CDPP Collaborative Planning & Customer Engagement 2 — Questions and Answers
Question 1: What is the 'bullwhip effect' in supply chain management?
- Demand volatility that increases as it moves upstream in the supply chain (Correct answer)
- A technique for smoothing seasonal demand
- An inventory replenishment algorithm
- A forecasting error caused by data lag
Correct answer: Demand volatility that increases as it moves upstream in the supply chain
The bullwhip effect describes how small demand fluctuations at the retail level get amplified into larger swings in orders as they move upstream to distributors, manufacturers, and suppliers.
Question 2: Which practice most directly reduces the bullwhip effect?
- Increasing safety stock at every tier
- Sharing downstream POS or sell-out data with upstream partners (Correct answer)
- Using longer order cycles
- Applying exponential smoothing to all forecasts
Correct answer: Sharing downstream POS or sell-out data with upstream partners
Sharing actual consumer demand data upstream eliminates information distortion, which is the root cause of the bullwhip effect.
Question 3: What is vendor-managed inventory (VMI)?
- The retailer manages supplier warehouses
- The supplier takes responsibility for managing and replenishing the buyer's inventory levels (Correct answer)
- A government program for managing strategic reserves
- An ERP tool for tracking vendor invoices
Correct answer: The supplier takes responsibility for managing and replenishing the buyer's inventory levels
In VMI, the supplier monitors the buyer's inventory and autonomously triggers replenishment, using shared stock and sales data.
Question 4: Which data element is most important to share with a supplier under a VMI arrangement?
- Customer credit scores
- On-hand inventory levels and current sales velocity (Correct answer)
- Internal cost accounting data
- Employee headcount at distribution centers
Correct answer: On-hand inventory levels and current sales velocity
Current stock levels and sales velocity allow the supplier to calculate replenishment needs accurately and maintain agreed service levels.
Question 5: What is a 'demand collaboration portal' used for in modern supply chains?
- Processing customer invoices electronically
- Providing trading partners a shared platform to input forecasts, view deviations, and resolve exceptions (Correct answer)
- Managing reverse logistics for product returns
- Automating customs documentation
Correct answer: Providing trading partners a shared platform to input forecasts, view deviations, and resolve exceptions
A demand collaboration portal enables retailers, distributors, and suppliers to share forecast data, flag variances, and align on a consensus number in near real time.
Question 6: How does customer segmentation improve demand planning collaboration?
- It eliminates the need for statistical forecasting models
- It allows planners to prioritize collaboration resources toward high-volume or high-variability accounts (Correct answer)
- It automatically generates purchase orders
- It replaces the S&OP cycle for top customers
Correct answer: It allows planners to prioritize collaboration resources toward high-volume or high-variability accounts
Segmenting customers by revenue, volatility, or strategic importance helps demand planners invest collaborative effort where it has the greatest forecast accuracy impact.
CDPP Collaborative Planning & Customer Engagement 2
What is the 'bullwhip effect' in supply chain management?