物流与供应链-第11章-练习题(含答案版)汇编

物流管理、供应链管理习题集打印版

目录第一章现代物流管理概论 (2)第二章供应链管理 (6)第三章现代物流过程与管理 (10)第四章物流配送 (13)第五章物流中心与物流园区 (20)第六章城市物流与国际物流 (23)第七章物流模式 (28)第八章第三方物流与客户服务 (29)第九章现代物流技术与设备 (32)第十章现代物流管理方法 (37)第一章现代物流管理概论一、单项选择题1. 下列说法正确的是（）。

A. 物流活动克服了供给方和需求方在空间维和时间维方面的距离，创造了空间价值和时间价值。

B. “效益背反”是物流领域中的普遍现象，说明了提高物流某一功能的效益时，物流其他功能的效益同时要减少。

C. 流通活动中资金流是在所有权更迭的交易过程中发生的，可以认为从属于商流。

D. 物流被称为“第三利润源泉”是表明只要重视和发展物流业就能提高效益，产生利润。

2. 关于商流和物流，下列说法正确的是（）。

A. 商流指的是商品的商业性交易，是伴随着物流过程的商品所有权的转让。

B. 物流是增值性的经济活动，其主要经济功能之一是增加物流对象的使用价值。

C. 商流是产生物流的物质基础。

D. 商流和物流的关系非常密切，它们都具有相同的活动内容和规律。

3. 通过物流理论的研究，物流概念产生的原因是（）。

A. 经济原因和管理原因B. 企业原因和军事原因C. 经济原因和军事原因D. 理论原因和企业原因4. 商流与物流的关系（）。

A. 相互独立，毫无关系B. 关系密切，相辅相成C. 物流是商流的先导D. 商物不分离5. 电子商务物流中的瓶颈是（）。

A. 信息技术B. 管理方法C. 配送体系D. 商务标准6. 物流中二律背反的特性是指（）两方面的要求是相互矛盾的。

A. 物流服务与成本B. 物流数量与服务C. 物流结构与成本D. 物流数量与结构7．物体横向或斜向的移动，称作（）。

A. 搬运B. 装卸C. 装卸搬运D. 运输8．运输向用户提供的不是有形产品，而是一种服务，它创造了物品的（），并以该效用为主，辅以多种增值服务功能，满足了用户的需求。

物流与供应链管理考试题简答及答案

物流与供应链管理考试题简答及答案物流1.物流与供应链管理的联系和区别？答：物流与供应链管理具有紧密的联系，两者的运作理念是一致的，而且供应链管理离不开物流管理。

物流系统是企业运行的重要组成部分，也是供应链管理理论、技术方法的主要应用领域。

供应链管理理论、技术方法的发展为改善物流管理和物流系统运行奠定了良好的理论基础。

区别主要表现在：（1）供应链管理强调的是“三流合一”，而物流仅为其中的一个环节；（2）供应链管理的范畴比物流更广。

（3）供应链管理是基于战略伙伴关系的企模型，而物流管理是基于物流企业的合作关系。

（4）供应链管理与物流管理的目标不一致。

2.物流设施选址的原则？答：（1）适应性原则。

区域性物流设施的选址必须与国家以及地区的经济发展方针、政策相适应，与我国物流资源分布和需求分布相适应，与国民经济和社会发展相适应。

（2）协调性原则。

物流设施选址应将国家的物流网络作为一个大系统来考虑，使物流设施与设备在地域分布、物流作业生产力、技术水平等方面相互协调。

（3）经济性原则。

在物流设施的发展过程中，有关选址的费用，主要包括建设费用及物流费用两部分。

物流设施的选址不同，其未来的物流费用是不同的，选址时应以总费用最低作为物流设施选址的标准。

（4）战略性原则。

物流设施的选址，应具有战略眼光。

一是要考虑全局观，二是要考虑长远性。

局部要服从全局，当前利益要服从长远利益，既要考虑当前的实际需要，又要考虑日后发展的可能。

3.企业物流网络规划的考虑因素？答：通常来说，企业物流网络规划涉及许多方面的内容，企业必须考虑多种因素的作用包括：（1）战略因素。

企业战略对企业物流网络规划具有指导作用。

在不同的战略指向下，会有不同的物流网络规划结果。

（2）竞争对手因素。

企业在规划物流网络时必须考虑到竞争对手的战略、规模和设施布局。

（3）客户因素。

客户对物流设施的服务质量、服务价格、服务半径、响应速度等方面的需求直接影响了企业物流网络布局规划。

物流与供应链管理习题

简答题1 供应链---是围绕企业，通过对信息流、物流、资金流旳控制，从采购原材料开始，制成中间产品以及最终产品，最终由销售网络把产品运送到消费者手中，将供应商、制造商、分销商、零售商、直到最终顾客连成一种整体旳功能网链构造模式。

1b 供应链旳特性1.复杂性。

由于供应链节点企业构成旳跨度(层次)不一样，供应链往往由多种、多类型、多地区企业构成，因此供应链构造模式比一般单个企业旳构造模式更为复杂。

2.动态性。

供应链管理因企业战略和适应市场需求变化旳需要，其中旳节点企业需要动态地更新，这就使得供应链具有明显旳动态性。

3.交叉性。

节点企业可以是这个供应链旳组员，同步又是另一种供应链旳组员，众多旳供应链形成交叉构造，增长了协调管理旳难度2 横向一体化：运用企业外部资源迅速响应市场需求，本企业只抓最关键旳东西：产品方向和市场。

至于生产，只抓关键零部件旳制造。

3 供应链合作伙伴关系答：一般是指在供应链内部两个或以上独立旳组员之间形成旳一种协调关系，以保证明现某个特定旳目旳或效益，也就是供应商-制造商关系，或者称为卖主/供应商-买主关系。

4 物流管理与供应链管理旳关系1）.物流管理是指通过物流管理组织对整个物流活动进行计划、组织、指挥、监督、控制、调整工作旳总和。

物流管理是对物流旳计划——实行——评价反复进行旳。

供应链管理旳概念为：“运用计算机网络技术全面规划供应链中旳商流、物流、信息流、资金流等，并进行计划、组织、协调与控制”。

供应链管理旳重要领域有：供应，生产计划，物流，需求，战略性供应商和顾客合作伙伴关系管理，供应链产品需求预测和计划，供应链旳设计，企业内部之间物料供应与需求管理，基于供应链管理旳产品设计与制造管理、生产集成化计划、跟踪和控制，基于供应链旳顾客服务和物流管理，企业间资金流管理，基于Internet ／Intranet旳供应链交互信息管理等。

]2）.两者之间有区别也有联络。

从管理对象上观测，物流管理旳对象是物流活动和与物流活动直接有关旳其他活动。

物流与供应链管理考试试题

物流与供应链管理考试试题一、选择题（每题2分，共40分）在下列选项中，选择最符合题意的答案，并将其序号填写在答题纸上。

1.物流是指（）。

A.产品流动的过程B.物品从供应商到顾客的流动C.管理货物的活动D.所有运输活动的总和2.以下哪项不属于供应链管理的关键活动？A.采购B.生产C.销售D.运输3.在供应链管理中，最重要的目标是（）。

A.降低成本B.提高顾客满意度C.提高运输效率D.增加销售额4.以下哪项不是物流网络设计的重要环节？A.运输模式选择B.仓库布局设计C.配送中心位置选择D.产品定价策略5.以下哪项不属于物流成本的主要组成部分？A.运输成本B.仓储成本C.人工成本D.信息成本6.以下哪项是物流服务质量的重要指标？A.发货及时率B.库存周转率C.成本率D.运输距离7.以下哪项不属于供应链中的信息技术系统？A.电子商务平台B.供应链协同系统C.企业资源计划系统D.财务管理系统8.以下哪项不属于物流风险管理的范畴？A.运输风险B.仓储风险C.市场风险D.竞争风险9.以下哪项不属于供应链的竞争优势？A.成本优势B.创新优势C.产品质量优势D.市场地位优势10.物流与供应链的目标一致，即都是为了（）。

A.实现快速交付B.实现高效生产C.提供优质服务D.降低成本二、简答题（每题10分，共30分）根据问题，简要回答以下三个问题。

1. 什么是物流网络设计？请简述一下物流网络设计的流程。

物流网络设计是指根据企业的物流需求和业务特点，合理规划和设计物流网络的过程。

其流程包括以下几个步骤：1）需求分析：对企业的物流需求进行全面分析，包括运输、仓储、配送等方面的需求。

2）网络规划：确定物流网络的整体布局，包括仓库的位置和数量、配送中心的位置等。

3）运输模式选择：根据物流需求和成本因素，选择适合的运输模式，如公路运输、航空运输等。

4）仓库布局设计：根据不同商品的特点和仓储需求，确定仓库的布局和内部管理方式。

5）配送中心位置选择：根据市场需求和运输距离等因素，选择适合的配送中心的位置。

供应链管理第三版Unit11习题与答案(可编辑修改word版)

Chapter 11Managing Uncertainty in the Supply Chain: Safety InventoryTrue/False1. Safety inventory is inventory carried for the purpose of satisfying demand thatexceeds the amount forecasted for a given period.Answer: TrueDifficulty: Moderate2. Safety inventory is carried because demand forecasts are accurate and aproduct shortage may result if the forecast demand exceeds the actual demand.Answer: FalseDifficulty: Moderate3. Raising the level of safety inventory increases product availability and thus themargin captured from customer purchases.Answer: TrueDifficulty: Moderate4. Raising the level of safety inventory increases inventory holding c osts.Answer: TrueDifficulty: Easy5. Carrying excessive inventory can help counter demand volatility when newproducts come on the market.Answer: FalseDifficulty: Moderate6. The appropriate level of safety inventory is determined by the uncertainty of bothdemand and supply and the desired level of cycle inventory.Answer: FalseDifficulty: Moderate7. As the uncertainty of supply or demand grows, the required level of safetyinventories increases.Answer: TrueDifficulty: Moderate8. As the desired level of product availability increases, the required level of s afetyinventory decreases.Answer: FalseDifficulty: Easy9. Lead time is the gap between when an order is placed and when it is r eceived.Answer: TrueDifficulty: Easy10. The coefficient of variation measures the size of the relative certainty of cycleinventory.Answer: FalseDifficulty: Easy11. Product availability reflects a firm’s ability to fill a customer order out of availableinventory.Answer: TrueDifficulty: Moderate12. Order fill rate is the fraction of product demand that is satisfied from product ininventory.Answer: FalseDifficulty: Moderate13. Product fill rate is the fraction of product demand that is satisfied from product ininventory.Answer: TrueDifficulty: Moderate14. The distinction between product fill rate and order fill rate is significant in a singleproduct situation.Answer: FalseDifficulty: Hard15. Tracking order fill rates is important when customers place a high value on theentire order being filled simultaneously.Answer: TrueDifficulty: Easy16. With continuous review, inventory is continuously tracked and an order for a lotsize Q is placed at regular intervals of time.Answer: FalseDifficulty: Hard17. With periodic review, inventory status is checked at regular intervals and an orderis placed to raise the inventory level to a specified threshold.Answer: TrueDifficulty: Hard18. The expected shortage per replenishment cycle (ESC) is the average units ofdemand that are satisfied from inventory in stock per replenishment cycle.Answer: FalseDifficulty: Hard19. A shortage occurs in a replenishment cycle only if the demand during the leadtime exceeds the ROP.Answer: TrueDifficulty: Moderate20. The fill rate increases and the cycle service level decreases as the safetyinventory is increased.Answer: FalseDifficulty: Moderate21. For the same safety inventory, an increase in lot size increases the fill rate butnot the cycle service level.Answer: TrueDifficulty: Hard22. The required safety inventory grows rapidly with a decrease in the desiredproduct availability.Answer: FalseDifficulty: Easy23. The required safety inventory increases with an increase in the lead time and thestandard deviation of periodic demand.Answer: TrueDifficulty: Easy24. A goal of any supply chain manager is to reduce the level of safety inventoryrequired regardless of the affect product availability.Answer: FalseDifficulty: Easy25. In most supply chains, the key to reducing the underlying forecast uncertainty isto link all forecasts throughout the supply chain to customer demand data.Answer: TrueDifficulty: Moderate26. A reduction in supply can help dramatically reduce safety inventory requiredwithout hurting product availability.Answer: FalseDifficulty: Moderate27. Aggregation reduces the standard deviation of demand only if demand acrossthe regions being aggregated is not perfectly positively correlated.Answer: TrueDifficulty: Moderate28. In case demand in different geographical regions is about the same size andindependent, aggregation increases safety inventory by the square root of thenumber of areas aggregated.Answer: FalseDifficulty: Moderate29. If aggregation reduces the required safety inventory for a product by a smallamount, it may be best to carry the product in multiple decentralized locations t o reduce response time and transportation cost.Answer: TrueDifficulty: Moderate30. The lower the coefficient of variation of an item, the greater the reduction insafety inventories as a result of centralization.Answer: FalseDifficulty: Hard31. Manufacturer-driven substitution increases overall profitability for themanufacturer by allowing some aggregation of demand, which reduces theinventory requirements for the same level of availability.Answer: TrueDifficulty: Moderate32. Postponement allows the supply chain to delay product differentiation, whichresults in disaggregating most of the inventories in the supply chain. Answer:FalseDifficulty: Moderate33. Periodic review policies require more safety inventory than continuous reviewpolicies for the same level of product availability.Answer: TrueDifficulty: Easy34. When using a continuous review policy, a manager has to account for theuncertainty of demand during the lead time and the review interval.Answer: FalseDifficulty: EasyMultiple Choice1. Inventory carried for the purpose of satisfying demand that exceeds the amountforecasted for a given period isa. cycle inventory.b. demand inventory.c. safety inventory.d. security inventory.e. all of the aboveAnswer: cDifficulty: Easy2. Safety inventory is carried becausea. demand forecasts are accurate.b. demand forecasts are uncertain.c. adequate supplies are available.d. excess product was manufactured.e. forecast demand exceeds the actual demand.Answer: b Difficulty:Moderate3. The trade-off that a supply chain manager must consider when planning safetyinventory isa. increasing product availability versus increasing inventory holding costs.b. decreasing product availability versus decreasing inventory holding costs.c. increasing product availability versus raising the level of safety inventory.d. decreasing product availability versus decreasing the level of safetyinventory.e. none of the aboveAnswer: aDifficulty: Moderate4. The issue of product availability and the level of safety inventory is particularlysignificant in industries wherea. product life cycles are short and demand is stable.b. product life cycles are short and demand is very volatile.c. product life cycles are long and demand is stable.d. product life cycles are long and demand is very volatile.e. a and b onlyAnswer: b Difficulty:Moderate5. A key to success at which company has been its ability to provide a high level ofproduct availability to customers while carrying very low levels of safety inventory in its supply chain?a. Compaqb. Hewlett-Packardc. Delld. Packard-Belle. all of the aboveAnswer: cDifficulty: Moderate6. What key question(s) need(s) to be considered when planning safety inventoryfor any supply chain?a. What is the appropriate lead time to establish?b. What is the appropriate level of safety inventory to carry?c. What actions can be taken to improve product availability while reducingsafety inventory?d. a and b onlye. b and c onlyAnswer: e Difficulty:Moderate7. The appropriate level of safety inventory is determined bya. the uncertainty of both demand and supply.b. the desired level of product availability.c. the desired level of cycle inventory.d. the processes in a supply chain are divided into 2 categories dependingall of the abovee. a and b onlyAnswer: e Difficulty:Moderate8. As the uncertainty of supply or demand grows, the required level of safetyinventoriesa. decreases.b. increases.c. remains stable.d. both a and be. none of the aboveAnswer: bDifficulty: Moderate9. As the desired level of product availability increases, the required level of s afetyinventorya. decreases.b. increases.c. remains stable.d. both a and be. none of the aboveAnswer: eDifficulty: Moderate10. Lead time is the gap betweena. when an order is placed and when it is received.b. when an order is received and when it is put away.c. when an order is received and when it is used.d. when an order is acknowledged and when it is received.e. none of the aboveAnswer: aDifficulty: Easy11. The coefficient of variation measuresa. the accuracy of the demand forecast.b. the size of the uncertainty relative to demand.c. the relevance of cycle inventory to demand.d. the relative certainty of the forecast.e. none of the aboveAnswer: bDifficulty: Moderate12. Which of the following is not a measure of product availability?a. customer fill rateb. product fill ratec. order fill rated. cycle service level (CSL)e. none of the aboveAnswer: aDifficulty: Moderate13. The fraction of orders that are filled from available inventory is thea. customer fill rate.b. product fill rate.c. order fill rate.d. cycle service level (CSL).e. none of the aboveAnswer: cDifficulty: Easy14. The fraction of product demand that is satisfied from product in inventory is thea. customer fill rate.b. product fill rate.c. order fill rate.d. cycle service level (CSL).e. none of the aboveAnswer: bDifficulty: Easy15. The fraction of replenishment cycles that end with all the customer demand beingmet is thea. customer fill rate.b. product fill rate.c. order fill rate.d. cycle service level (CSL).e. none of the aboveAnswer: dDifficulty: Easy16. If a customer order arrives when product is not availablea. a sale results.b. the retailer allocates product to the customer.c. a stockout results.d. the order is filled from safety inventory.e. none of the aboveAnswer: cDifficulty: Moderate17. The distinction between product fill rate and order fill rate isa. not significant in a single product situation.b. significant in a single product situation.c. not significant when a firm is selling multiple products.d. significant when a firm is selling multiple products.e. both a and dAnswer: aDifficulty: Moderate18. A replenishment policya. consists of decisions regarding when to reorder and how much to reorder.b. determines the cycle and safety inventories along with the fr and the CSL.c. may take several forms.d. All of the above are true.e. None of the above are true.Answer: dDifficulty: Moderate19. A company that tracks inventory and places an order for a lot size Q when theinventory declines to the reorder point (ROP) is usinga. continuous review.b. daily review.c. occasional review.d. periodic review.e. none of the aboveAnswer: aDifficulty: Easy20. A company that checks inventory status at regular periodic intervals and placesan order to raise the inventory level to a specified threshold is usinga. continuous review.b. daily review.c. occasional review.d. periodic review.e. none of the aboveAnswer: dDifficulty: Moderate21. Which of the following is correct?a. Average inventory = cycle inventory + safety inventoryb. Average inventory = cycle inventory - safety inventoryc. Average inventory = cycle inventory x safety inventoryd. Average inventory = cycle inventory / safety inventorye. none of the aboveAnswer: aDifficulty: Easy22. The expected shortage per replenishment cycle (ESC) isa. the units of demand that are not satisfied from inventory in stock in agiven replenishment cycle.b. the units of demand that are satisfied from inventory in stock in a givenreplenishment cycle.c. the average units of demand that are not satisfied from inventory in stockper replenishment cycle.d. the average units of demand that are satisfied from inventory in stock perreplenishment cycle.e. none of the aboveAnswer: cDifficulty: Moderate23. The product fill rate (fr) is thus given bya. fr = 1 –ESC/Q + (Q – ES C)/Q.b. fr = 1 –ESC/Q – (Q – ES C)/Q.c. fr = 1 + ESC/Q = (Q + ES C)/Q.d. fr = 1 –ESC/Q = (Q – ES C)/Q.e. none of the aboveAnswer: dDifficulty: Hard24. Given a lot size of Q (which is also the average demand in a replenishmentcycle)a. the fraction of demand lost is thus ESC + Q.b. the fraction of demand lost is thus ESC –Q.c. the fraction of demand lost is thus ESC/Q.d. the fraction of demand lost is thus ESC x Q.e. none of the aboveAnswer: cDifficulty: Hard25. A shortage occurs in a replenishment cyclea. only if the demand during the lead time exceeds the ROP.b. only if the demand during the lead time is less than the ROP.c. only if the demand during the lead time exceeds the average demand.d. only if the demand during the lead time is less than the average demand.e. none of the aboveAnswer: aDifficulty: Moderate26. As the safety inventory is increaseda. fill rate increases and cycle service level decreases.b. fill rate decreases and cycle service level increases.c. both fill rate and cycle service level increase.d. both fill rate and cycle service level decrease.e. none of the aboveAnswer: cDifficulty: Moderate27. For the same safety inventory, an increase in lot sizea. decreases the fill rate but not the cycle service level.b. increases the fill rate but not the cycle service level.c. decreases both the fill rate and the cycle service level.d. increases both the fill rate and the cycle service level.e. none of the aboveAnswer: cDifficulty: Hard28. The expected shortage per replenishment cycle is shown asa. ESC = (1 + fr)Q.b. ESC = (1 –fr)Q.c. ESC = (1 + fr)/Q.d. ESC = (1 –fr)/Q.e. none of the aboveAnswer: bDifficulty: Hard29. The required safety inventorya. grows rapidly with a decrease in the desired product a vailability.b. grows rapidly with an increase in the desired product availability.c. decreases with an increase in the desired product a vailability.d. remains stable with an increase in the desired product availability.e. none of the aboveAnswer: bDifficulty: Moderate30. The required safety inventorya. increases with an increase in the lead time and the standard deviation ofperiodic demand.b. decreases with an increase in the lead time and the standard deviation ofperiodic demand.c. remains stable with an increase in the lead time and the standarddeviation of periodic demand.d. increases with a decrease in the lead time and the standard deviation ofperiodic demand.e. none of the aboveAnswer: dDifficulty: Moderate31. A goal of any supply chain manager is toa. increase the level of safety inventory required in a way that does notadversely affect product availability.b. increase the level of safety inventory required regardless of the effect onproduct availability.c. reduce the level of safety inventory required regardless of the effect onproduct availability.d. reduce the level of safety inventory required in a way that does notadversely affect product availability.e. none of the aboveAnswer: dDifficulty: Moderate32. Which of the following is not an approach to reduce the level of safety inventoryrequired in a way that does not adversely affect product availability?a. Reduce the supplier lead time.b. Reduce the underlying uncertainty of demand.c. Reduce the cost of material coming from suppliers.d. All of the above are approaches.e. None of the above are approaches.Answer: cDifficulty: Hard33. Often, safety inventory calculations in practicea. do not include any measure of supply uncertainty, resulting in levels thatmay be higher than required.b. do not include any measure of supply uncertainty, resulting in levels thatmay be lower than required.c. include measures of supply uncertainty, resulting in levels that may behigher than required.d. include any measures of supply uncertainty, resulting in levels that maybe lower than required.e. None of the above are accurate.Answer: bDifficulty: Hard34. Aggregation reduces the standard deviation of demanda. only if demand across the regions being aggregated is perfectly positivelycorrelated.b. only if demand across the regions being aggregated is not p erfectlypositively correlated.c. even if demand across the regions being aggregated is not p erfectlypositively correlated.d. whenever demand across the regions being aggregated is not perfectlypositively correlated.e. All of the above are accurate.Answer: bDifficulty: Hard35. If the number of independent stocking locations decreases by a factor of n, theaverage safety inventory is expected toa. decrease by a factor of √n.b. decrease by a factor of n.c. increase by a factor of √n.d. increase by a factor of n.e. None of the above are accurate.Answer: aDifficulty: Moderate36. Which of the following is not a major disadvantage of aggregating all inventory inone location?a. Increase in forecast accuracy of customer demand.b. Increase in response time to customer order.c. Increase in transportation cost to customer.d. All of the above are disadvantages.e. All of the above are advantages.Answer: aDifficulty: Easy37. Which of the following is not a method by which a supply chain can extract thebenefits of aggregation without having to physically centralize all inventories inone location?a. information centralizationb. specializationc. product substitutiond. component differentiatione. postponementAnswer: dDifficulty: Moderation38. Which approach to aggregation requires an information system that allowsaccess to current inventory records from each location?a. information centralizationb. specializationc. product substitutiond. component commonalitye. postponementAnswer: aDifficulty: Easy39. Which approach to aggregation would stock the fast-moving items atdecentralized locations close to the customer and slow-moving items at acentralized location?a. information centralizationb. specializationc. product substitutiond. component commonalitye. postponementAnswer: b Difficulty:Moderate40. The use of one product to satisfy demand for a different product isa. information centralization.b. specialization.c. product substitution.d. component commonality.e. postponement.Answer: cDifficulty: Easy41. Which use of common components in a variety of products has been a veryeffective supply chain strategy to exploit aggregation and reduce componentinventories?a. information centralizationb. specializationc. product substitutiond. component commonalitye. postponementAnswer: aDifficulty: Easy42. The ability of a supply chain to delay product differentiation or customization u ntilcloser to the time the product is sold isa. information centralization.b. specialization.c. product substitution.d. component commonality.e. postponement.Answer: e Difficulty:Moderate43. Which approach to aggregation has the goal of moving product differentiation asclose to the pull phase of the supply chain as possible?a. information centralizationb. specializationc. product substitutiond. component commonalitye. postponementAnswer: e Difficulty:Moderate44. Periodic review policies for inventory replenishment require safety inventory tocover demand duringa. lead time only.b. the review interval only.c. both lead time and the review interval.d. neither lead time or the review interval.e. lead time when it exceeds the review interval.Answer: cDifficulty: Moderate45. Continuous review policies for inventory replenishment require safety inventory tocover demand duringa. lead time only.b. the review interval only.c. both lead time and the review interval.d. neither lead time or the review interval.e. lead time when it exceeds the review interval.Answer: aDifficulty: Moderate46. Periodic review policies requirea. more safety inventory than continuous review policies for the same levelof product availability.b. less safety inventory than continuous review policies for the same level ofproduct availability.c. the same safety inventory as continuous review policies for the samelevel of product availability.d. no more safety inventory than continuous review policies for the samelevel of product availability.e. none of the aboveAnswer: aDifficulty: Moderate47. All inventory between a given stage in the supply chain and the final customer iscalled thea. cycle inventory.b. demand inventory.c. echelon inventory.d. safety inventory.e. none of the aboveAnswer: cDifficulty: Hard48. A distributor should decide his safety inventory levels based ona. the level of safety inventory carried by all retailers supplied by him.b. the level of safety inventory carried by other distributors.c. the level of safety inventory carried by manufacturers supplying him.d. the level of cycle inventory carried by all retailers supplied by him.e. the level of cycle inventory carried by other distributors.Answer: aDifficulty: Hard49. As retailers decrease the level of safety inventory they carry, the distributor willhave toa. decrease his or her safety inventory.b. increase his or her safety inventory.c. keep his or her safety inventory at the same level.d. increase his or her cycle inventory.e. decrease his or her cycle inventory.Answer: bDifficulty: HardEssay/Problems1. Discuss the role of safety inventory in the supply chain and the trade-offsinvolved.Answer: The primary role of safety inventory is providing product availability forcustomers when demand and supply are uncertain. The trade-off that a supplychain manager must consider when planning safety inventory involve productavailability and inventory holding costs. On one hand, raising the level of safetyinventory increases product availability and thus the margin captured fromcustomer purchases. On the other hand, raising the level of safety inventoryincreases inventory holding costs. This issue is particularly significant inindustries where product life cycles are short and demand is very volatile.Carrying excessive inventory can help counter demand volatility but can reallyhurt if new products come on the market and demand for the product in inventory dries up. The inventory on hand then becomes worthless.In today’s business environment, firms experience great pressure to improveproduct availability while increasing product variety through customization. As aresult, markets have become increasingly heterogeneous and demand forindividual products is very unstable and difficult to forecast. Both the increasedvariety and the increased pressure for availability push firms to increase the level of safety inventory they hold.At the same time, product life cycles have shrunk. This increases the risk to firms of carrying too much inventory. Thus, a key to the success of any supply chain is to figure out ways to decrease the level of safety inventory carried without hurting the level of product availability.Difficulty: Hard2. Discuss the various measures of product availability.Answer: Product availability reflects a firm’s ability to fill a customer order out ofavailable inventory. A stockout results if a customer order arrives when product is not available. There are several ways to measure product availability. Allavailability measures are defined on average over a given time frame, which can range from hours to a year.Product fill rate (fr) is the fraction of product demand that is satisfied from product in inventory. It is equivalent to the probability that product demand is suppliedfrom available inventory.Order fill rate is the fraction of orders that are filled from available inventory. In a multi-product scenario, an order is filled from inventory only if all products in theorder can be supplied from the available inventory. Order fill rates tend to belower than product fill rates because all products must be in stock for an order to be filled.Cycle service level (CSL) is the fraction of replenishment cycles that end with all the customer demand being met. A replenishment cycle is the interval betweentwo successive replenishment deliveries. The CSL is equal to the probability ofnot having a stockout in a replenishment cycle. Observe that a CSL of 60 percent will typically result in a much higher fill rate.The distinction between product fill rate and order fill rate is not significant in asingle product situation. When a firm is selling multiple products, however, thisdifference may be significant. For example, if most orders include 10 or moredifferent products that are to be shipped, an out-of-stock situation of one product results in the order not being filled from stock. The firm in this case may have apoor order fill rate even though it has good product fill rates. Tracking order fillrates is important when customers place a high value on the entire order beingfilled simultaneously.Difficulty: Moderate3. Describe the two types of ordering policies and the impact each has on safetyinventory.Answer: A replenishment policy consists of decisions regarding when to reorderand how much to reorder. These decisions determine the cycle and safetyinventories along with the fr and the CSL. There are several forms thatreplenishment policies may take. We restrict attention to two instances:1. Continuous review: Inventory is continuously tracked and an order for a lotsize Q is placed when the inventory declines to the reorder point (ROP). The time between orders may fluctuate given variable demand. When using a continuousreview policy, a manager has to account only for the uncertainty of demandduring the lead time (L).2. Periodic review: Inventory status is checked at regular periodic intervals andan order is placed to raise the inventory level to a specified threshold. In thiscase, the time between orders is fixed. The size of each order, however, can。

物流与供应链管理重点及答案----11月汇编

1、SWOT是指什么？237答：SWOT分析法又称为态势分析法．它是由旧金山大学的管理学教授于20世纪80年代初提出来的．是一种能够较客观而准确地分析和研究一个单位现实情况的方法。

SWOT分别代表优势、劣势、机会和威胁。

2、什么是企业即时采购战略？234纵向协同物流战略？235答：企业即时采购战略是将即时生产和即时物流综合考虑，形成一个决策系统来提高企业的经营效率。

即时采购是一种先进的采购模式，其基本思想是在恰当的时间、恰当的地点，以恰当的数量、恰当的质量从上游厂商向企业提供恰当的产品。

纵向协同物流战略是流通渠道不同阶段企业相互协调，形成合作性、共同化的物流管理系统，也就是供应链的管理。

3、预测管理的基础是什么？（P81页第3-5行）预测管理的基础是（预测数据库），它包括经过处理后等待发货的订单，以往需求的历史数据以及刺激需求的策略，如促销、特殊交易或者产品交换等。

4、物流车辆维修与保养计划是否是企业物流系统规划与设计的主要内容(不是)企业物流系统规划与设计的主要内容包括：（1）物流网络布局规划；（2）物流节点内部布局规划；（3）物流设备选型和平面布局设计。

5、物流体系的本质是什么？答：物流体系的本质是以自身发展理念、发展方式、发展内容为指导并通过专门的作业创造并实现价值的活动。

6．如何确定安全库存量？P186安全库存=前置需求标准差*标准差值再订货点=前置需求标准差+安全库存7．（预测的准确性）是指销售预测值与实际的销售值之间的差别大小。

P828、供应链管理中，S&OP的典型处理流程有哪些P32答：在举行SOP会议之前，需求计划和供应计划已经得到匹配，形成了初步的供需计划，带到会议上进行探讨，当然不这并不是说这个计划不能变更，而是可以在充分协商的基本上，再加以调整。

销售与运作规划（S&OP）是以（月）为单位进行滚动进行的.28有哪些常用的定量预测方法？（P78-79页）常用的定量预测方法有：1.定性分析法；2.移动平均数法；（3.指数加权平均数法。

供应链管理第三版Unit11习题与答案(最新整理)

Chapter 11Managing Uncertainty in the Supply Chain: Safety InventoryTrue/False1. Safety inventory is inventory carried for the purpose of satisfying demand thatexceeds the amount forecasted for a given period.Answer: TrueDifficulty: Moderate2. Safety inventory is carried because demand forecasts are accurate and aproduct shortage may result if the forecast demand exceeds the actual demand.Answer: FalseDifficulty: Moderate3. Raising the level of safety inventory increases product availability and thus themargin captured from customer purchases.Answer: TrueDifficulty: Moderate4. Raising the level of safety inventory increases inventory holding c osts.Answer: TrueDifficulty: Easy5. Carrying excessive inventory can help counter demand volatility when newproducts come on the market.Answer: FalseDifficulty: Moderate6. The appropriate level of safety inventory is determined by the uncertainty of bothdemand and supply and the desired level of cycle inventory.Answer: FalseDifficulty: Moderate7. As the uncertainty of supply or demand grows, the required level of safetyinventories increases.Answer: TrueDifficulty: Moderate8. As the desired level of product availability increases, the required level of s afetyinventory decreases.Answer: FalseDifficulty: Easy9. Lead time is the gap between when an order is placed and when it is r eceived.Answer: TrueDifficulty: Easy10. The coefficient of variation measures the size of the relative certainty of cycleinventory.Answer: FalseDifficulty: Easy11. Product availability reflects a firm’s ability to fill a customer order out of availableinventory.Answer: TrueDifficulty: Moderate12. Order fill rate is the fraction of product demand that is satisfied from product ininventory.Answer: FalseDifficulty: Moderate13. Product fill rate is the fraction of product demand that is satisfied from product ininventory.Answer: TrueDifficulty: Moderate14. The distinction between product fill rate and order fill rate is significant in a singleproduct situation.Answer: FalseDifficulty: Hard15. Tracking order fill rates is important when customers place a high value on theentire order being filled simultaneously.Answer: TrueDifficulty: Easy16. With continuous review, inventory is continuously tracked and an order for a lotsize Q is placed at regular intervals of time.Answer: FalseDifficulty: Hard17. With periodic review, inventory status is checked at regular intervals and an orderis placed to raise the inventory level to a specified threshold.Answer: TrueDifficulty: Hard18. The expected shortage per replenishment cycle (ESC) is the average units ofdemand that are satisfied from inventory in stock per replenishment cycle.Answer: FalseDifficulty: Hard19. A shortage occurs in a replenishment cycle only if the demand during the leadtime exceeds the ROP.Answer: TrueDifficulty: Moderate20. The fill rate increases and the cycle service level decreases as the safetyinventory is increased.Answer: FalseDifficulty: Moderate21. For the same safety inventory, an increase in lot size increases the fill rate butnot the cycle service level.Answer: TrueDifficulty: Hard22. The required safety inventory grows rapidly with a decrease in the desiredproduct availability.Answer: FalseDifficulty: Easy23. The required safety inventory increases with an increase in the lead time and thestandard deviation of periodic demand.Answer: TrueDifficulty: Easy24. A goal of any supply chain manager is to reduce the level of safety inventoryrequired regardless of the affect product availability.Answer: FalseDifficulty: Easy25. In most supply chains, the key to reducing the underlying forecast uncertainty isto link all forecasts throughout the supply chain to customer demand data.Answer: TrueDifficulty: Moderate26. A reduction in supply can help dramatically reduce safety inventory requiredwithout hurting product availability.Answer: FalseDifficulty: Moderate27. Aggregation reduces the standard deviation of demand only if demand acrossthe regions being aggregated is not perfectly positively correlated.Answer: TrueDifficulty: Moderate28. In case demand in different geographical regions is about the same size andindependent, aggregation increases safety inventory by the square root of thenumber of areas aggregated.Answer: FalseDifficulty: Moderate29. If aggregation reduces the required safety inventory for a product by a smallamount, it may be best to carry the product in multiple decentralized locations t o reduce response time and transportation cost.Answer: TrueDifficulty: Moderate30. The lower the coefficient of variation of an item, the greater the reduction insafety inventories as a result of centralization.Answer: FalseDifficulty: Hard31. Manufacturer-driven substitution increases overall profitability for themanufacturer by allowing some aggregation of demand, which reduces theinventory requirements for the same level of availability.Answer: TrueDifficulty: Moderate32. Postponement allows the supply chain to delay product differentiation, whichresults in disaggregating most of the inventories in the supply chain. Answer:FalseDifficulty: Moderate33. Periodic review policies require more safety inventory than continuous reviewpolicies for the same level of product availability.Answer: TrueDifficulty: Easy34. When using a continuous review policy, a manager has to account for theuncertainty of demand during the lead time and the review interval.Answer: FalseDifficulty: EasyMultiple Choice1. Inventory carried for the purpose of satisfying demand that exceeds the amountforecasted for a given period isa. cycle inventory.b. demand inventory.c. safety inventory.d. security inventory.e. all of the aboveAnswer: cDifficulty: Easy2. Safety inventory is carried becausea. demand forecasts are accurate.b. demand forecasts are uncertain.c. adequate supplies are available.d. excess product was manufactured.e. forecast demand exceeds the actual demand.Answer: b Difficulty:Moderate3. The trade-off that a supply chain manager must consider when planning safetyinventory isa. increasing product availability versus increasing inventory holding costs.b. decreasing product availability versus decreasing inventory holding costs.c. increasing product availability versus raising the level of safety inventory.d. decreasing product availability versus decreasing the level of safetyinventory.e. none of the aboveAnswer: aDifficulty: Moderate4. The issue of product availability and the level of safety inventory is particularlysignificant in industries wherea. product life cycles are short and demand is stable.b. product life cycles are short and demand is very volatile.c. product life cycles are long and demand is stable.d. product life cycles are long and demand is very volatile.e. a and b onlyAnswer: b Difficulty:Moderate5. A key to success at which company has been its ability to provide a high level ofproduct availability to customers while carrying very low levels of safety inventory in its supply chain?a. Compaqb. Hewlett-Packardc. Delld. Packard-Belle. all of the aboveAnswer: cDifficulty: Moderate6. What key question(s) need(s) to be considered when planning safety inventoryfor any supply chain?a. What is the appropriate lead time to establish?b. What is the appropriate level of safety inventory to carry?c. What actions can be taken to improve product availability while reducingsafety inventory?d. a and b onlye. b and c onlyAnswer: e Difficulty:Moderate7. The appropriate level of safety inventory is determined bya. the uncertainty of both demand and supply.b. the desired level of product availability.c. the desired level of cycle inventory.d. the processes in a supply chain are divided into 2 categories dependingall of the abovee. a and b onlyAnswer: e Difficulty:Moderate8. As the uncertainty of supply or demand grows, the required level of safetyinventoriesa. decreases.b. increases.c. remains stable.d. both a and be. none of the aboveAnswer: bDifficulty: Moderate9. As the desired level of product availability increases, the required level of s afetyinventorya. decreases.b. increases.c. remains stable.d. both a and be. none of the aboveAnswer: eDifficulty: Moderate10. Lead time is the gap betweena. when an order is placed and when it is received.b. when an order is received and when it is put away.c. when an order is received and when it is used.d. when an order is acknowledged and when it is received.e. none of the aboveAnswer: aDifficulty: Easy11. The coefficient of variation measuresa. the accuracy of the demand forecast.b. the size of the uncertainty relative to demand.c. the relevance of cycle inventory to demand.d. the relative certainty of the forecast.e. none of the aboveAnswer: bDifficulty: Moderate12. Which of the following is not a measure of product availability?a. customer fill rateb. product fill ratec. order fill rated. cycle service level (CSL)e. none of the aboveAnswer: aDifficulty: Moderate13. The fraction of orders that are filled from available inventory is thea. customer fill rate.b. product fill rate.c. order fill rate.d. cycle service level (CSL).e. none of the aboveAnswer: cDifficulty: Easy14. The fraction of product demand that is satisfied from product in inventory is thea. customer fill rate.b. product fill rate.c. order fill rate.d. cycle service level (CSL).e. none of the aboveAnswer: bDifficulty: Easy15. The fraction of replenishment cycles that end with all the customer demand beingmet is thea. customer fill rate.b. product fill rate.c. order fill rate.d. cycle service level (CSL).e. none of the aboveAnswer: dDifficulty: Easy16. If a customer order arrives when product is not availablea. a sale results.b. the retailer allocates product to the customer.c. a stockout results.d. the order is filled from safety inventory.e. none of the aboveAnswer: cDifficulty: Moderate17. The distinction between product fill rate and order fill rate isa. not significant in a single product situation.b. significant in a single product situation.c. not significant when a firm is selling multiple products.d. significant when a firm is selling multiple products.e. both a and dAnswer: aDifficulty: Moderate18. A replenishment policya. consists of decisions regarding when to reorder and how much to reorder.b. determines the cycle and safety inventories along with the fr and the CSL.c. may take several forms.d. All of the above are true.e. None of the above are true.Answer: dDifficulty: Moderate19. A company that tracks inventory and places an order for a lot size Q when theinventory declines to the reorder point (ROP) is usinga. continuous review.b. daily review.c. occasional review.d. periodic review.e. none of the aboveAnswer: aDifficulty: Easy20. A company that checks inventory status at regular periodic intervals and placesan order to raise the inventory level to a specified threshold is usinga. continuous review.b. daily review.c. occasional review.d. periodic review.e. none of the aboveAnswer: dDifficulty: Moderate21. Which of the following is correct?a. Average inventory = cycle inventory + safety inventoryb. Average inventory = cycle inventory - safety inventoryc. Average inventory = cycle inventory x safety inventoryd. Average inventory = cycle inventory / safety inventorye. none of the aboveAnswer: aDifficulty: Easy22. The expected shortage per replenishment cycle (ESC) isa. the units of demand that are not satisfied from inventory in stock in agiven replenishment cycle.b. the units of demand that are satisfied from inventory in stock in a givenreplenishment cycle.c. the average units of demand that are not satisfied from inventory in stockper replenishment cycle.d. the average units of demand that are satisfied from inventory in stock perreplenishment cycle.e. none of the aboveAnswer: cDifficulty: Moderate23. The product fill rate (fr) is thus given bya. fr = 1 –ESC/Q + (Q – ES C)/Q.b. fr = 1 –ESC/Q – (Q – ES C)/Q.c. fr = 1 + ESC/Q = (Q + ES C)/Q.d. fr = 1 –ESC/Q = (Q – ES C)/Q.e. none of the aboveAnswer: dDifficulty: Hard24. Given a lot size of Q (which is also the average demand in a replenishmentcycle)a. the fraction of demand lost is thus ESC + Q.b. the fraction of demand lost is thus ESC –Q.c. the fraction of demand lost is thus ESC/Q.d. the fraction of demand lost is thus ESC x Q.e. none of the aboveAnswer: cDifficulty: Hard25. A shortage occurs in a replenishment cyclea. only if the demand during the lead time exceeds the ROP.b. only if the demand during the lead time is less than the ROP.c. only if the demand during the lead time exceeds the average demand.d. only if the demand during the lead time is less than the average demand.e. none of the aboveAnswer: aDifficulty: Moderate26. As the safety inventory is increaseda. fill rate increases and cycle service level decreases.b. fill rate decreases and cycle service level increases.c. both fill rate and cycle service level increase.d. both fill rate and cycle service level decrease.e. none of the aboveAnswer: cDifficulty: Moderate27. For the same safety inventory, an increase in lot sizea. decreases the fill rate but not the cycle service level.b. increases the fill rate but not the cycle service level.c. decreases both the fill rate and the cycle service level.d. increases both the fill rate and the cycle service level.e. none of the aboveAnswer: cDifficulty: Hard28. The expected shortage per replenishment cycle is shown asa. ESC = (1 + fr)Q.b. ESC = (1 –fr)Q.c. ESC = (1 + fr)/Q.d. ESC = (1 –fr)/Q.e. none of the aboveAnswer: bDifficulty: Hard29. The required safety inventorya. grows rapidly with a decrease in the desired product a vailability.b. grows rapidly with an increase in the desired product availability.c. decreases with an increase in the desired product a vailability.d. remains stable with an increase in the desired product availability.e. none of the aboveAnswer: bDifficulty: Moderate30. The required safety inventorya. increases with an increase in the lead time and the standard deviation ofperiodic demand.b. decreases with an increase in the lead time and the standard deviation ofperiodic demand.c. remains stable with an increase in the lead time and the standarddeviation of periodic demand.d. increases with a decrease in the lead time and the standard deviation ofperiodic demand.e. none of the aboveAnswer: dDifficulty: Moderate31. A goal of any supply chain manager is toa. increase the level of safety inventory required in a way that does notadversely affect product availability.b. increase the level of safety inventory required regardless of the effect onproduct availability.c. reduce the level of safety inventory required regardless of the effect onproduct availability.d. reduce the level of safety inventory required in a way that does notadversely affect product availability.e. none of the aboveAnswer: dDifficulty: Moderate32. Which of the following is not an approach to reduce the level of safety inventoryrequired in a way that does not adversely affect product availability?a. Reduce the supplier lead time.b. Reduce the underlying uncertainty of demand.c. Reduce the cost of material coming from suppliers.d. All of the above are approaches.e. None of the above are approaches.Answer: cDifficulty: Hard33. Often, safety inventory calculations in practicea. do not include any measure of supply uncertainty, resulting in levels thatmay be higher than required.b. do not include any measure of supply uncertainty, resulting in levels thatmay be lower than required.c. include measures of supply uncertainty, resulting in levels that may behigher than required.d. include any measures of supply uncertainty, resulting in levels that maybe lower than required.e. None of the above are accurate.Answer: bDifficulty: Hard34. Aggregation reduces the standard deviation of demanda. only if demand across the regions being aggregated is perfectly positivelycorrelated.b. only if demand across the regions being aggregated is not p erfectlypositively correlated.c. even if demand across the regions being aggregated is not p erfectlypositively correlated.d. whenever demand across the regions being aggregated is not perfectlypositively correlated.e. All of the above are accurate.Answer: bDifficulty: Hard35. If the number of independent stocking locations decreases by a factor of n, theaverage safety inventory is expected toa. decrease by a factor of √n.b. decrease by a factor of n.c. increase by a factor of √n.d. increase by a factor of n.e. None of the above are accurate.Answer: aDifficulty: Moderate36. Which of the following is not a major disadvantage of aggregating all inventory inone location?a. Increase in forecast accuracy of customer demand.b. Increase in response time to customer order.c. Increase in transportation cost to customer.d. All of the above are disadvantages.e. All of the above are advantages.Answer: aDifficulty: Easy37. Which of the following is not a method by which a supply chain can extract thebenefits of aggregation without having to physically centralize all inventories inone location?a. information centralizationb. specializationc. product substitutiond. component differentiatione. postponementAnswer: dDifficulty: Moderation38. Which approach to aggregation requires an information system that allowsaccess to current inventory records from each location?a. information centralizationb. specializationc. product substitutiond. component commonalitye. postponementAnswer: aDifficulty: Easy39. Which approach to aggregation would stock the fast-moving items atdecentralized locations close to the customer and slow-moving items at acentralized location?a. information centralizationb. specializationc. product substitutiond. component commonalitye. postponementAnswer: b Difficulty:Moderate40. The use of one product to satisfy demand for a different product isa. information centralization.b. specialization.c. product substitution.d. component commonality.e. postponement.Answer: cDifficulty: Easy41. Which use of common components in a variety of products has been a veryeffective supply chain strategy to exploit aggregation and reduce componentinventories?a. information centralizationb. specializationc. product substitutiond. component commonalitye. postponementAnswer: aDifficulty: Easy42. The ability of a supply chain to delay product differentiation or customization u ntilcloser to the time the product is sold isa. information centralization.b. specialization.c. product substitution.d. component commonality.e. postponement.Answer: e Difficulty:Moderate43. Which approach to aggregation has the goal of moving product differentiation asclose to the pull phase of the supply chain as possible?a. information centralizationb. specializationc. product substitutiond. component commonalitye. postponementAnswer: e Difficulty:Moderate44. Periodic review policies for inventory replenishment require safety inventory tocover demand duringa. lead time only.b. the review interval only.c. both lead time and the review interval.d. neither lead time or the review interval.e. lead time when it exceeds the review interval.Answer: cDifficulty: Moderate45. Continuous review policies for inventory replenishment require safety inventory tocover demand duringa. lead time only.b. the review interval only.c. both lead time and the review interval.d. neither lead time or the review interval.e. lead time when it exceeds the review interval.Answer: aDifficulty: Moderate46. Periodic review policies requirea. more safety inventory than continuous review policies for the same levelof product availability.b. less safety inventory than continuous review policies for the same level ofproduct availability.c. the same safety inventory as continuous review policies for the samelevel of product availability.d. no more safety inventory than continuous review policies for the samelevel of product availability.e. none of the aboveAnswer: aDifficulty: Moderate47. All inventory between a given stage in the supply chain and the final customer iscalled thea. cycle inventory.b. demand inventory.c. echelon inventory.d. safety inventory.e. none of the aboveAnswer: cDifficulty: Hard48. A distributor should decide his safety inventory levels based ona. the level of safety inventory carried by all retailers supplied by him.b. the level of safety inventory carried by other distributors.c. the level of safety inventory carried by manufacturers supplying him.d. the level of cycle inventory carried by all retailers supplied by him.e. the level of cycle inventory carried by other distributors.Answer: aDifficulty: Hard49. As retailers decrease the level of safety inventory they carry, the distributor willhave toa. decrease his or her safety inventory.b. increase his or her safety inventory.c. keep his or her safety inventory at the same level.d. increase his or her cycle inventory.e. decrease his or her cycle inventory.Answer: bDifficulty: HardEssay/Problems1. Discuss the role of safety inventory in the supply chain and the trade-offsinvolved.Answer: The primary role of safety inventory is providing product availability forcustomers when demand and supply are uncertain. The trade-off that a supplychain manager must consider when planning safety inventory involve productavailability and inventory holding costs. On one hand, raising the level of safetyinventory increases product availability and thus the margin captured fromcustomer purchases. On the other hand, raising the level of safety inventoryincreases inventory holding costs. This issue is particularly significant inindustries where product life cycles are short and demand is very volatile.Carrying excessive inventory can help counter demand volatility but can reallyhurt if new products come on the market and demand for the product in inventory dries up. The inventory on hand then becomes worthless.In today’s business environment, firms experience great pressure to improveproduct availability while increasing product variety through customization. As aresult, markets have become increasingly heterogeneous and demand forindividual products is very unstable and difficult to forecast. Both the increasedvariety and the increased pressure for availability push firms to increase the level of safety inventory they hold.At the same time, product life cycles have shrunk. This increases the risk to firms of carrying too much inventory. Thus, a key to the success of any supply chain is to figure out ways to decrease the level of safety inventory carried without hurting the level of product availability.Difficulty: Hard2. Discuss the various measures of product availability.Answer: Product availability reflects a firm’s ability to fill a customer order out ofavailable inventory. A stockout results if a customer order arrives when product is not available. There are several ways to measure product availability. Allavailability measures are defined on average over a given time frame, which can range from hours to a year.Product fill rate (fr) is the fraction of product demand that is satisfied from product in inventory. It is equivalent to the probability that product demand is suppliedfrom available inventory.Order fill rate is the fraction of orders that are filled from available inventory. In a multi-product scenario, an order is filled from inventory only if all products in theorder can be supplied from the available inventory. Order fill rates tend to belower than product fill rates because all products must be in stock for an order to be filled.Cycle service level (CSL) is the fraction of replenishment cycles that end with all the customer demand being met. A replenishment cycle is the interval betweentwo successive replenishment deliveries. The CSL is equal to the probability ofnot having a stockout in a replenishment cycle. Observe that a CSL of 60 percent will typically result in a much higher fill rate.The distinction between product fill rate and order fill rate is not significant in asingle product situation. When a firm is selling multiple products, however, thisdifference may be significant. For example, if most orders include 10 or moredifferent products that are to be shipped, an out-of-stock situation of one product results in the order not being filled from stock. The firm in this case may have apoor order fill rate even though it has good product fill rates. Tracking order fillrates is important when customers place a high value on the entire order beingfilled simultaneously.Difficulty: Moderate3. Describe the two types of ordering policies and the impact each has on safetyinventory.Answer: A replenishment policy consists of decisions regarding when to reorderand how much to reorder. These decisions determine the cycle and safetyinventories along with the fr and the CSL. There are several forms thatreplenishment policies may take. We restrict attention to two instances:1. Continuous review: Inventory is continuously tracked and an order for a lotsize Q is placed when the inventory declines to the reorder point (ROP). The time between orders may fluctuate given variable demand. When using a continuousreview policy, a manager has to account only for the uncertainty of demandduring the lead time (L).2. Periodic review: Inventory status is checked at regular periodic intervals andan order is placed to raise the inventory level to a specified threshold. In thiscase, the time between orders is fixed. The size of each order, however, can。

《供应链与物流管理》练习题-带答案

《供应链与物流管理》练习题年级专业：_ 姓名：__ __学号：_一、名词1、供应物流：供应物流是从买方角度考虑的物流，具体指生产企业、流通企业或消费者采购时，购入原材料、零部件或商品，有生产地向消费地流动过程所产生的物流。

P122、供应链：供应链是指从供应商到厂商一直到最终用户所形成的一个链条。

P373、数码仓库：数码仓库是指利用现代信息技术、网络技术以及计算机技术等对商品进行存储与管理的仓库。

P814、大陆桥：是以大陆为桥进行运输，它是国际联运中必然形成的一种复合运输形式。

包括西伯利亚大陆桥、美洲大陆桥和小陆桥运输三条线路。

P1755、第三方物流模式：第三方是指为交易双方提供不封或者全部物流服务的一方，第三方物流模式就是指交易双方把自己需要完成的物流业务委托给第三方来完成的物流运作模式。

P194二、填空题1、物流时间价值具体体现在：缩短时间、弥补时间差。

P52、现代物流管理的原则有：标准化原则、服务原则、信息化原则、现代化原则。

P25-263、供应链管理协调机制包括战略计划的协调机制、营运计划的协调机制、环境的协调机制三方面内容。

P524、按照库存目的来划分，库存包括周转库存、安全库存、季节性储备三种。

P855、配送的主要目标包括快速响应、最低库存、整合运输三方面.。

P1156、物流中心按照功能划分，包括集货中心、配送中心、集配中心。

P1367、MRP的输入系统有主生产计划MPS、物料清单BOM、库存状态记录ISR三个部分构成。

P272三、多选题1、现代物流的组织模式主要有（A B C）P29A. 集权型的集中管理组织模式B. 分权型的分散管理组织模式C. 集权与分权相结合的管理组织模式D. 物流子公司结构形式2、反应性供应链适用于（A B C D E）的情形。

P48A. 需求预测查B、错误率较高C、产品周期短D、新产品引进频繁E、产品多样性强3、供应链管理的运行机制包括（A B C D E ）P49-56A、协调机制B、信任机制C、信息共享机制D、激励机制E、利益关系机制4、国际物流的特点主要有（A B C D ）A. 国际性B、复杂性C、风险性D、运输方式以海运为主5、JIT的实行条件包括（A B C D ）A、畅顺的供销体系B、顾客的需求信息C、完善的物流体系D、优秀人力资源四、判断题1. 物流冰山理论指现行的财务会计制度和核算方法不能掌握物流费用的实际情况，有许多物流费用并没有准确统计。