Question 1

You are tasked with implementing a new WMS (Warehouse Management System) for a 20,000 sqm live warehouse with zero downtime permitted. How would you plan the rollout to minimize disruption and ensure inventory data accuracy at go-live?

Accepted Answer

Plan across 5 phases: (1) Full stock count and master data cleanse (SKU, location), (2) Pilot zone (10-15% of warehouse footprint), (3) Parallel data migration run, (4) Zone-by-zone cutover scheduled during low-traffic periods, (5) 30-day hypercare post go-live. Strong answers should cover: role of slotting optimization in location design; barcode/RFID strategy; training plan for warehouse associates; ongoing cycle counting vs. one-time full stock count; integration with ERP and TMS; rollback plan if go-live fails; KPIs to measure success (picking error rate, order processing time, inventory accuracy).

Question 2

Your company is launching same-day delivery in Ho Chi Minh City and Hanoi. What Vietnam-specific urban infrastructure challenges must you address, and how would you design the last-mile model to achieve over 95% first-attempt delivery success?

Accepted Answer

Analyze across 4 layers: (1) Infrastructure - traffic, alleyways (hẻm), non-standardized addresses; (2) Operating model - micro-fulfillment centers, hub-and-spoke; (3) Technology - dynamic routing, OTP confirmation, VNPT Address API; (4) Delivery workforce - captive shippers vs. gig economy. Key Vietnam-specific factors: complex alleyway address system, especially in HCMC; severe peak congestion 7-9am and 5-7pm; city-center truck bans during peak hours; COD (cash on delivery) rate ~60-70% creating return risk; frequent recipient absences; automated parcel locker networks still nascent. Candidates should mention analyzing attempt failure root causes for continuous improvement.

Question 3

Management asks you to analyze whether to run logistics in-house or outsource to a 3PL for distribution operations in Vietnam. How would you build the decision-making framework and criteria?

Accepted Answer

Use a 5-dimension framework: (1) Cost - TCO vs. 3PL rate card; (2) Core competency - is logistics a competitive differentiator?; (3) Control and flexibility; (4) Seasonal scalability; (5) Risk and vendor dependency. Excellent answers should cover: actual TCO comparison (staff salaries, social insurance, vehicle/warehouse depreciation, fuel, insurance) vs. 3PL rate cards; major Vietnam 3PLs (DHL Supply Chain, Kerry Logistics, Yusen Logistics, Giao Hang Nhanh, GHTK for e-com); 3PL contract terms (SLA, penalties, exit clause); hybrid model (keep core routes in-house, use 3PL for overflow/rural); the reality that many Vietnamese 3PLs lack standardized WMS.

Question 4

You manage cold chain distribution of frozen food and vaccines from Hanoi to Central Vietnam and the Central Highlands. In summer, outside temperatures reach 40°C and power infrastructure is unreliable. How do you manage cold chain break risks?

Accepted Answer

Risk management across 4 defense layers: (1) Prevention - equipment standards and pre-departure checks; (2) Early detection - IoT real-time temperature sensors; (3) Response - documented procedure when temperature deviation is detected; (4) Recovery - assessment and disposition of affected cargo. Vietnam-specific points: power infrastructure in the Central Highlands (load-shedding during dry season); Ministry of Health GDP requirements for vaccines and pharmaceuticals; experience with Thermo King vs. Carrier refrigerated units and maintenance; last-mile delivery points with no cold storage; temperature data loggers for audit trail; MKT (Mean Kinetic Temperature) for assessing cumulative thermal impact; FIFO vs. FEFO (First Expired First Out) for perishable goods.

Question 5

A vessel carrying a customer's $2 million machinery shipment is stuck at Singapore port due to a labor dispute, expected to be delayed 3 weeks. The customer's production line has stopped. As freight forwarder, what do you do in the first 24 hours and over the next 3 weeks?

Accepted Answer

Respond on 2 parallel tracks: (1) Immediate crisis management - communication, alternative options, insurance; (2) 3-week recovery plan - air freight, transhipment, damage negotiation. First 24 hours: confirm vessel status with the carrier, immediately notify the customer with verified information (no speculation), check marine insurance policy for delay coverage, review transport contract for force majeure clauses. 3 weeks: assess air freight options (cost vs. lost production value), find transhipment vessel via alternative port, work with carrier to prioritize discharge when port reopens, prepare compensation claim. Top candidates mention Clause 8 (Delay) in cargo insurance and distinguish 'delay' from 'consequential loss'.

Question 6

After 6 months of TMS (Transport Management System) operation, data shows on-time delivery (OTD) is only 82%, below the 95% target. How would you use the TMS to perform root cause analysis and propose specific improvement measures?

Accepted Answer

Apply 5 Whys combined with Pareto analysis: (1) Filter TMS data by dimension (route, cargo type, time window, driver, vehicle), (2) Identify top 20% causes responsible for 80% of delays, (3) Deep-dive each major root cause, (4) Propose measurable improvements. Common Vietnam root causes and how TMS reveals them: traffic congestion (compare ETA vs. ATA by time window and route), vehicle breakdown (track maintenance frequency), suboptimal loading/unloading scheduling at warehouses (dwell time at warehouse), incorrect address data (GPS tracks vs. planned route), drivers not following optimized routes (compliance rate). Candidates should mention distinguishing 'controllable delays' vs. 'uncontrollable delays' in analysis and building a real-time OTD dashboard.

Question 7

You are tasked with developing a logistics strategy connecting a factory in Binh Duong with customers in Hanoi, Da Nang, and Can Tho. Analyze Vietnam-specific infrastructure challenges and options to optimize cost and transit time.

Accepted Answer

Analyze across 3 corridors: (1) Binh Duong - Can Tho (road vs. Mekong waterway), (2) Binh Duong - Da Nang (QL1A highway vs. rail vs. coastal), (3) Binh Duong - Hanoi (truck, train, air, intermodal). Key domain knowledge: North-South Expressway being completed in sections (more sections opening by 2026); North-South railway is slow (~30-40 km/h) but cheap for heavy cargo; Mekong inland waterways have cost advantage but longer transit time; Cai Mep-Thi Vai port for export containers; QL1A through Hai Van Pass is dangerous in rainy season; logistics hubs in Binh Duong (Vsip, Becamex) and Hanoi (Tien Son, Que Vo). Candidates should mention multimodal and cross-docking.

Question 8

Your warehouse fill rate is 88% against a 98% target. Analysis shows the problem centers on 120 slow-moving SKUs that key account customers still require. How would you design an inventory strategy to improve fill rate without increasing overall working capital?

Accepted Answer

Approach from 3 parallel angles: (1) Optimize safety stock for 120 slow-moving SKUs using statistical models (demand variability + lead time variability); (2) Improve demand signal from key accounts (VMI - Vendor Managed Inventory); (3) Rebalance inventory portfolio to redistribute capital (reduce fast-moving buffer to fund slow-moving coverage). Top candidates should know: safety stock formula = Z × σ_demand × √(lead time) + Z × μ_demand × σ_LT; combined ABC/XYZ classification (A: high value, X: stable demand) to set differentiated inventory policies; VMI allows suppliers to see inventory levels and replenish autonomously; consignment stock as a middle-ground solution; cost difference between 95% vs. 98% service level; vendor lead time reduction as a lever to reduce safety stock.