供应链管理习题 12.docx

供应链管理习题 12.docx

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供应链管理习题12

SupplyChainManagement,5e（Chopra/Meindl）

Chapter12ManagingUncertaintyinaSupplyChain:

SafetyInventory

12.1True/FalseQuestions

1）Safetyinventoryisinventorycarriedforthepurposeofsatisfyingdemandthatexceedstheamountforecastedforagivenperiod.

Answer:

TRUE

Diff:

2

Topic:

12.1TheRoleofSafetyInventoryinaSupplyChain

LearningOutcome:

Comparecommonapproachestosupplychaindesign

2）Safetyinventoryiscarriedbecausedemandforecastsareaccurateandaproductshortagemayresultiftheforecastdemandexceedstheactualdemand.

Answer:

FALSE

Diff:

2

Topic:

12.1TheRoleofSafetyInventoryinaSupplyChain

AACSB:

AnalyticSkills

LearningOutcome:

Comparecommonapproachestosupplychaindesign

3）Raisingthelevelofsafetyinventoryincreasesproductavailabilityandthusthemargincapturedfromcustomerpurchases.

Answer:

TRUE

Diff:

2

Topic:

12.1TheRoleofSafetyInventoryinaSupplyChain

AACSB:

AnalyticSkills

LearningOutcome:

Comparecommonapproachestosupplychaindesign

4）Raisingthelevelofsafetyinventoryincreasesinventoryholdingcosts.

Answer:

TRUE

Diff:

1

Topic:

12.1TheRoleofSafetyInventoryinaSupplyChain

LearningOutcome:

Comparecommonapproachestosupplychaindesign

5）Carryingexcessiveinventorycanhelpcounterdemandvolatilitywhennewproductscomeonthemarket.

Answer:

FALSE

Diff:

2

Topic:

12.1TheRoleofSafetyInventoryinaSupplyChain

LearningOutcome:

Comparecommonapproachestosupplychaindesign

6）Theappropriatelevelofsafetyinventoryisdeterminedbytheuncertaintyofbothdemandandsupplyandthedesiredlevelofcycleinventory.

Answer:

FALSE

Diff:

2

Topic:

12.1TheRoleofSafetyInventoryinaSupplyChain

AACSB:

AnalyticSkills

LearningOutcome:

Comparecommonapproachestosupplychaindesign

7）Astheuncertaintyofsupplyordemandgrows,therequiredlevelofsafetyinventoriesincreases.

Answer:

TRUE

Diff:

2

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

8）Asthedesiredlevelofproductavailabilityincreases,therequiredlevelofsafetyinventorydecreases.

Answer:

FALSE

Diff:

1

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

9）Leadtimeisthegapbetweenwhenanorderisplacedandwhenitisreceived.

Answer:

TRUE

Diff:

1

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

10）Thecoefficientofvariationmeasuresthesizeoftherelativecertaintyofcycleinventory.

Answer:

FALSE

Diff:

1

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

11）Productavailabilityreflectsafirm'sabilitytofillacustomerorderoutofavailableinventory.

Answer:

TRUE

Diff:

2

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

12）Orderfillrateisthefractionofproductdemandthatissatisfiedfromproductininventory.

Answer:

FALSE

Diff:

2

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

13）Productfillrateisthefractionofproductdemandthatissatisfiedfromproductininventory.

Answer:

TRUE

Diff:

2

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

14）Thedistinctionbetweenproductfillrateandorderfillrateissignificantinasingleproductsituation.

Answer:

FALSE

Diff:

3

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

AACSB:

AnalyticSkills

LearningOutcome:

Comparecommonapproachestosupplychaindesign

15）Trackingorderfillratesisimportantwhencustomersplaceahighvalueontheentireorderbeingfilledsimultaneously.

Answer:

TRUE

Diff:

1

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

AACSB:

AnalyticSkills

LearningOutcome:

Comparecommonapproachestosupplychaindesign

16）Withperiodicreview,inventorystatusischeckedatregularintervalsandanorderisplacedtoraisetheinventoryleveltoaspecifiedthreshold.

Answer:

TRUE

Diff:

3

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

17）Theexpectedshortageperreplenishmentcycle（ESC）istheaverageunitsofdemandthataresatisfiedfrominventoryinstockperreplenishmentcycle.

Answer:

FALSE

Diff:

3

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

AACSB:

AnalyticSkills

LearningOutcome:

Comparecommonapproachestosupplychaindesign

18）ShortageoccursinareplenishmentcycleonlyifthedemandduringtheleadtimeexceedstheROP.

Answer:

TRUE

Diff:

2

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

AACSB:

AnalyticSkills

LearningOutcome:

Comparecommonapproachestosupplychaindesign

19）Thefillrateincreasesandthecycleserviceleveldecreasesasthesafetyinventoryisincreased.

Answer:

FALSE

Diff:

2

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

AACSB:

AnalyticSkills

LearningOutcome:

Comparecommonapproachestosupplychaindesign

20）Forthesamesafetyinventory,anincreaseinlotsizeincreasesthefillratebutnotthecycleservicelevel.

Answer:

TRUE

Diff:

3

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

AACSB:

AnalyticSkills

LearningOutcome:

Comparecommonapproachestosupplychaindesign

21）Therequiredsafetyinventorygrowsrapidlywithadecreaseinthedesiredproductavailability.

Answer:

FALSE

Diff:

1

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

22）Therequiredsafetyinventoryincreaseswithanincreaseintheleadtimeandthestandarddeviationofperiodicdemand.

Answer:

TRUE

Diff:

1

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

23）Agoalofanysupplychainmanageristoreducethelevelofsafetyinventoryrequiredregardlessoftheaffectproductavailability.

Answer:

FALSE

Diff:

1

Topic:

12.2DeterminingAppropriateLevelofSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

24）Inmostsupplychains,thekeytoreducingtheunderlyingforecastuncertaintyistolinkallforecaststhroughoutthesupplychaintocustomerdemanddata.

Answer:

TRUE

Diff:

2

Topic:

12.3ImpactofSupplyUncertaintyonSafetyInventory

AACSB:

ReflectiveThinkingSkills

LearningOutcome:

Comparecommonapproachestosupplychaindesign

25）Areductioninsupplycanhelpdramaticallyreducesafetyinventoryrequiredwithouthurtingproductavailability.

Answer:

FALSE

Diff:

2

Topic:

12.3ImpactofSupplyUncertaintyonSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

26）Aggregationreducesthestandarddeviationofdemandonlyifdemandacrosstheregionsbeingaggregatedisnotperfectlypositivelycorrelated.

Answer:

TRUE

Diff:

2

Topic:

12.4ImpactofAggregationonSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

27）Incasedemandindifferentgeographicalregionsisaboutthesamesizeandindependent,aggregationincreasessafetyinventorybythesquarerootofthenumberofareasaggregated.

Answer:

FALSE

Diff:

2

Topic:

12.4ImpactofAggregationonSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

28）Ifaggregationreducestherequiredsafetyinventoryforaproductbyasmallamount,itmaybebesttocarrytheproductinmultipledecentralizedlocationstoreduceresponsetimeandtransportationcost.

Answer:

TRUE

Diff:

2

Topic:

12.4ImpactofAggregationonSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

29）Thelowerthecoefficientofvariationofanitem,thegreaterthereductioninsafetyinventoriesasaresultofcentralization.

Answer:

FALSE

Diff:

3

Topic:

12.4ImpactofAggregationonSafetyInventory

AACSB:

AnalyticSkills

LearningOutcome:

Comparecommonapproachestosupplychaindesign

30）Manufacturer-drivensubstitutionincreasesoverallprofitabilityforthemanufacturerbyallowingsomeaggregationofdemand,whichreducestheinventoryrequirementsforthesamelevelofavailability.

Answer:

TRUE

Diff:

2

Topic:

12.4ImpactofAggregationonSafetyInventory

AACSB:

AnalyticSkills

LearningOutcome:

Comparecommonapproachestosupplychaindesign

31）Postponementallowsthesupplychaintodelayproductdifferentiation,whichresultsindisaggregatingmostoftheinventoriesinthesupplychain.

Answer:

FALSE

Diff:

2

Topic:

12.4ImpactofAggregationonSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

32）Periodicreviewpoliciesrequiremoresafetyinventorythancontinuousreviewpoliciesforthesamelevelofproductavailability.

Answer:

TRUE

Diff:

1

Topic:

12.5ImpactofReplenishmentPoliciesonSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

33）Whenusingacontinuousreviewpolicy,amanagerhastoaccountfortheuncertaintyofdemandduringtheleadtimeandthereviewinterval.

Answer:

FALSE

Diff:

1

Topic:

12.5ImpactofReplenishmentPoliciesonSafetyInventory

LearningOutcome:

Comparecommonapproachestosupplychaindesign

34）Cycleinventoryisinventorycarriedtosatisfydemandthatexceedstheamountforecastedforagivenperiod.

Answer:

FALSE

Diff:

1

Topic:

12.1TheRoleofSafetyInventoryinaSupplyChain

LearningO