e.

all of the above patterns.

4 points

QUESTION 4

The ABC company wants to choose between two locations, A and B. The fixed cost for location A is $60,000 and for location B, $40,000. The variable cost for location A is $3.00 per unit and for B, $5.00 per unit. The two locations have the same total costs at the following:

a.

10,000 dollars, with location B preferred at volume lower than 10,000.

b.

10,000 units, with location B preferred at volume lower than 10,000.

c.

10,000 dollars, with location A preferred at volume lower than 10,000.

d.

10,000 units, with location A preferred at volume lower than 10,000.

e.

none of the above.

4 points

QUESTION 5

Which of the following statements is true?

a.

The bigger the value of mean absolute deviation (MAD), the more accurate the forecast.

b.

The smaller the value of MAD, the more accurate the forecast.

c.

The bigger the value of mean absolute percentage error (MAPE), the more accurate the forecast.

d.

The bigger the value of mean error, the more accurate the forecast.

e.

All of the above is true.

4 points

QUESTION 6

The MTA of Santa Clara is scheduling the repair of busses for the next month. Currently, there are 5 buses needing repair:

Bus V W X Y Z

Repair time in days 7 2 8 6 2

Using the SPT sequencing rule, the sequence of buses for repair is which of the following?

a.

Y W X V Z

b.

Z Y W V Y

c.

W Z Y V X

d.

W Z V Y Z

e.

none of the above.

4 points

QUESTION 7

When selecting the best sequencing rule among the alternatives based on the utilization, the latter should be:

a.

the highest.

b.

the lowest.

c.

either the highest or lowest.

d.

all of the above.

e.

none of the above.

4 points

QUESTION 8

In a scheduling model, a requirement that the number of service employees in a night shift should not exceed 9 can be described as the model's:

a.

decision variable.

b.

objective function.

c.

constraint.

d.

additional condition.

e.

none of the above.

4 points

QUESTION 9

A service scheduling problem requires, among other things, to identify the number of employees that need to work during a day shift. This number of employees can be described as:

a.

decision variable.

b.

objective function.

c.

constraint.

d.

additional condition.

e.

answers "a" and "c".

4 points

QUESTION 10

In an employee scheduling problem, a statement like "minimize total number of employees" can represent the integer programming model's:

a.

decision variable.

b.

objective function.

c.

constraint.

d.

additional condition.

e.

none of the above.

4 points

QUESTION 11

Rough-cut capacity plan (RCCP) is used to:

a.

plan capacity according to demand forecast.

b.

validate capacity resources required for material requirements plan.

c.

validate capacity resources required for capacity requirements plan.

d.

validate capacity resources required for master demand schedule.

e.

validate capacity resources required for short-term schedule.

4 points

QUESTION 12

Material requirements planning is a typical example of:

a.

short-term scheduling.

b.

forward scheduling.

c.

backward scheduling.

d.

none of the above.

e.

answers "a" and "c".

4 points

QUESTION 13

Which one of the following is an example of a product-oriented layout?

a.

A sit down dinner in a restaurant.

b.

A construction site of a large airplane.

c.

A salad buffet line in a resaurant.

d.

An assembly line for producing TVs.

e.

Answers "c" and "d".

4 points

QUESTION 14

Some of the main inputs to rough-cut capacity plan (RCCP) include:

a.

bill of resources, bill of materials, master demand schedule, and accounting/finance.

b.

bill of resources, bill of materials, material requirements plan, and accounting/finance.

c.

bill of resources, bill of materials, master demand schedule, and inventory item attributes.

d.

bill of resources, bill of materials, material requirements plan, and supply chain bill.

e.

all of the above is true.

4 points

QUESTION 15

In capacity requirements planning, the desirable capacity utilization is:

a.

above 100%.

b.

significantly below 100%, for example, 10% or 20%.

c.

either above 100% or significantly below 100%.

d.

all of the above.

e.

none of the above.

4 points

QUESTION 16

The main results of MRP scheduling process are:

a.

Inventory on hand, safety stocks, and net requirements.

b.

Net requirements, planned orders and planned order releases.

c.

Inventory on hand, net requirements, and planned orders.

d.

Safety stocks and inventory on hand.

e.

None of the above.

4 points

QUESTION 17

Exponential smoothing is being used to forecast demand. The previous period forecast is 56 and the actual demand is 52. With a smoothing constant ? (alpha) equal to 0.3, the forecast for the next period will be:

a.

15.4

b.

30.8

c.

48.3

d.

53.2

e.

54.8

4 points

QUESTION 18

The first column of the following data refers to the months. The second column is the monthly demand of a particular product:

t At

1 17

2 15

3 11

4 19

5 13

If using a 4-period moving averages, the forecast in period 6 will be:

a.

15.5

b.

14.5

c.

14.3

d.

12.8

e.

none of the above.

4 points

QUESTION 19

Main inputs to master demand schedule (MDS) may include:

a.

Sales orders, planning bill of materials, and aggregate planning.

b.

Demand forecast, planned orders, and planned order releases.

c.

Sales orders, inventory on hand, and safety stock.

d.

All of the above.

e.

Answers "a" and "c".

4 points

QUESTION 20

In the MRP schedule for item A, the gross requirement is 245 units, safety stock is 44 units, and amount on hand is 131 units. The inventory policy is lot-for-lot. The net requirement is equal to:

a.

420

b.

332

c.

280

d.

158

e.

70