CWLP Supply Chain Operations & Optimization 3 — Questions and Answers
Question 1: Which concept describes the amplification of demand variability as orders move upstream in the supply chain?
- Demand sensing
- Bullwhip effect (Correct answer)
- Supply volatility
- Lead time variability
Correct answer: Bullwhip effect
The bullwhip effect occurs when small fluctuations in end-customer demand cause increasingly large swings in upstream orders.
Question 2: Collaborative Planning, Forecasting, and Replenishment (CPFR) is best described as:
- A unilateral forecast issued by the retailer to the supplier
- A joint process where trading partners share data to create aligned forecasts and replenishment plans (Correct answer)
- An automated system that replaces human planners
- A government standard for food supply chains
Correct answer: A joint process where trading partners share data to create aligned forecasts and replenishment plans
CPFR links retailers and suppliers through shared forecasts and replenishment plans to reduce inventory and improve service.
Question 3: Economic Order Quantity (EOQ) minimizes the sum of which two costs?
- Transportation cost and labor cost
- Ordering cost and carrying (holding) cost (Correct answer)
- Purchase price and quality cost
- Setup cost and scrap cost
Correct answer: Ordering cost and carrying (holding) cost
EOQ balances the cost of placing orders (ordering cost) against the cost of holding inventory (carrying cost).
Question 4: A '3PL' provider differs from a '4PL' provider primarily in that the 4PL:
- Only handles domestic shipments
- Manages multiple 3PLs and provides overall supply chain orchestration (Correct answer)
- Owns its own fleet of trucks
- Specializes in cold-chain logistics
Correct answer: Manages multiple 3PLs and provides overall supply chain orchestration
A 4PL acts as a lead logistics provider, coordinating multiple 3PLs and other service providers on behalf of the client.
Question 5: Which KPI directly measures how efficiently a supply chain converts inventory investment into sales revenue?
- Inventory days of supply
- Gross margin return on investment (GMROI) (Correct answer)
- Order fill rate
- Cash-to-cash cycle time
Correct answer: Gross margin return on investment (GMROI)
GMROI measures gross profit generated per dollar of average inventory, reflecting inventory productivity.
Question 6: In supply chain network design, a 'hub-and-spoke' model centralizes flows through:
- Multiple regional distribution centers that ship directly to stores
- A central hub that consolidates and sorts shipments before forwarding to destinations (Correct answer)
- Suppliers who ship directly to end customers
- Cross-dock facilities at each retail location
Correct answer: A central hub that consolidates and sorts shipments before forwarding to destinations
Hub-and-spoke consolidates shipments at a central point, enabling economies of scale on high-volume lanes.
Question 7: Which approach to supplier performance management involves sharing scorecards and jointly developing improvement plans?
- Transactional sourcing
- Supplier development (Correct answer)
- Spot buying
- Reverse auctioning
Correct answer: Supplier development
Supplier development is a proactive, collaborative approach to improving supplier capabilities through shared goals and joint action plans.
CWLP Supply Chain Operations & Optimization 3
Which concept describes the amplification of demand variability as orders move upstream in the supply chain?