CPIM – Certified in Planning and Inventory Management — Questions and Answers

Question 1: What is the key principle behind 'vendor-managed inventory' (VMI)?

The customer manages the supplier's production schedule
The customer pre-pays for inventory held at the supplier's facility
The customer and supplier share ownership of inventory in transit
The supplier monitors the customer's inventory levels and takes responsibility for replenishment decisions (Correct answer)

Correct answer: The supplier monitors the customer's inventory levels and takes responsibility for replenishment decisions

In VMI, the supplier has access to the customer's inventory data and is responsible for maintaining agreed-upon stock levels, reducing the customer's ordering burden and improving replenishment efficiency.

Question 2: What is the primary benefit of Collaborative Planning, Forecasting, and Replenishment (CPFR)?

It automates purchase order generation without human intervention
It eliminates the need for safety stock across the supply chain
It standardizes product packaging across all supply chain members
It improves forecast accuracy and reduces inventory by sharing demand data between trading partners (Correct answer)

Correct answer: It improves forecast accuracy and reduces inventory by sharing demand data between trading partners

CPFR enables retailer and supplier to jointly develop forecasts and replenishment plans, reducing forecast errors and supply chain inefficiencies.

Question 3: In supply chain strategy, 'supply chain agility' is best defined as:

The ability to respond rapidly and cost-effectively to unpredictable changes in demand or supply (Correct answer)
The ability to operate at the lowest possible cost
The use of automation to replace manual labor
The speed at which goods move through a distribution center

Correct answer: The ability to respond rapidly and cost-effectively to unpredictable changes in demand or supply

Supply chain agility is the capability to quickly reconfigure supply chain resources and processes in response to unexpected disruptions or market opportunities.

Question 4: What is 'new product forecasting' most challenging because of?

The absence of historical demand data for the new item (Correct answer)
The high cost of market research
The instability of supplier prices
The complexity of the bill of materials

Correct answer: The absence of historical demand data for the new item

New product forecasting is challenging because there is no historical sales data, requiring market research, analogous product analysis, or expert judgment.

Question 5: What does 'available-to-promise' (ATP) tell a sales representative?

The current on-hand inventory balance
The maximum production rate for the period
The uncommitted supply that can be allocated to new customer orders (Correct answer)
The reorder point for finished goods

Correct answer: The uncommitted supply that can be allocated to new customer orders

ATP is the quantity of supply not yet committed to customer orders, enabling accurate delivery promises.

Question 6: Which type of supplier relationship involves the highest level of collaboration and information sharing?

Strategic alliance/partnership (Correct answer)
Preferred supplier
Transactional
Competitive bidding

Correct answer: Strategic alliance/partnership

Strategic alliances involve deep collaboration, shared risk, joint planning, and extensive information sharing between supply chain partners.

Question 7: Which of the following best describes a pull system in manufacturing?

Production is scheduled based on a master production schedule
Materials are pushed through the plant based on forecasted demand
Production is triggered by actual downstream demand or consumption (Correct answer)
Work orders are released as soon as capacity becomes available

Correct answer: Production is triggered by actual downstream demand or consumption

A pull system triggers production or material movement based on actual downstream demand, as seen in kanban systems, rather than a forecast-driven push.

Question 8: Which MRP processing method only recalculates items affected by changes since the last run?

Net-change MRP (Correct answer)
Regenerative MRP
Full-explosion MRP
Planned-order MRP

Correct answer: Net-change MRP

Net-change MRP selectively recalculates only those items whose data has changed, making it faster and suitable for more frequent runs than a full regenerative MRP.

Question 9: What is 'collaborative planning, forecasting, and replenishment' (CPFR)?

A government compliance program
A supply chain practice where trading partners jointly develop forecasts and replenishment plans (Correct answer)
An internal financial planning process
A warehouse management methodology

Correct answer: A supply chain practice where trading partners jointly develop forecasts and replenishment plans

CPFR is a collaborative process in which retailers and suppliers share data and jointly create forecasts and replenishment plans to improve supply chain performance.

Question 10: Which mode of transportation generally offers the lowest cost per ton-mile for bulk commodities over long distances?

Pipeline
Truck (road)
Air freight
Rail (Correct answer)

Correct answer: Rail

Rail transportation offers the lowest cost per ton-mile for heavy bulk commodities over long distances due to high capacity and fuel efficiency, though it is slower and less flexible than trucking.

Question 11: What is 'manufacturing lead time' composed of?

Only run time and setup time
Only queue time and move time
Queue time, setup time, run time, move time, and wait time (Correct answer)
Only transportation and receiving time

Correct answer: Queue time, setup time, run time, move time, and wait time

Manufacturing lead time includes queue, setup, run, move, and wait times for a production order to complete.

Question 12: What is 'option overplanning' in master scheduling?

Carrying extra raw material safety stock
Planning option quantities greater than 100% to account for forecast uncertainty across configurations (Correct answer)
Scheduling more capacity than needed to handle disruptions
Building inventory before a seasonal peak

Correct answer: Planning option quantities greater than 100% to account for forecast uncertainty across configurations

Option overplanning deliberately plans optional features at quantities slightly exceeding 100% to ensure component availability when customer configurations vary.

Question 13: What does a 'tracking signal' in forecasting detect?

The standard deviation of demand
Seasonal patterns in demand
The rate of demand growth
Whether forecasts are consistently biased in one direction (Correct answer)

Correct answer: Whether forecasts are consistently biased in one direction

A tracking signal monitors the cumulative forecast error to detect when a model is consistently over- or under-forecasting.

Question 14: Which term describes the practice of a supplier holding inventory at or near the customer's facility and retaining ownership until the customer uses it?

Safety stock
Kanban replenishment
Consignment inventory (Correct answer)
Vendor-managed inventory (VMI)

Correct answer: Consignment inventory

Consignment inventory means the supplier owns the goods until consumed by the customer, transferring financial risk to the supplier.

Question 15: What is the purpose of a 'poka-yoke' device in manufacturing?

To prevent errors or make defects immediately obvious so they cannot pass undetected (Correct answer)
To calculate the economic order quantity
To accelerate equipment changeovers
To track production output in real time

Correct answer: To prevent errors or make defects immediately obvious so they cannot pass undetected

A poka-yoke (mistake-proofing) device is a mechanism that either prevents an error from occurring or immediately detects and signals it so defects are caught before moving downstream.

Question 16: A company experiences high variability in customer demand. Which inventory replenishment policy best adapts to this variability?

Fixed order interval (FOI)
Fixed order quantity (FOQ)
Lot-for-lot (LFL)
Min-max system (Correct answer)

Correct answer: Min-max system

A min-max (reorder point) system triggers replenishment when stock drops below a minimum level, adapting to demand variability.

Question 17: Which type of inventory is placed between two work centers to allow each operation to run independently at its own rate?

Safety stock
Decoupling (buffer) inventory (Correct answer)
Work-in-process (WIP)
Anticipation inventory

Correct answer: Decoupling (buffer) inventory

Decoupling inventory is positioned between dependent operations to separate them, allowing each work center to operate at its own pace without being constrained by upstream or downstream rates.

Question 18: An assemble-to-order production system's master production schedule contains the following:

Raw materials
Subassemblies (Correct answer)
Standard items
Finished items

Correct answer: Subassemblies

The master production schedule in an assemble-to-order production system includes subassemblies. This is because an assemble-to-order system involves creating final products from a combination of pre-manufactured subassemblies and components. The master production schedule (MPS) outlines the production plan for the subassemblies that will be needed to fulfill customer orders and maintain inventory levels.

Question 19: What is the difference between 'dependent demand' and 'independent demand'?

There is no practical difference
Dependent demand is always more variable than independent demand
Dependent demand comes from customers; independent demand is internally generated
Dependent demand is derived from the demand for a parent item; independent demand comes directly from customers (Correct answer)

Correct answer: Dependent demand is derived from the demand for a parent item; independent demand comes directly from customers

Independent demand comes directly from end customers and must be forecasted; dependent demand is calculated from parent-item production plans using the BOM.

Question 20: The 'cumulative lead time' in MRP is defined as:

The average lead time across all suppliers
The time between MRP runs
The lead time for the longest single operation
The total lead time from ordering the first raw material to delivering the finished product (Correct answer)

Correct answer: The total lead time from ordering the first raw material to delivering the finished product

Cumulative lead time is the longest path through the BOM from raw material procurement to finished goods, determining how far into the future the MPS must be planned.

Question 21: What is a 'tracking signal' used for in forecast monitoring?

To track shipment locations
To detect when forecast errors are accumulating in one direction, signaling bias (Correct answer)
To count inventory transactions
To monitor machine performance

Correct answer: To detect when forecast errors are accumulating in one direction, signaling bias

A tracking signal is calculated by dividing the running sum of forecast errors by MAD; values outside set limits indicate systematic forecast bias.

Question 22: In MRP, 'lot-for-lot' ordering means:

Combining multiple periods' requirements into one order
Ordering a fixed quantity each time
Ordering based on economic order quantity
Ordering exactly the net requirement for each period with no extra (Correct answer)

Correct answer: Ordering exactly the net requirement for each period with no extra

Lot-for-lot (L4L) is an MRP lot-sizing rule that orders exactly the quantity needed each period, minimizing carrying costs but potentially increasing ordering costs.

Question 23: Under the Economic Order Quantity (EOQ) model, what happens to the optimal order quantity if annual demand doubles?

It increases by approximately 41% (Correct answer)
It doubles
It decreases by 50%
It remains the same

Correct answer: It increases by approximately 41%

EOQ is proportional to the square root of demand, so doubling demand increases EOQ by √2 ≈ 1.41.

Question 24: The '5S' methodology in lean operations stands for:

Simplify, Standardize, Synchronize, Streamline, Scale
Strategy, Structure, Systems, Skills, Style
Sort, Set in order, Shine, Standardize, Sustain (Correct answer)
Speed, Safety, Service, Savings, Sustainability

Correct answer: Sort, Set in order, Shine, Standardize, Sustain

The 5S system (Sort, Set in order, Shine, Standardize, Sustain) is a workplace organization method that creates a clean, orderly environment that supports visual management and waste reduction.

Question 25: In manufacturing, 'routing' provides which key information for planning?

The sequence of operations, work centers, and time standards for producing an item (Correct answer)
The list of materials needed to make a product
The supplier list and lead times for raw materials
The customer delivery schedule for finished goods

Correct answer: The sequence of operations, work centers, and time standards for producing an item

A routing defines each operation in the production process, the work center where it is performed, and the setup and run time standards used for scheduling and capacity planning.

Question 26: What does ABC analysis classify inventory items based on?

Lead time from suppliers
Physical size of items
Annual usage value (Correct answer)
Number of suppliers

Correct answer: Annual usage value

ABC analysis classifies inventory items by annual usage value, with A items representing the highest value (roughly 80% of total value) and C items the lowest.

Question 27: What is 'net requirements' in MRP?

The sum of all open purchase orders
Total customer orders received
Forecast demand minus safety stock
Gross requirements minus on-hand inventory and scheduled receipts (Correct answer)

Correct answer: Gross requirements minus on-hand inventory and scheduled receipts

Net requirements are calculated by subtracting available inventory and scheduled receipts from gross requirements.

Question 28: A company is experiencing high levels of work-in-process (WIP) inventory. According to Little's Law, which action would MOST directly reduce WIP?

Increasing throughput rate
Adding more workers to the bottleneck
Increasing batch sizes to improve efficiency
Reducing cycle time in the system (Correct answer)

Correct answer: Reducing cycle time in the system

Little's Law states WIP = Throughput Rate × Cycle Time; reducing cycle time directly reduces WIP for a given throughput rate.

Question 29: What is 'exponential smoothing' and what is the smoothing constant (alpha) used for?

A process for leveling production workloads
A method for averaging supplier prices
A technique for smoothing out manufacturing defects
A forecasting method that weights recent data more heavily; alpha controls how quickly old data is discounted (Correct answer)

Correct answer: A forecasting method that weights recent data more heavily; alpha controls how quickly old data is discounted

Exponential smoothing weights recent observations more heavily than older ones, with a higher alpha giving more weight to the most recent data.

Question 30: A 'push' production system releases work to the shop floor based on:

Available raw material quantities
Customer orders received in real time
A schedule determined in advance by a planning system (Correct answer)
Signals from downstream stations indicating they are ready for more work

Correct answer: A schedule determined in advance by a planning system

In a push system, production is driven by a predetermined schedule (such as MRP-generated work orders) that 'pushes' work through each stage regardless of downstream readiness.

Question 31: The term 'takt time' in lean manufacturing is calculated as:

Customer demand rate divided by available production time
Total production time divided by total units produced
Available production time divided by customer demand rate (Correct answer)
Setup time plus run time per unit

Correct answer: Available production time divided by customer demand rate

Takt time = Available production time / Customer demand rate; it sets the pace of production to match customer demand and avoid overproduction.

Question 32: Which lot-sizing rule minimizes total of ordering and carrying costs by evaluating period-by-period combinations?

Part period balancing (Correct answer)
Period order quantity
Lot-for-lot
Fixed order quantity

Correct answer: Part period balancing

Part period balancing combines periods until accumulated carrying cost approximates the ordering cost, balancing the two types of costs.

Question 33: What are the three primary inputs to Material Requirements Planning (MRP)?

Purchase orders, work orders, and invoices
Sales orders, capacity plan, and supplier contracts
Master production schedule, bill of materials, and inventory records (Correct answer)
Production plan, labor standards, and machine rates

Correct answer: Master production schedule, bill of materials, and inventory records

MRP requires the MPS to define what and when to produce, the BOM to define component relationships, and inventory records to determine what is on hand or on order.

Question 34: What is a Hoshin planning objective?

Focus on the operational plan to remove routine issues that reduce product quality
Target the critical few problems and assign resources to remove barriers for improvement (Correct answer)
Focus on the details of the process in order to better understand what capabilities are required
Solve as many problems as possible by using lean management principals and techniques

Correct answer: Target the critical few problems and assign resources to remove barriers for improvement

Hoshin planning (Hoshin Kanri) is a strategic deployment method focused on the "critical few" breakthrough objectives, concentrating resources on removing barriers to those priorities. The other options describe operational or process-level improvement work, or trying to solve as many problems as possible—the opposite of Hoshin's deliberate focus on a small number of vital goals.

Question 35: What does 'scheduling to the bottleneck' mean in production planning?

Eliminating all non-value-added steps
Scheduling overtime for all workers
Ordering extra materials for the slowest machine
Synchronizing all other operations to the pace of the capacity-constrained resource (Correct answer)

Correct answer: Synchronizing all other operations to the pace of the capacity-constrained resource

Scheduling to the bottleneck means the constraint resource sets the production pace and all other resources align to it.

Question 36: In CPIM strategic management, 'vertical integration' means a company:

Increases the number of product lines offered
Implements enterprise resource planning across all functions
Acquires control of adjacent stages in its supply chain (suppliers or customers) (Correct answer)
Expands geographically into new markets

Correct answer: Acquires control of adjacent stages in its supply chain (suppliers or customers)

Vertical integration is a strategy where a company takes ownership of supply chain stages it previously outsourced, either backward (toward suppliers) or forward (toward customers).

Question 37: Which master scheduling input directly converts customer orders and forecasts into specific end-item production quantities?

Demand management process (Correct answer)
Available-to-promise (ATP) logic
Rough-cut capacity plan
Distribution requirements plan

Correct answer: Demand management process

Demand management consolidates forecasts and customer orders into the demand signal used to build the MPS.

Question 38: In lean manufacturing, 'single-minute exchange of die' (SMED) aims to:

Standardize die designs across product families
Outsource tooling changes to specialized contractors
Reduce equipment changeover time to less than ten minutes (Correct answer)
Eliminate all setup time permanently

Correct answer: Reduce equipment changeover time to less than ten minutes

SMED is a systematic approach to reducing setup and changeover time to single-digit minutes (under 10), enabling smaller batch sizes and greater flexibility.

Question 39: Third-party logistics (3PL) providers offer which primary value to companies?

Outsourced logistics services including transportation, warehousing, and distribution management (Correct answer)
Financial services such as supply chain financing and invoice factoring
Product design and engineering services
Ownership of the products they handle on behalf of clients

Correct answer: Outsourced logistics services including transportation, warehousing, and distribution management

3PLs provide outsourced logistics expertise, assets, and services that allow companies to focus on their core competencies while leveraging the 3PL's scale and specialization.

Question 40: In quality management, 'statistical process control' (SPC) uses control charts to:

Distinguish between common-cause and special-cause variation in a process (Correct answer)
Set customer specifications for finished products
Determine the inspection sample size
Calculate the defects per million opportunities (DPMO)

Correct answer: Distinguish between common-cause and special-cause variation in a process

SPC control charts plot process data over time with control limits to detect when a process shifts from normal (common-cause) variation to abnormal (special-cause) variation.

Question 41: In lean manufacturing, what does 'takt time' represent?

The rate at which products must be completed to match customer demand (Correct answer)
The time allowed for quality inspection
The time required to perform one complete setup
The average cycle time across all work centers

Correct answer: The rate at which products must be completed to match customer demand

Takt time is the available production time divided by customer demand rate, setting the pace at which each unit must be produced to satisfy demand.

Question 42: In demand management, 'available-to-promise' (ATP) is used to:

Determine the optimal production batch size
Measure forecast accuracy
Commit to customer delivery dates based on uncommitted inventory and production (Correct answer)
Calculate safety stock levels

Correct answer: Commit to customer delivery dates based on uncommitted inventory and production

ATP is the uncommitted portion of inventory and planned production that can be promised to new customer orders.

Question 43: An MRP 'action message' to 'reschedule in' means the planner should:

Increase the order quantity to cover additional demand
Release a new planned order
Move the due date of an existing order to an earlier date (Correct answer)
Cancel the order because demand has disappeared

Correct answer: Move the due date of an existing order to an earlier date

A 'reschedule in' message indicates that a scheduled receipt is due after the requirement date and should be expedited or moved earlier.

Question 44: What does 'net requirements' mean in MRP?

The reorder point for a purchased item
The total demand for a component before offsetting existing stock
Total gross requirements minus on-hand inventory and scheduled receipts (Correct answer)
The difference between planned and actual production

Correct answer: Total gross requirements minus on-hand inventory and scheduled receipts

Net requirements are calculated by subtracting on-hand inventory and scheduled receipts from gross requirements to determine what additional supply is needed.

Question 45: A 'hedge' in master planning refers to:

A technique for smoothing seasonal demand
A scheduling rule that prioritizes urgent orders
A financial instrument to offset commodity price risk
Inventory or capacity built in anticipation of uncertain future demand or supply events (Correct answer)

Correct answer: Inventory or capacity built in anticipation of uncertain future demand or supply events

In CPIM, a hedge is planned inventory or capacity created to protect against uncertainty such as a possible strike, supply disruption, or demand surge.

Question 46: What is a 'planning bill of materials' used for in master scheduling?

To document engineering changes to existing designs
To calculate the cost of a finished product
To represent a family of products for aggregate planning purposes (Correct answer)
To list all components needed for a single finished product

Correct answer: To represent a family of products for aggregate planning purposes

A planning BOM is an artificial grouping of items used to facilitate master scheduling for product families with common components.

Question 47: In ABC analysis, which category typically represents approximately 20% of SKUs but 80% of total inventory value?

B items
D items
C items
A items (Correct answer)

Correct answer: A items

A items follow the Pareto principle—roughly 20% of SKUs account for about 80% of total annual inventory value and receive the most management attention.

Question 48: In supplier management, a 'vendor-managed inventory' (VMI) arrangement means:

The vendor monitors the customer's inventory and independently triggers replenishments (Correct answer)
The vendor consigns inventory that remains on the vendor's books until consumed
The customer sets reorder points and the vendor executes the replenishment
The customer and vendor jointly set safety stock levels

Correct answer: The vendor monitors the customer's inventory and independently triggers replenishments

In VMI, the supplier takes responsibility for monitoring the customer's inventory levels and initiating replenishment orders, reducing the customer's ordering burden and improving supply responsiveness.

Question 49: What is the 'bullwhip effect' in supply chain demand management?

A method for accelerating supplier shipments
A type of demand forecasting error
A lean manufacturing technique for smoothing production
The amplification of demand variability as orders move upstream in the supply chain (Correct answer)

Correct answer: The amplification of demand variability as orders move upstream in the supply chain

The bullwhip effect describes how small demand variations at the retail level become increasingly amplified as they travel upstream to manufacturers and suppliers.

Question 50: What does 'cycle counting' accomplish in inventory management?

Counting the number of production cycles completed in a period
Verifying supplier shipments at receiving
Counting all inventory at year-end for financial reporting
Continuously counting small portions of inventory so all items are counted periodically without shutting down operations (Correct answer)

Correct answer: Continuously counting small portions of inventory so all items are counted periodically without shutting down operations

Cycle counting divides inventory into subsets counted on a rotating schedule, maintaining accuracy throughout the year without a disruptive annual physical count.

Question 51: What is 'queue time' in a manufacturing routing?

Time to set up equipment before running a job
Time to move a job between work centers
Time spent actually performing the operation
Time a job waits in front of a work center before processing begins (Correct answer)

Correct answer: Time a job waits in front of a work center before processing begins

Queue time is the waiting time a job experiences in front of a work center and is often the largest component of manufacturing lead time.

Question 52: What demand management activity involves handling a client request and preparing materials for manufacturing or shipping?

Communicating with the marketplace
Providing available-to-promise dates
Forecasting
Order processing (Correct answer)

Correct answer: Order processing

Order processing includes processing a customer request and making material available for production or shipping.

Question 53: Which demand pattern is characterized by a consistent upward or downward movement over time?

Cyclical
Trend (Correct answer)
Seasonal
Random

Correct answer: Trend

A trend pattern reflects a sustained long-term increase or decrease in demand, which must be incorporated into forecasting models.

Question 54: What is the primary goal of Material Requirements Planning (MRP)?

To manage customer relationships
To determine when and how much material to order or produce (Correct answer)
To schedule employee shifts
To forecast long-term sales

Correct answer: To determine when and how much material to order or produce

MRP calculates the quantity and timing of material orders and production orders needed to meet the MPS.

Question 55: Cross-docking in a distribution center primarily achieves:

Reduced inventory holding time by transferring goods directly from inbound to outbound (Correct answer)
Higher accuracy through multiple quality inspection points
Improved product traceability through RFID scanning
Lower product damage rates through better storage

Correct answer: Reduced inventory holding time by transferring goods directly from inbound to outbound

Cross-docking eliminates or minimizes storage time by moving product directly from receiving docks to shipping docks.

Question 56: Which type of waste in Lean manufacturing refers to producing more than customer demand requires?

Waiting
Defects
Motion
Overproduction (Correct answer)

Correct answer: Overproduction

Overproduction is considered the worst of the seven wastes because it masks other problems and consumes resources unnecessarily.

Question 57: Which global trade concept allows goods to be stored in a bonded facility without paying import duties until they are entered into commerce?

Foreign trade zone (FTZ) (Correct answer)
Letters of credit
Free trade agreement
Customs brokerage

Correct answer: Foreign trade zone (FTZ)

A Foreign Trade Zone (FTZ) is a designated area where goods can be stored, manipulated, or manufactured without formal customs entry, deferring or reducing duty payments.

Question 58: In supply chain management, the 'bullwhip effect' refers to:

Reduction in order quantities due to volume discounts
Decreasing lead times caused by better supplier coordination
The amplification of service levels from retailer to manufacturer
Increasing variability in demand signals as you move upstream in the supply chain (Correct answer)

Correct answer: Increasing variability in demand signals as you move upstream in the supply chain

The bullwhip effect describes how small fluctuations in retail demand can amplify into large swings in orders upstream, caused by factors like demand forecast updates and order batching.

Question 59: Mean Absolute Deviation (MAD) is used in forecasting to measure:

The average absolute difference between forecasted and actual demand (Correct answer)
The seasonal index for a product
The trend direction of demand
The correlation between two demand patterns

Correct answer: The average absolute difference between forecasted and actual demand

MAD measures forecast accuracy by averaging the absolute values of individual forecast errors, regardless of direction.

Question 60: What is 'intermodal transportation'?

Using a single mode of transport for an entire shipment from origin to destination
Shipping the same product by different modes to different customers
Combining two or more modes of transportation (such as rail and truck) to move freight in the same container (Correct answer)
Using air and ocean freight simultaneously for high-priority shipments

Correct answer: Combining two or more modes of transportation (such as rail and truck) to move freight in the same container

Intermodal transportation moves cargo in a standard container or unit across multiple modes (e.g., ocean then rail then truck) without handling the freight itself at each transfer point.

Question 61: The 'critical ratio' dispatching rule calculates priority as:

Setup time divided by run time
Order quantity divided by daily demand rate
Processing time divided by queue time
Time remaining until due date divided by work remaining (Correct answer)

Correct answer: Time remaining until due date divided by work remaining

Critical ratio = (Due Date − Today) / Remaining Lead Time; a ratio less than 1 means the job is behind schedule and should be expedited.

Question 62: A company has a finished goods inventory turns ratio of 12. What is the average number of days of inventory on hand?

30 days (Correct answer)
36 days
52 days
12 days

Correct answer: 30 days

Days of inventory = 365 / inventory turns = 365 / 12 ≈ 30.4 days, meaning the company holds approximately 30 days of inventory on average.

Question 63: What is 'input/output (I/O) control' used to manage in production?

Computer network traffic
The flow of work into and out of work centers to control queue lengths and lead times (Correct answer)
Electrical systems in the factory
Supplier invoice processing

Correct answer: The flow of work into and out of work centers to control queue lengths and lead times

I/O control monitors and adjusts the rate of work entering and leaving work centers to manage queues and actual lead times.

Question 64: In a Lean environment, what is the purpose of a Heijunka box?

To level production volume and mix over time (Correct answer)
To track supplier delivery performance
To visualize work-in-process limits
To store kanban cards for overflow inventory

Correct answer: To level production volume and mix over time

A Heijunka box is a visual scheduling tool that smooths production by sequencing work orders across time slots.

Question 65: Which supply chain model maps processes into Plan, Source, Make, Deliver, and Return categories?

Porter's Value Chain model
CPFR framework
SCOR (Supply Chain Operations Reference) model (Correct answer)
Balanced Scorecard framework

Correct answer: SCOR (Supply Chain Operations Reference) model

The SCOR model, developed by APICS/ASCM, provides a standardized framework with five process categories: Plan, Source, Make, Deliver, and Return.

Question 66: In Theory of Constraints (TOC), the 'constraint' or bottleneck is defined as:

Any work center with high setup times
A process step with high defect rates
A supplier with long lead times
The resource that limits the system's throughput (Correct answer)

Correct answer: The resource that limits the system's throughput

In TOC, the constraint is the weakest link — the resource whose capacity determines the maximum output of the entire system.

Question 67: In a capacity requirements planning (CRP) analysis, which factor converts planned order quantities into machine or labor hours?

Routing file (Correct answer)
Work order backlog
Inventory record file
Bill of materials (BOM)

Correct answer: Routing file

The routing file contains operation sequences, work centers, and standard hours per unit used to calculate load.

Question 68: Which forecasting technique relies on expert opinion and consensus rather than historical data?

Linear regression
Seasonal index
Simple moving average
Delphi method (Correct answer)

Correct answer: Delphi method

The Delphi method gathers and iteratively refines expert opinions until a consensus forecast is reached, useful when historical data is unavailable.

Question 69: Which technique disaggregates the production plan into a schedule for specific products?

Capacity requirements planning
Resource requirements planning
Master production scheduling (Correct answer)
Distribution requirements planning

Correct answer: Master production scheduling

Master production scheduling disaggregates the aggregate production plan into specific product schedules by time period.

Question 70: What is a 'firm planned order' (FPO) in MRP?

A completed production job
A planned order that has been frozen so MRP cannot automatically change its quantity or date (Correct answer)
A customer shipment confirmation
A purchase order sent to a supplier

Correct answer: A planned order that has been frozen so MRP cannot automatically change its quantity or date

An FPO is a planned order that a planner has manually frozen to prevent MRP from automatically rescheduling or changing it.

Question 71: Which forecasting method uses the average of a specific number of the most recent historical periods?

Simple moving average (Correct answer)
Delphi method
Regression analysis
Exponential smoothing

Correct answer: Simple moving average

A simple moving average calculates the mean of the most recent N data points, dropping the oldest period as a new one is added.

Question 72: ABC inventory classification is based on:

Product size and weight
Annual usage value, with A items being the highest-value items (Correct answer)
Product shelf life and perishability
Supplier reliability ratings

Correct answer: Annual usage value, with A items being the highest-value items

ABC analysis classifies inventory by annual usage value (unit cost × annual volume), with A items typically representing 20% of SKUs but 80% of value, requiring tighter control.

Question 73: Which scheduling method assigns jobs to work centers by starting from the due date and working backward?

Gantt chart scheduling
Backward scheduling (Correct answer)
Drum-buffer-rope scheduling
Forward scheduling

Correct answer: Backward scheduling

Backward scheduling starts from the required completion date and subtracts lead times to calculate the latest start dates for each operation.

Question 74: What does 'pegging' in MRP allow a planner to do?

Link invoices to purchase orders
Trace a material requirement back to the specific parent demand that caused it (Correct answer)
Fix the production schedule permanently
Attach bar codes to inventory

Correct answer: Trace a material requirement back to the specific parent demand that caused it

Pegging traces any MRP requirement up through the BOM levels to identify the specific end-item demand that generated it.

Question 75: Which inventory valuation method results in the HIGHEST reported profit during a period of rising prices?

LIFO (Last In, First Out)
Weighted average cost
FIFO (First In, First Out) (Correct answer)
Standard cost

Correct answer: FIFO (First In, First Out)

Under FIFO, the oldest (lowest-cost) inventory is sold first, leaving newer (higher-cost) inventory on the balance sheet, which results in lower COGS and higher reported profit during inflation.

Question 76: Which APICS CPIM module focuses specifically on execution and control of operations, including input/output control and scheduling?

Detailed Scheduling and Planning
Master Planning of Resources
Execution and Control of Operations (Correct answer)
Basics of Supply Chain Management

Correct answer: Execution and Control of Operations

The Execution and Control of Operations module covers shop floor control, input/output management, and performance measurement.

Question 77: What does 'demand time fence' mean in master scheduling?

The point beyond which no customer orders are accepted
The period within which changes to the MPS are restricted or require management approval (Correct answer)
The date when a product becomes obsolete
The lead time for raw material procurement

Correct answer: The period within which changes to the MPS are restricted or require management approval

The demand time fence is the boundary inside which the master scheduler should not change the MPS without senior approval to avoid disrupting firm plans.

Question 78: Which forecasting method calculates the average of the most recent 'n' periods?

Simple moving average (Correct answer)
Exponential smoothing
Regression analysis
Delphi method

Correct answer: Simple moving average

Simple moving average averages a set number of the most recent data periods, dropping the oldest as a new period is added.

Question 79: What is the purpose of 'action messages' generated by MRP?

To authorize financial payments
To send emails to customers
To alert planners to exceptions requiring attention, such as expediting or rescheduling orders (Correct answer)
To log quality defects

Correct answer: To alert planners to exceptions requiring attention, such as expediting or rescheduling orders

Action messages notify planners of conditions requiring intervention, such as past-due orders, overdue releases, or excess inventory.

Question 80: In distribution requirements planning (DRP), what triggers a replenishment order from the central warehouse to a field distribution center?

When the central warehouse builds excess inventory above target levels
When projected on-hand inventory falls below the reorder point or safety stock (Correct answer)
When actual sales exceed the annual forecast
When the field DC receives a customer order exceeding available stock

Correct answer: When projected on-hand inventory falls below the reorder point or safety stock

DRP generates planned replenishment orders at each level of the distribution network when projected on-hand inventory is expected to fall below the safety stock or order point.

Question 81: Which MRP input file contains the product structure showing components needed for each parent item?

Inventory status record
Item master file
Routing file
Bill of Materials (BOM) (Correct answer)

Correct answer: Bill of Materials (BOM)

The bill of materials lists all components, subassemblies, and raw materials required to produce each parent item.

Question 82: What does 'utilization' measure in capacity management?

The percentage of orders completed on time
The percentage of scheduled time that a work center is actually working (Correct answer)
The ratio of standard hours produced to actual hours worked
The number of units produced per shift

Correct answer: The percentage of scheduled time that a work center is actually working

Utilization is the ratio of actual hours worked to available hours, indicating how much of a resource's available time is being used productively.

Question 83: The 'cash-to-cash cycle time' metric measures:

The time between payroll cycles in the organization
The speed at which cash flows through the banking system
Days inventory outstanding + days sales outstanding - days payable outstanding (Correct answer)
The time to convert a customer order into a cash receipt

Correct answer: Days inventory outstanding + days sales outstanding - days payable outstanding

Cash-to-cash cycle time = DIO + DSO – DPO, measuring how long cash is tied up in the operating cycle before being recovered.

Question 84: Which concept allows MRP to plan components across multiple product levels simultaneously?

Implosion
Netting
Offsetting
Explosion (BOM explosion) (Correct answer)

Correct answer: Explosion (BOM explosion)

BOM explosion passes parent demand down through all BOM levels to generate component requirements at every level.

Question 85: In procurement, 'spend analysis' is used to:

Monitor employee expense reports for policy compliance
Analyze purchasing data to identify savings opportunities, consolidation potential, and supplier performance patterns (Correct answer)
Calculate the total cost of running the procurement department
Audit supplier invoices for billing errors

Correct answer: Analyze purchasing data to identify savings opportunities, consolidation potential, and supplier performance patterns

Spend analysis systematically examines what an organization buys, from whom, and at what price to uncover consolidation opportunities, maverick spend, and strategic sourcing priorities.

Question 86: A Bill of Materials (BOM) that shows all components at the same level regardless of where they appear in the product structure is called a:

Modular BOM
Single-level BOM
Indented BOM
Summarized parts list (Correct answer)

Correct answer: Summarized parts list

A summarized parts list (or summarized BOM) consolidates all components to a single level, showing total quantities needed regardless of their position in the product hierarchy.

Question 87: Which cost trade-off does the total cost curve in EOQ analysis balance?

Transportation costs vs. holding costs
Carrying costs vs. stockout costs
Ordering costs vs. carrying costs (Correct answer)
Setup costs vs. labor costs

Correct answer: Ordering costs vs. carrying costs

EOQ minimizes total annual inventory cost by finding the order quantity where ordering cost equals carrying cost.

Question 88: Which planning horizon does the Sales and Operations Planning (S&OP) process typically cover?

Two to eighteen months (Correct answer)
Two to four weeks
Three to ten years
Days to two weeks

Correct answer: Two to eighteen months

S&OP typically covers a rolling horizon of 2–18 months, balancing supply capacity with aggregate demand.

Question 89: A company uses a periodic review inventory system. Which parameter defines how often the inventory level is checked?

Safety stock level
Review interval (Correct answer)
Economic order quantity
Reorder point

Correct answer: Review interval

In a periodic review system, the review interval (also called cycle time) determines how frequently inventory is checked and replenishment orders are placed.

Question 90: Total Cost of Ownership (TCO) when evaluating suppliers includes:

Invoice price plus freight charges
Purchase price only
Purchase price, transportation, quality costs, inventory costs, and supplier development costs (Correct answer)
Material cost plus direct labor cost

Correct answer: Purchase price, transportation, quality costs, inventory costs, and supplier development costs

TCO captures all costs associated with a supplier relationship beyond the purchase price, including logistics, quality failures, inventory holding, and the cost of managing the supplier.

Question 91: What is the primary output of the Material Requirements Planning (MRP) process?

Sales forecasts by product family
Planned order releases and action messages (Correct answer)
Customer order acknowledgments
Capacity utilization reports

Correct answer: Planned order releases and action messages

MRP produces planned order releases and exception action messages to direct purchasing and production.

Question 92: When evaluating total cost of ownership (TCO) for a sourcing decision, which factor is often OVERLOOKED when only considering purchase price?

Unit price per item
The supplier's quoted lead time
Hidden costs such as quality failures, transportation, and supplier management (Correct answer)
Volume discounts from the supplier

Correct answer: Hidden costs such as quality failures, transportation, and supplier management

TCO analysis reveals costs beyond purchase price, including quality, logistics, ordering, holding, and risk costs that impact true sourcing cost.

Question 93: Safety stock is primarily calculated to protect against which two sources of variability?

Yield loss and scrap rates
Price fluctuation and lead time changes
Forecast bias and order quantities
Demand variability and lead time variability (Correct answer)

Correct answer: Demand variability and lead time variability

Safety stock buffers against uncertainty in both customer demand and supplier/production lead times.

Question 94: A 'make-to-order' (MTO) production strategy differs from 'make-to-stock' (MTS) primarily in that MTO:

Relies exclusively on automated production equipment
Maintains large finished goods inventories to meet immediate demand
Begins production only after a confirmed customer order is received (Correct answer)
Uses longer lead times because of complex manufacturing processes

Correct answer: Begins production only after a confirmed customer order is received

MTO production is triggered by actual customer orders, eliminating finished goods inventory risk but resulting in longer customer lead times.

Question 95: In MRP terminology, what is a 'scheduled receipt'?

A forecast entry
An open order (purchase or production) already placed and expected to arrive (Correct answer)
A customer payment
A safety stock quantity

Correct answer: An open order (purchase or production) already placed and expected to arrive

Scheduled receipts are open orders already released that are expected to be received within the planning horizon.

Question 96: What is 'total cost of quality' composed of?

Customer warranty claims and returns only
Prevention costs, appraisal costs, and internal and external failure costs (Correct answer)
Inspection costs only
Rework and scrap costs only

Correct answer: Prevention costs, appraisal costs, and internal and external failure costs

Total cost of quality (COQ) includes prevention costs (avoiding defects), appraisal costs (detecting defects), internal failure costs (defects caught inside), and external failure costs (defects reaching customers).

Question 97: In MRP, 'explosion' refers to:

A sudden increase in customer demand
Calculating component requirements by multiplying parent requirements through all BOM levels (Correct answer)
The regeneration of MRP during a full system restart
Expanding supplier base to reduce risk

Correct answer: Calculating component requirements by multiplying parent requirements through all BOM levels

BOM explosion is the process of multiplying the parent item's gross requirement by component usage quantities at each BOM level to determine lower-level material needs.

Question 98: Which supply chain risk is BEST mitigated by maintaining dual or multiple sourcing strategies?

Transportation cost increases
Currency exchange rate volatility
Single-source supplier disruption (Correct answer)
Demand forecast inaccuracy

Correct answer: Single-source supplier disruption

Multiple sourcing spreads supply risk so that if one supplier fails, others can continue to provide the needed materials.

Question 99: In a kanban system, what determines the number of kanban cards in circulation?

The supplier's minimum order quantity
Average demand, lead time, safety stock, and container size (Correct answer)
The master production schedule quantity
The warehouse capacity

Correct answer: Average demand, lead time, safety stock, and container size

The number of kanbans is calculated from demand rate, replenishment lead time, safety buffer, and container quantity.

Question 100: What is 'postponement' as a supply chain strategy?

Deferring maintenance to reduce short-term costs
Delaying payment to suppliers to improve cash flow
Delaying product differentiation as late as possible in the supply chain to maintain flexibility (Correct answer)
Postponing capital investment until demand is proven

Correct answer: Delaying product differentiation as late as possible in the supply chain to maintain flexibility

Postponement (delayed differentiation) keeps products in a generic state as long as possible, adding customization features only when specific customer demand is known.

Question 101: Which of the following is an example of a 'level production strategy' in aggregate planning?

Outsourcing production during peak demand periods
Hiring and laying off workers to match demand fluctuations each month
Adjusting prices to shift demand away from peak periods
Maintaining a constant workforce and production rate while using inventory to absorb demand variation (Correct answer)

Correct answer: Maintaining a constant workforce and production rate while using inventory to absorb demand variation

A level strategy maintains a stable workforce and production rate, using inventory buildup during slow periods and depletion during peak periods to absorb demand variability.

Question 102: In transportation management, 'less-than-truckload' (LTL) shipping is used when:

A shipper needs to move a full trailer exclusively
A dedicated fleet is required for sensitive materials
Goods must be shipped by air due to time sensitivity
A shipper's cargo does not fill an entire truck and shares space with other shippers' freight (Correct answer)

Correct answer: A shipper's cargo does not fill an entire truck and shares space with other shippers' freight

LTL shipping consolidates smaller shipments from multiple shippers into one truck, offering lower cost than full truckload (FTL) but typically with longer transit times and more handling.

Question 103: What is the primary purpose of a 'distribution center' (DC) in a supply chain?

To perform final assembly and customization of products
To receive, sort, store, and ship products efficiently to serve retail or end customers in a region (Correct answer)
To serve as a quality inspection facility for incoming goods
To manufacture finished goods close to customers

Correct answer: To receive, sort, store, and ship products efficiently to serve retail or end customers in a region

A distribution center consolidates inbound shipments from suppliers and redistributes products to downstream customers or retail locations, improving delivery speed and reducing transportation costs.

Question 104: Which supply chain phenomenon describes how small fluctuations in end-consumer demand become amplified as orders move upstream toward suppliers?

The oscillation effect
Demand smoothing
The ripple effect
The bullwhip effect (Correct answer)

Correct answer: The bullwhip effect

The bullwhip effect occurs when each tier of the supply chain overreacts to demand signals, causing order variability to amplify upstream—much like the tip of a whip swings farther than the handle.

Question 105: What is the basic formula for the reorder point (ROP) when demand and lead time are known?

ROP = Safety stock × Lead time
ROP = Average daily demand × Lead time + Safety stock (Correct answer)
ROP = EOQ ÷ Lead time
ROP = Annual demand ÷ Order frequency

Correct answer: ROP = Average daily demand × Lead time + Safety stock

The reorder point equals average daily demand multiplied by lead time in days, plus safety stock to protect against variability during the replenishment period.

Question 106: What is the primary goal of 'reverse logistics'?

Managing the flow of returned, recalled, or end-of-life products back through the supply chain for recovery, recycling, or disposal (Correct answer)
Shipping products from the distribution center back to the factory
Shipping goods from the US market to international markets
Returning empty pallets and containers to suppliers

Correct answer: Managing the flow of returned, recalled, or end-of-life products back through the supply chain for recovery, recycling, or disposal

Reverse logistics encompasses the processes for collecting, sorting, refurbishing, recycling, or disposing of products moving backward through the supply chain, recovering value where possible.

Question 107: The 'planning fence' in master scheduling separates:

Domestic and international orders
Short-term and long-term financial plans
Make-to-stock and make-to-order products
Fixed and flexible portions of the schedule (Correct answer)

Correct answer: Fixed and flexible portions of the schedule

The planning fence divides the schedule into a frozen zone where changes are restricted and a flexible zone where planners can make adjustments.

Question 108: What is the primary purpose of Sales and Operations Planning (S&OP)?

To align supply plans with demand plans across the organization (Correct answer)
To calculate economic order quantities
To schedule individual work centers on the shop floor
To determine the reorder point for each SKU

Correct answer: To align supply plans with demand plans across the organization

S&OP integrates sales forecasts with production, inventory, and financial plans to create one unified operating plan.

Question 109: Anticipation inventory is primarily built up to handle which situation?

Unplanned production line downtime
Emergency customer orders
Unexpected supplier delivery delays
Predictable seasonal or promotional demand surges (Correct answer)

Correct answer: Predictable seasonal or promotional demand surges

Anticipation inventory is accumulated ahead of a known demand increase—such as a holiday season or a major promotion—so production can run at a stable rate beforehand.

Question 110: In a fixed-order-quantity (Q) system, what triggers a replenishment order?

Available production capacity
Inventory falling to a predetermined reorder point (Correct answer)
A fixed time period elapsing
A change in the sales forecast

Correct answer: Inventory falling to a predetermined reorder point

In a fixed-order-quantity system, a standard order for the same quantity is placed whenever the inventory level drops to the reorder point (ROP).

Question 111: Which component of demand is caused by regular, repeating patterns tied to a calendar cycle?

Randomness
Seasonality (Correct answer)
Cyclical variation
Trend

Correct answer: Seasonality

Seasonality describes demand patterns that repeat predictably within a year, such as holiday spikes or summer peaks.

Question 112: In an 'assemble-to-order' (ATO) environment, the decoupling point is at:

Finished goods warehouse
Raw material storage
Subassembly or component level (Correct answer)
Customer delivery location

Correct answer: Subassembly or component level

ATO holds inventory at the semi-finished subassembly level and assembles to specific customer configurations only when an order is received.

Question 113: The EOQ formula minimizes the total of which two types of costs?

Purchase costs and ordering costs
Stockout costs and carrying costs
Setup costs and stockout costs
Ordering costs and carrying costs (Correct answer)

Correct answer: Ordering costs and carrying costs

EOQ balances ordering costs (which decrease per unit as order size grows) against carrying costs (which increase as more inventory is held), finding the quantity where their total is minimized.

Question 114: The primary purpose of a Distribution Requirements Planning (DRP) system is to:

Manage carrier contract negotiations
Project inventory replenishment needs across a distribution network (Correct answer)
Optimize warehouse picking routes
Track customer returns and reverse logistics

Correct answer: Project inventory replenishment needs across a distribution network

DRP extends MRP logic to distribution networks, projecting future inventory needs at multiple locations to plan timely replenishment.

Question 115: Which demand management technique smooths out demand peaks by influencing customer timing?

Safety stock building
Demand shaping (e.g., promotions, pricing incentives) (Correct answer)
Subcontracting
Expediting

Correct answer: Demand shaping (e.g., promotions, pricing incentives)

Demand shaping uses pricing, promotions, or incentives to shift customer demand from peak periods to slower periods, leveling the overall demand curve.

Question 116: A company applies ABC analysis to its inventory. Class A items typically represent:

Items with the highest demand variability
A small percentage of items accounting for the majority of annual dollar usage (Correct answer)
Items that are most difficult to procure
The largest number of SKUs with low dollar value

Correct answer: A small percentage of items accounting for the majority of annual dollar usage

ABC analysis classifies inventory by annual dollar usage; Class A items are roughly 10-20% of SKUs but represent approximately 70-80% of total annual dollar usage.

Question 117: In supply chain management, 'postponement' refers to:

Holding safety stock until needed by the customer
Deferring product differentiation to as late as possible in the process (Correct answer)
Postponing new product launches during economic downturns
Delaying supplier payments to improve cash flow

Correct answer: Deferring product differentiation to as late as possible in the process

Postponement delays final product customization until closer to the point of delivery to reduce inventory risk and improve flexibility.

Question 118: What is 'causal forecasting' based on?

Using only past demand history
Polling customers directly
Averaging competitor sales data
Using a leading indicator or external variable that correlates with and predicts demand (Correct answer)

Correct answer: Using a leading indicator or external variable that correlates with and predicts demand

Causal forecasting builds a statistical model relating demand to one or more external variables (e.g., economic indicators, advertising spend) that predict demand.

Question 119: Which of the following is a primary input to the master production schedule?

Employee training records
The aggregate production plan (Correct answer)
Supplier quality ratings
Shop floor work orders

Correct answer: The aggregate production plan

The aggregate production plan provides overall production targets by family that are disaggregated into the MPS for specific products.

Question 120: What is the primary goal of Total Productive Maintenance (TPM)?

Outsourcing maintenance to reduce fixed costs
Maximizing equipment effectiveness through proactive, operator-led maintenance (Correct answer)
Scheduling all maintenance during planned shutdowns
Reducing the cost of spare parts inventory

Correct answer: Maximizing equipment effectiveness through proactive, operator-led maintenance

TPM aims to eliminate equipment losses by involving operators in maintenance, preventing breakdowns, and continuously improving Overall Equipment Effectiveness (OEE).

Question 121: In a pull production system, what triggers the release of a work order to a upstream workstation?

A purchase order from a supplier
A downstream signal indicating consumption (Correct answer)
A master production schedule release
A forecasted demand spike

Correct answer: A downstream signal indicating consumption

Pull systems use downstream consumption signals (e.g., kanban cards) to authorize upstream production.

Question 122: Which inventory policy triggers a replenishment order when on-hand inventory falls to a predetermined level, regardless of the time period?

MRP lot-for-lot policy
Periodic review (P) system
Continuous review (Q) system (Correct answer)
Min-max system

Correct answer: Continuous review (Q) system

A continuous review (Q) system monitors inventory constantly and places a fixed order quantity whenever the reorder point is reached.

Question 123: What is pipeline inventory?

Inventory that is currently in transit between supply chain locations (Correct answer)
Inventory reserved for specific customers under long-term contracts
Inventory stored in underground facilities
Inventory at the very beginning of a production process

Correct answer: Inventory that is currently in transit between supply chain locations

Pipeline inventory consists of items that are actively moving through the supply chain—in transit between a supplier, plant, warehouse, or customer—and thus tied up and not yet available.

Question 124: What is 'priority planning' in detailed scheduling?

Allocating budget to production departments
Determining the sequence in which jobs should be processed at a work center (Correct answer)
Ranking suppliers by quality score
Setting strategic goals for the year

Correct answer: Determining the sequence in which jobs should be processed at a work center

Priority planning determines job sequencing at work centers to meet due dates and optimize flow.

Question 125: Rough-cut capacity planning (RCCP) is performed to verify which plan?

Shop floor schedule
Material requirements plan
Master production schedule (Correct answer)
Supplier delivery schedule

Correct answer: Master production schedule

RCCP checks the feasibility of the MPS against key resources without the detail of full capacity requirements planning.

Question 126: What is 'efficiency' in the context of work center capacity?

On-time delivery rate of work center output
Actual hours worked divided by available hours
Standard hours produced divided by actual hours worked (Correct answer)
Number of units produced divided by planned units

Correct answer: Standard hours produced divided by actual hours worked

Efficiency compares actual output (in standard hours) to the hours actually consumed, measuring how well a work center performs against established time standards.

Question 127: What is the purpose of 'safety stock' in a distribution system?

To pre-position inventory for anticipated price increases
To hold inventory for promotional campaigns and seasonal sales events
To buffer against demand variability and supply uncertainty to prevent stockouts (Correct answer)
To maintain a reserve for damaged or expired goods

Correct answer: To buffer against demand variability and supply uncertainty to prevent stockouts

Safety stock is extra inventory held beyond average expected demand to protect service levels against variability in demand and supply lead times.

Question 128: Which of the following best describes 'collaborative planning, forecasting, and replenishment' (CPFR)?

A technique for reducing manufacturing cycle times
A process where trading partners jointly develop demand forecasts and replenishment plans (Correct answer)
An internal S&OP process between sales and manufacturing
A method for optimizing warehouse storage locations

Correct answer: A process where trading partners jointly develop demand forecasts and replenishment plans

CPFR is a supply chain collaboration process in which retailers and suppliers share data to jointly develop forecasts and replenishment orders.

Question 129: A company that owns and operates its own distribution network rather than outsourcing is using:

Third-party logistics (3PL)
Drop shipping
Insourcing/vertical integration (Correct answer)
Fourth-party logistics (4PL)

Correct answer: Insourcing/vertical integration

Insourcing or vertical integration means the company retains internal control over logistics functions instead of contracting them out.

Question 130: What is 'safety time' in MRP, and how does it differ from safety stock?

Safety time is used for purchased items; safety stock for manufactured items
Safety time adds extra quantity; safety stock adds extra lead time
They are identical concepts with different names
Safety time adds extra lead time offset; safety stock adds extra inventory quantity (Correct answer)

Correct answer: Safety time adds extra lead time offset; safety stock adds extra inventory quantity

Safety time offsets the planned receipt date earlier than needed (adding lead time buffer), while safety stock adds a quantity buffer to protect against demand variability.

Question 131: Which type of production environment is best suited for a repetitive manufacturing process with a continuous flow?

Flow shop (line) (Correct answer)
Job shop
Project
Batch process

Correct answer: Flow shop (line)

Flow shops arrange resources in a fixed sequence matching the product's routing, ideal for repetitive high-volume production.

Question 132: The Sales and Operations Planning (S&OP) process is PRIMARILY designed to:

Develop item-level replenishment plans for distribution centers
Balance supply and demand at an aggregate level across the business (Correct answer)
Manage customer orders and available-to-promise quantities
Create detailed production schedules at the shop floor level

Correct answer: Balance supply and demand at an aggregate level across the business

S&OP aligns demand plans with supply capabilities at an aggregate (family/group) level, coordinating across sales, operations, finance, and executive leadership.

Question 133: In master planning, 'time phasing' means:

Reducing lead times through process improvement
Scheduling supply and demand across specific future time periods (Correct answer)
Calculating cumulative lead times
Grouping all demand into a single bucket

Correct answer: Scheduling supply and demand across specific future time periods

Time phasing assigns quantities of supply and demand to specific future time periods, enabling planners to see imbalances over time.

Question 134: Which file includes a list of the single-level parts and quantities required to put a parent together?

Master file
Work center master file
Routing file
Product structure file (Correct answer)

Correct answer: Product structure file

The product structure file contains a list of the single-level components and quantities needed to assemble a parent.

Question 135: What is 'demand sensing' in modern supply chain management?

Measuring warehouse temperature and humidity
Tracking customer satisfaction in real time
Monitoring social media for brand mentions
Using short-term, high-frequency data (POS, shipments) to detect real-time demand signals (Correct answer)

Correct answer: Using short-term, high-frequency data (POS, shipments) to detect real-time demand signals

Demand sensing uses near-real-time data such as point-of-sale information to detect and respond to actual demand faster than traditional forecasting.

Question 136: Which shop floor scheduling priority rule selects the job with the earliest due date first?

Shortest processing time (SPT)
Earliest due date (EDD) (Correct answer)
Critical ratio (CR)
First come, first served (FCFS)

Correct answer: Earliest due date (EDD)

The Earliest Due Date rule prioritizes jobs whose promised completion dates are soonest, helping minimize the number of late jobs.

Question 137: A product has a raw material cost of $50, direct labor of $20, and overhead of $30. What is its total standard cost?

$150
$100 (Correct answer)
$70
$80

Correct answer: $100

Total standard cost = raw material ($50) + direct labor ($20) + overhead ($30) = $100.

Question 138: Distribution Requirements Planning (DRP) is best described as:

Time-phased planning of inventory replenishment across a distribution network (Correct answer)
A technique for scheduling inbound supplier shipments
A method for calculating safety stock at the plant level
A system for tracking customer returns

Correct answer: Time-phased planning of inventory replenishment across a distribution network

DRP applies MRP logic to distribution networks, planning inventory replenishment from central warehouses to field locations over time.

Question 139: What does the inventory turnover ratio measure?

The ratio of finished goods to raw materials
How quickly a company pays its suppliers
How often physical cycle counts are performed
How many times inventory is sold and replaced over a period (Correct answer)

Correct answer: How many times inventory is sold and replaced over a period

Inventory turnover ratio measures how many times a company sells and replenishes its inventory over a given period, indicating how efficiently inventory is being managed.

Question 140: What is the 'product-process matrix' concept used for in manufacturing strategy?

Aligning the appropriate production process structure with the product's volume and variety characteristics (Correct answer)
Mapping products to supplier capabilities
Calculating the total cost of ownership for capital equipment
Designing quality inspection plans for each product

Correct answer: Aligning the appropriate production process structure with the product's volume and variety characteristics

The product-process matrix maps product volume and variety combinations to appropriate process types (job shop, batch, line, continuous), guiding strategic manufacturing decisions.

Question 141: Which supply chain strategy is BEST suited for a product with highly unpredictable demand and short life cycles?

Efficient supply chain
Agile supply chain (Correct answer)
Lean supply chain
Continuous replenishment

Correct answer: Agile supply chain

Agile supply chains are designed to respond quickly to unpredictable demand and market volatility.

Question 142: Which document provides a complete list of all components, subassemblies, and raw materials required to build one unit of a finished product?

Bill of materials (BOM) (Correct answer)
Master production schedule
Work order traveler
Routing file

Correct answer: Bill of materials (BOM)

The bill of materials (BOM) defines the parent-component relationships and quantities needed to produce the finished item.

Question 143: A company is evaluating two suppliers. Supplier A has lower unit cost but higher demand variability impact; Supplier B has higher cost but superior delivery reliability. In a lean environment, which factor should receive GREATEST weight?

Unit purchase price, as it directly impacts product cost
Annual sales volume potential offered by each supplier
Delivery reliability, as lean systems have minimal buffer to absorb supply disruptions (Correct answer)
Proximity to the manufacturing facility to reduce freight cost

Correct answer: Delivery reliability, as lean systems have minimal buffer to absorb supply disruptions

Lean environments operate with minimal safety stock, making delivery reliability paramount — an unreliable low-cost supplier can cause line stoppages that far outweigh any unit cost savings.

Question 144: What does EOQ stand for in inventory management?

Economic Order Quantity (Correct answer)
Estimated Output Quality
External Order Quantity
Efficient Order Queue

Correct answer: Economic Order Quantity

EOQ (Economic Order Quantity) is the order quantity that minimizes the combined total of ordering and carrying costs.

Question 145: What is the primary benefit of 'concurrent engineering' (simultaneous engineering)?

Reducing the number of engineers needed on a project
Shortening product development cycle time by overlapping design and manufacturing process development activities (Correct answer)
Eliminating prototype builds during product development
Standardizing engineering drawings across product lines

Correct answer: Shortening product development cycle time by overlapping design and manufacturing process development activities

Concurrent engineering involves cross-functional teams working on product design and process design simultaneously rather than sequentially, significantly reducing time to market.

Question 146: An integrated supply chain's primary objective is best summed up by the following phrases:

An efficient flow of production
Decreased lead time
Increased supplier partnerships
An efficient flow of materials and information (Correct answer)

Correct answer: An efficient flow of materials and information

An integrated supply chain aims to achieve an efficient flow of materials and information throughout the entire supply chain network, from the suppliers of raw materials to the end-users of the finished products. By integrating all aspects of the supply chain, including procurement, production, transportation, warehousing, and distribution, companies can improve their responsiveness to customer demands, reduce lead times, lower costs, and increase profitability. The ultimate goal is to create a seamless and agile supply chain that can quickly adapt to changes in demand, supply, and market conditions, and deliver high-quality products and services to customers in a timely and cost-effective manner.

Question 147: What does a 'demand plan' integrate that a simple statistical forecast does not?

Only historical sales data
Only supplier lead times
Business intelligence such as promotions, new product launches, and market events (Correct answer)
Only safety stock parameters

Correct answer: Business intelligence such as promotions, new product launches, and market events

A demand plan incorporates marketing events, promotions, product launches, and market intelligence in addition to statistical baseline forecasts.

Question 148: In forecasting, what does 'disaggregation' refer to?

Removing seasonal patterns from data
Splitting a production order into smaller lots
Breaking a high-level aggregate forecast down into individual SKU or location-level forecasts (Correct answer)
Combining multiple forecasts into one aggregate number

Correct answer: Breaking a high-level aggregate forecast down into individual SKU or location-level forecasts

Disaggregation splits an aggregate (family-level or regional) forecast into detailed forecasts by SKU, location, or customer segment.

Question 149: Which capacity planning technique uses historical ratios of labor or machine hours per unit of output to estimate future capacity needs?

Rough-cut capacity planning (Correct answer)
Bill of resources
Resource requirements planning
Capacity requirements planning (CRP)

Correct answer: Rough-cut capacity planning

Rough-cut capacity planning uses overall factors or bills of resources to quickly validate whether the master production schedule is feasible before detailed CRP.

Question 150: Capacity Requirements Planning (CRP) operates on which planning inputs?

Planned and released work orders from MRP and routing data (Correct answer)
The aggregate production plan and bills of resources
The master schedule and rough-cut bill of resources
Supplier lead times and purchasing contracts

Correct answer: Planned and released work orders from MRP and routing data

CRP uses MRP-generated planned and released orders along with routing data (operations, run times, setup times) to calculate detailed load on work centers.

Question 151: Which inventory valuation method assumes the most recently purchased items are consumed first?

FIFO (First In, First Out)
Weighted average cost
Standard cost
LIFO (Last In, First Out) (Correct answer)

Correct answer: LIFO (Last In, First Out)

LIFO (Last In, First Out) assumes the newest inventory items are used or sold first, which can affect reported cost of goods sold and inventory valuation.

Question 152: Which planning horizon is most commonly associated with the Master Production Schedule (MPS)?

Months to years
Days to weeks
Weeks to months (Correct answer)
Years to decades

Correct answer: Weeks to months

The MPS typically spans weeks to months, covering the planning fence within which firm orders are scheduled.

CPIM – Certified in Planning and Inventory Management

The CPIM certification, offered by ASCM (formerly APICS), validates expertise across the full supply chain cycle including strategy, S&OP, demand and supply planning, inventory management, detailed scheduling, distribution, and continuous improvement. As of June 1, 2026, the exam follows the CPIM 9.0 single-exam format.

Questions

40 min

Time Limit

70%

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