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WorksheetsPOST-TEST ADVANCED INVENTORY CONTROL
Total questions: 50
Worksheet time: 25mins
51. When solving the Quantity Discount Model, if the calculated EOQ for a specific price level is below the minimum order quantity required to obtain that discount, what is the next step?
A. Recompute the EOQ using the next lower price level.
B. Use the original (no discount) EOQ as the optimal quantity.
C. Adjust the order quantity to the minimum quantity required for the discount.
D. Recalculate the holding cost using the higher purchase price.
52. In a Quantity Discount scenario, what is the total cost formula that must be calculated for each feasible option?
A. $TC = \text{Ordering Cost} + \text{Holding Cost}$
B. $TC = \text{Material Cost} + \text{Ordering Cost} + \text{Holding Cost}$
C. $TC = \text{Material Cost} + \text{Ordering Cost} + \text{Shortage Cost}$
D. $TC = \text{Ordering Cost} + \text{Carrying Cost} + \text{Setup Cost}$
53. Safety Stock (SS) is calculated using the formula $SS = Z \times \sigma_{LTD}$. What does the variable $Z$ represent?
A. The number of cycles per year.
B. The total inventory turnover.
C. The number of standard deviations corresponding to the target service level.
D. The lead time in days.
54. For a target Cycle Service Level (CSL) of 95%, what Z-value is typically used in the safety stock calculation?
A. 1.00
B. 1.28
C. 1.65
D. 2.33
55. In a probabilistic Reorder Point (ROP) model, the formula is $ROP = \mu_{LTD} + SS$. What does $\mu_{LTD}$ represent?
A. The standard deviation of lead-time demand.
B. The optimal order quantity.
C. The expected (mean) demand during lead time.
D. The minimum order quantity.
56. What is the fundamental trade-off in Service Level Optimization?
A. Inventory Turnover vs. Days on Hand.
B. Production Rate vs. Daily Demand.
C. Holding Cost vs. Stockout Cost.
D. Purchase Cost vs. Ordering Cost.
57. When determining the optimal service level, the marginal cost comparison suggests increasing safety stock until:
A. The marginal cost of holding inventory equals the total annual cost.
B. Marginal savings from avoiding stockouts equals marginal cost of holding inventory.
C. The Z-value reaches its maximum of 3.0.
D. Total cost is greater than the total revenue.
58. What is the standard deviation of lead-time demand ($\sigma_{LTD}$) if the daily demand standard deviation ($\sigma_d$) is 20 units and the lead time ($L$) is a constant 5 days?
A. 20 units
B. 100 units
C. $20 \times \sqrt{5} \approx 44.72$ units
D. $5 \times 20 = 100$ units
59. Industries that require an extremely high service level, such as Pharmaceuticals, typically target a Fill Rate in the range of:
A. 85-95%
B. 95-98%
C. 99-99.9%
D. Below 85%
60. The "Role of the Normal Distribution" in probabilistic safety stock calculation is justified by the:
A. Newsvendor Model.
B. Economic Order Quantity formula.
C. Central Limit Theorem.
D. ABC Classification.
61. A key advantage of the (Q, r) Continuous Review System is:
A. It requires less administrative and tracking cost than periodic review.
B. It can operate with lower average inventory and safety stock.
C. It is better suited for low-value, high-volume items.
D. Inventory is only monitored at fixed time intervals.
62. In the Periodic Review Model (P, S), the order size ($Q$) is determined by which formula?
A. $Q = ROP \times L$
B. $Q = S - IP$ (Order-up-to level minus Inventory Position)
C. $Q = EOQ$
D. $Q = D/P$
63. Which cost in the Newsvendor Model is equivalent to the profit lost per unit of unmet demand?
A. Overage Cost ($C_o$)
B. Holding Cost ($C_h$)
C. Underage Cost ($C_u$)
D. Ordering Cost ($C_o$)
64. The Critical Ratio (CR) in the Newsvendor Model is calculated as:
A. $CR = \frac{C_o}{C_u + C_o}$
B. $CR = \frac{C_u}{C_u + C_o}$
C. $CR = C_u \times C_o$
D. $CR = C_u - C_o$
65. A high Overage Cost ($C_o$) relative to the Underage Cost ($C_u$) in the Newsvendor Model would lead the business to choose:
A. A higher optimal order quantity.
B. A lower optimal service level (CR).
C. An order quantity equal to the mean demand.
D. An infinite order quantity.
66. Multi-Echelon Inventory Management focuses on the coordination and optimization of inventory decisions across:
A. Multiple departments within one location.
B. A single warehouse floor.
C. Multiple levels (stages) of a supply chain network.
D. Multiple suppliers for a single item.
67. What does Echelon Inventory for a Central Distribution Center (CDC) include?
A. Only the stock held at the CDC itself.
B. Only the stock held at the manufacturing plant.
C. The CDC's own stock plus all stock at downstream locations (e.g., retail outlets).
D. The total annual sales volume.
68. In a Pull System, inventory flows are triggered by:
A. Aggregate long-term forecasts from headquarters.
B. Orders or withdrawals based on actual consumption from downstream locations.
C. Production schedules at the upstream factory.
D. Fixed, predetermined shipment schedules.
69. A supply chain strategy where upstream facilities operate on Push (based on forecasts) and downstream nodes operate on Pull (based on actual sales data) is known as:
A. Pure Pull System
B. Pure Push System
C. Hybrid Push-Pull System
D. Single-Echelon System
70. Distribution Requirements Planning (DRP) is best described as the distribution counterpart of which manufacturing planning system?
A. Warehouse Management System (WMS)
B. Enterprise Resource Planning (ERP)
C. Material Requirements Planning (MRP)
D. Sales and Operations Planning (S&OP)
71. The cascading process of DRP Planning Logic flows in which direction?
A. From Factory to Central DC to Retail.
B. From Retail to Central DC to Factory.
C. From Supplier to Raw Material to Finished Goods.
D. From Management to Finance to Operations.
72. The concept of Inventory Pooling exploits the statistical effect that:
A. Cost of goods sold is constant regardless of location.
B. Combined demand variability across locations is lower than the sum of individual variabilities.
C. Transportation costs are always lower with centralized inventory.
D. Service level targets must be identical for all locations.
73. What is the difference between Physical Pooling and Virtual Pooling?
A. Physical pooling uses RFID; Virtual pooling uses barcodes.
B. Physical pooling centralizes the stock; Virtual pooling centralizes the information.
C. Physical pooling is for A-items; Virtual pooling is for C-items.
D. Physical pooling is for one product; Virtual pooling is for multiple products.
74. Vendor-Managed Inventory (VMI) is an example of which multi-echelon mechanism?
A. Physical Pooling
B. Product Pooling
C. Risk Sharing
D. Deterministic ROP
75. A disadvantage of a Push System in inventory management is:
A. It is difficult to adapt to sudden demand fluctuations, leading to higher risk of overstock.
B. It requires reliable information sharing in real-time.
C. It cannot utilize economies of scale in transportation.
D. It has a high cost of tracking and monitoring.
76. What is the primary benefit of integrating ERP and WMS systems?
A. Eliminates all carrying costs.
B. Ensures consistency between physical inventory and system records for accurate replenishment.
C. Automates supplier contract negotiation.
D. Replaces the need for any manual labor in the warehouse.
77. Which function is typically managed by a Warehouse Management System (WMS) rather than a high-level ERP system?
A. Material requirement calculation.
B. Inventory valuation and cost control.
C. Optimization of picking routes and storage locations.
D. Demand forecasting and planning.
78. What key benefit does the non-line-of-sight capability of RFID provide over traditional barcodes?
A. More accurate price tracking.
B. Bulk reading of multiple items simultaneously.
C. Lower unit cost for the tag itself.
D. Elimination of all theft.
79. The use of IoT sensors and automated reorder point triggers falls under which category of technology-driven inventory control?
A. Descriptive Analytics
B. Automation in Inventory Replenishment
C. Warehouse Management System (WMS) Definition
D. Financial Auditing
80. Predictive Analytics in inventory control is primarily used to:
A. Describe what happened in the past (e.g., past sales trends).
B. Suggest optimal decisions (e.g., optimal order quantity).
C. Forecast future variables like demand, lead-time variability, and stockout risk.
D. Consolidate financial data across departments.
81. An inventory dashboard that displays On-hand inventory levels, Stockout alerts, and Reorder point indicators primarily provides which benefit?
A. Legal compliance.
B. Enhanced situational awareness and faster decision-making.
C. Reduction in all overhead expenses.
D. Automated procurement.
82. Machine learning models for demand forecasting and Optimization algorithms for replenishment are examples of:
A. Automation Technologies.
B. Advanced Analytics Enablers.
C. Deterministic Inventory Models.
D. Legacy Systems.
83. The process of using Barcode-based receiving and issuing is a core function designed to primarily achieve which WMS benefit?
A. Higher inventory accuracy.
B. Lower storage cost.
C. Faster supplier payments.
D. Improved energy efficiency.
84. What is the purpose of Prescriptive Analytics in inventory control?
A. To summarize past sales data.
B. To forecast future demand.
C. To suggest optimal decisions on replenishment, stock levels, and distribution.
D. To track goods movement within the warehouse.
85. The ability of an ERP system to track Purchase Order Management and Material Requirement Calculation falls under its role in:
A. Labor Productivity Tracking.
B. Anti-Theft and Shrinkage Control.
C. Inventory-related Planning and Tracking.
D. Financial Auditing and Taxes.
86. A company calculates its Inventory Turnover to be 5. This means:
A. They place 5 orders per year.
B. The average inventory is 5 units.
C. They sold or used their average inventory 5 times during the period.
D. Their Days on Hand (DOH) is 5 days.
87. Which of the following is NOT typically a component of Carrying Cost ($C_h$)?
A. Cost of money or capital.
B. Depreciation and deterioration cost.
C. Taxes and insurance costs.
D. Transportation and freight costs.
88. In the ABC/XYZ Analysis matrix, a Category AX item would have a management strategy focused on:
A. Loose control, bulk buying, minimal monitoring.
B. Very tight, highly accurate control, and low safety stock.
C. Moderate control, periodic review.
D. Immediate liquidation to avoid obsolescence.
89. An item classified as CZ (Low value, unpredictable demand) should typically follow which inventory strategy?
A. Tightest control, high service level.
B. Bulk buying acceptable.
C. Careful review, avoid overstock.
D. Avoid stocking unless strategically necessary.
90. If an organization's Days on Hand (DOH) increases significantly, what is the most likely managerial implication?
A. Better cash flow due to reduced capital investment.
B. Reduced holding costs.
C. Increased risk of obsolescence and higher carrying costs.
D. Improved customer service level.
91. Inventory Valuation and Cost Control is a key role that which technology system plays in inventory management?
A. Radio Frequency Identification (RFID)
B. Warehouse Management System (WMS)
C. Enterprise Resource Planning (ERP)
D. Automated Storage and Retrieval Systems (AS/RS)
92. If the Fill Rate is 90%, it means that the company is failing to meet $10\%$ of its total demand immediately. This unfulfilled demand will likely result in:
A. Lower ordering costs.
B. Higher stockout costs (lost sales, backorder penalties).
C. Decreased inventory turnover.
D. Increased average inventory.
93. The purpose of ABC/XYZ analysis is to enable:
A. Uniform inventory policies for all items.
B. Segmented inventory policies based on value and variability.
C. Simplification of the EOQ formula.
D. Outsourcing of all inventory functions.
94. What is the benefit of a Lower overall system inventory in a multi-echelon approach?
A. Increased lead time variability.
B. Reduced stockouts at the retail level.
C. Lower total system-wide inventory cost.
D. More duplicated safety stocks.
95. The primary goal of Inventory Control is to:
A. Maximize the purchase cost.
B. Minimize the total inventory costs.
C. Maximize stockouts.
D. Maintain the highest possible inventory level at all times.
96. The On-Shelf Availability metric is most important for:
A. Determining the optimal production run quantity.
B. Measuring the fraction of time that inventory is available for use or sale (Ready Rate).
C. Calculating the total annual ordering cost.
D. Determining the number of orders per year.
97. Inventory Decoupling is intended to:
A. Separate inventory decisions from pricing decisions.
B. Separate the stages of a production process to prevent one stage's breakdown from hampering others.
C. Separate physical inventory from virtual inventory.
D. Separate the demand forecast from the actual demand.
98. The Horizontal Smoothing Forecast model gives higher weights to:
A. The oldest demand history.
B. The most recent demand history.
C. The standard deviation of the forecast error.
D. The total annual demand.
99. What inventory-related problem is solved by Inventory Pooling?
A. Excessive ordering cost.
B. High transportation cost.
C. Mitigating high demand variability and reducing overall safety stock.
D. Low inventory turnover.
100. Predictive Analytics helps in setting the safety stock level by forecasting which key input variable?
A. The annual ordering cost.
B. The annual carrying cost percentage.
C. The lead time and demand variability.
D. The price of the product.
