完整版供应链管理第三版Unit11习题与答案Word下载.docx
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完整版供应链管理第三版Unit11习题与答案Word下载.docx
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False
3.Raisingthelevelofsafetyinventoryincreasesproductavailabilityandthusthemargincapturedfromcustomerpurchases.
4.Raisingthelevelofsafetyinventoryincreasesinventoryholdingcosts.
Easy
5.Carryingexcessiveinventorycanhelpcounterdemandvolatilitywhennewproductscomeonthemarket.
6.Theappropriatelevelofsafetyinventoryisdeterminedbytheuncertaintyofbothdemandandsupplyandthedesiredlevelofcycleinventory.
7.Astheuncertaintyofsupplyordemandgrows,therequiredlevelofsafetyinventoriesincreases.
8.Asthedesiredlevelofproductavailabilityincreases,therequiredlevelofsafetyinventorydecreases.
9.Leadtimeisthegapbetweenwhenanorderisplacedandwhenitisreceived.
10.Thecoefficientofvariationmeasuresthesizeoftherelativecertaintyofcycleinventory.
11.Productavailabilityreflectsafirm’sabilitytofillacustomerorderoutofavailableinventory.
True
12.Orderfillrateisthefractionofproductdemandthatissatisfiedfromproductininventory.
13.Productfillrateisthefractionofproductdemandthatissatisfiedfromproductininventory.
14.Thedistinctionbetweenproductfillrateandorderfillrateissignificantinasingleproductsituation.
Hard
15.Trackingorderfillratesisimportantwhencustomersplaceahighvalueontheentireorderbeingfilledsimultaneously.
16.Withcontinuousreview,inventoryiscontinuouslytrackedandanorderforalotsizeQisplacedatregularintervalsoftime.
17.Withperiodicreview,inventorystatusischeckedatregularintervalsandanorderisplacedtoraisetheinventoryleveltoaspecifiedthreshold.
18.Theexpectedshortageperreplenishmentcycle(ESC)istheaverageunitsofdemandthataresatisfiedfrominventoryinstockperreplenishmentcycle.
19.AshortageoccursinareplenishmentcycleonlyifthedemandduringtheleadtimeexceedstheROP.
20.Thefillrateincreasesandthecycleserviceleveldecreasesasthesafetyinventoryisincreased.
21.Forthesamesafetyinventory,anincreaseinlotsizeincreasesthefillratebutnotthecycleservicelevel.
22.Therequiredsafetyinventorygrowsrapidlywithadecreaseinthedesiredproductavailability.
23.Therequiredsafetyinventoryincreaseswithanincreaseintheleadtimeandthestandarddeviationofperiodicdemand.
24.Agoalofanysupplychainmanageristoreducethelevelofsafetyinventoryrequiredregardlessoftheaffectproductavailability.
25.Inmostsupplychains,thekeytoreducingtheunderlyingforecastuncertaintyistolinkallforecaststhroughoutthesupplychaintocustomerdemanddata.
26.Areductioninsupplycanhelpdramaticallyreducesafetyinventoryrequiredwithouthurtingproductavailability.
27.Aggregationreducesthestandarddeviationofdemandonlyifdemandacrosstheregionsbeingaggregatedisnotperfectlypositivelycorrelated.
28.Incasedemandindifferentgeographicalregionsisaboutthesamesizeandindependent,aggregationincreasessafetyinventorybythesquarerootofthenumberofareasaggregated.
29.Ifaggregationreducestherequiredsafetyinventoryforaproductbyasmallamount,itmaybebesttocarrytheproductinmultipledecentralizedlocationstoreduceresponsetimeandtransportationcost.
30.Thelowerthecoefficientofvariationofanitem,thegreaterthereductioninsafetyinventoriesasaresultofcentralization.
31.Manufacturer-drivensubstitutionincreasesoverallprofitabilityforthemanufacturerbyallowingsomeaggregationofdemand,whichreducestheinventoryrequirementsforthesamelevelofavailability.
32.Postponementallowsthesupplychaintodelayproductdifferentiation,whichresultsindisaggregatingmostoftheinventoriesinthesupplychain.
33.Periodicreviewpoliciesrequiremoresafetyinventorythancontinuousreviewpoliciesforthesamelevelofproductavailability.
34.Whenusingacontinuousreviewpolicy,amanagerhastoaccountfortheuncertaintyofdemandduringtheleadtimeandthereviewinterval.
MultipleChoice
1.Inventorycarriedforthepurposeofsatisfyingdemandthatexceedstheamountforecastedforagivenperiodis
a.cycleinventory.
b.demandinventory.
c.safetyinventory.
d.securityinventory.
e.alloftheabove
c
2.Safetyinventoryiscarriedbecause
a.demandforecastsareaccurate.
b.demandforecastsareuncertain.
c.adequatesuppliesareavailable.
d.excessproductwasmanufactured.
e.forecastdemandexceedstheactualdemand.
b
3.Thetrade-offthatasupplychainmanagermustconsiderwhenplanningsafetyinventoryis
a.increasingproductavailabilityversusincreasinginventoryholdingcosts.
b.decreasingproductavailabilityversusdecreasinginventoryholdingcosts.
c.increasingproductavailabilityversusraisingthelevelofsafetyinventory.
d.decreasingproductavailabilityversusdecreasingthelevelofsafetyinventory.
e.noneoftheabove
a
4.Theissueofproductavailabilityandthelevelofsafetyinventoryisparticularlysignificantinindustrieswhere
a.productlifecyclesareshortanddemandisstable.
b.productlifecyclesareshortanddemandisveryvolatile.
c.productlifecyclesarelonganddemandisstable.
d.productlifecyclesarelonganddemandisveryvolatile.
e.aandbonly
5.Akeytosuccessatwhichcompanyhasbeenitsabilitytoprovideahighlevelofproductavailabilitytocustomerswhilecarryingverylowlevelsofsafetyinventoryinitssupplychain?
a.Compaq
b.Hewlett-Packard
c.Dell
d.Packard-Bell
6.Whatkeyquestion(s)need(s)tobeconsideredwhenplanningsafetyinventoryforanysupplychain?
a.Whatistheappropriateleadtimetoestablish?
b.Whatistheappropriatelevelofsafetyinventorytocarry?
c.Whatactionscanbetakentoimproveproductavailabilitywhilereducingsafetyinventory?
d.aandbonly
e.bandconly
e
7.Theappropriatelevelofsafetyinventoryisdeterminedby
a.theuncertaintyofbothdemandandsupply.
b.thedesiredlevelofproductavailability.
c.thedesiredlevelofcycleinventory.
d.theprocessesinasupplychainaredividedinto2categoriesdependingalloftheabove
8.Astheuncertaintyofsupplyordemandgrows,therequiredlevelofsafetyinventories
a.decreases.
b.increases.
c.remainsstable.
d.bothaandb
9.Asthedesiredlevelofproductavailabilityincreases,therequiredlevelofsafetyinventory
10.Leadtimeisthegapbetween
a.whenanorderisplacedandwhenitisreceived.
b.whenanorderisreceivedandwhenitisputaway.
c.whenanorderisreceivedandwhenitisused.
d.whenanorderisacknowledgedandwhenitisreceived.
11.Thecoefficientofvariationmeasures
a.theaccuracyofthedemandforecast.
b.thesizeoftheuncertaintyrelativetodemand.
c.therelevanceofcycleinventorytodemand.
d.therelativecertaintyoftheforecast.
12.Whichofthefollowingisnotameasureofproductavailability?
a.customerfillrate
b.productfillrate
c.orderfillrate
d.cycleservicelevel(CSL)
13.Thefractionofordersthatarefilledfromavailableinventoryisthe
a.customerfillrate.
b.productfillrate.
c.orderfillrate.
d.cycleservicelevel(CSL).
14.Thefractionofproductdemandthatissatisfiedfromproductininventoryisthe
15.Thefractionofreplenishmentcyclesthatendwithallthecustomerdemandbeingmetisthe
b.prod
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