Free Supply Chain Manager Practice Assessment (2026)

Cohesyve · Practice for candidates

Going for a Supply Chain Manager role? Find out how you'd actually score.

Run a Supply Chain Manager simulation built the same way employers build theirs, and get a full report showing exactly where you lost marks — before it counts.

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Overview

Supply chain assessments tend to combine a numerical exercise with a disruption scenario. You might calculate a reorder point or a safety stock level, then be told a supplier has failed and asked what you do about it. The tasks reward candidates who reason from lead time, variability and cost rather than from instinct, and who can explain a trade-off to a commercial audience. This page covers the formats and the scoring.

Why employers assess this role

Supply chain decisions bind capital and set service levels for months, and the cost of a poor judgement surfaces long after the person has moved on. Employers assess because the trade-off between stock, cost and service is the whole job, and a candidate's ability to hold all three at once only becomes visible when they are given real numbers and a constraint.

What gets tested

Demand forecasting and interpretationInventory calculation — reorder points, safety stock, coverSupplier risk assessment and contingency planningCost, service and working capital trade-offsScenario planning under disruptionNegotiation preparation and supplier communicationData interpretation from spreadsheetsCross-functional stakeholder management

The format

Duration

60–120 minutes

Question types

Numerical inventory or planning calculation
Disruption scenario with a written response plan
Spreadsheet analysis of demand or supplier data
Written recommendation to a commercial stakeholder

Levels

Entry · Mid · Senior

What you'll be asked to do

Do the planning arithmetic

Reorder points, safety stock, cover and order quantities from provided demand and lead time data. Marked on the assumptions as much as the answer.

•Calculate a reorder point from average demand, lead time and stated variability
•Set safety stock for a target service level and justify the target
•Work out the stock cover implied by a proposed order schedule

Handle a disruption

A supplier fails, a shipment is delayed, or demand spikes. Assessors look for sequencing, for the commercial trade-off, and for what gets communicated to whom.

•A key supplier announces a six-week delay; set out your response
•Decide how to allocate short supply across customers
•Choose between expedited freight and a partial shortage, with the cost stated

Assess supplier risk

A supplier base with concentration, geography and performance issues. Scored on whether the risk assessment leads to a proportionate action.

•Rank a supplier base by risk and justify the criteria used
•Decide whether dual sourcing is worth the unit cost increase for a given part
•Identify what you would monitor to see a supplier failure coming

Argue the trade-off

A written recommendation where finance wants less stock and sales wants more availability. Marked on whether both sides are quantified.

•Recommend a stock policy change and quantify the working capital effect
•Explain to a sales director why a service level target has a cost attached
•Present the case for holding more inventory on a single volatile line

Cohesyve for candidates

Practise a Supply Chain Manager assessment before the real one

Run the same AI job simulations companies use to evaluate applicants. You get a scored report showing where you're strong and where you're not, plus what to work on.

Sample tasks — and what strong looks like

Given demand history and a supplier lead time, set the reorder point and safety stock for one item.

Entry

What strong looks like: States the service level being targeted, uses demand variability rather than the average alone, accounts for lead time variability separately, and sense-checks the answer against the cost of holding it. Weak submissions multiply average demand by lead time and add an arbitrary buffer.

A sole-source supplier gives six weeks notice of a production halt. Set out your plan.

Senior

What strong looks like: Quantifies current cover before acting, segments affected products by margin and customer commitment, runs alternative sourcing and expediting in parallel rather than sequentially, and tells sales what to stop promising immediately. Weak answers begin by searching for a new supplier and communicate late.

You can supply 60% of the quantity three customers have ordered. Allocate it.

Mid

What strong looks like: Applies a stated allocation rule — contractual commitment, margin, strategic relationship, downstream consequence of shortage — consistently, and communicates the decision to each customer with a revised date. Weak answers split the volume evenly and call it fair without testing whether it is.

Finance wants inventory reduced by a fifth. Respond with a recommendation.

Mid

What strong looks like: Identifies where the stock actually sits — slow-moving lines, obsolete holdings, safety stock on stable items — proposes reductions that carry the least service risk, quantifies both the cash released and the availability exposure, and names what would be given up. Weak answers apply a flat percentage across every line.

How to prepare

#1
Practise reorder point and safety stock calculations until you handle demand variability and lead time variability as separate inputs rather than one buffer.
#2
Rehearse stating the service level assumption explicitly at the start of any inventory answer, because assessors look for it and most candidates skip it.
#3
Work through a disruption scenario end to end, forcing yourself to quantify current cover before proposing any action.
#4
Prepare a clear allocation rule you can defend, since short-supply allocation appears in most mid-level assessments.
#5
Practise quantifying both sides of a stock decision — cash released and service risk taken — in the same paragraph.
#6
Sit a timed simulation that combines a calculation with a written recommendation, because splitting time between the two is where candidates most often run short.

Common mistakes

Using average demand and average lead time with no allowance for variability.
Applying a flat percentage stock reduction across every line regardless of risk.
Allocating short supply evenly to avoid making a decision.
Proposing a contingency without costing it against the shortage it prevents.
Leaving sales and customers uninformed until the recovery plan is finalised.
Recommending dual sourcing as a universal answer without testing it against the unit cost for that part.

How it's scored

Criterion	What strong looks like
Quantitative accuracy	The calculations are correct, the inputs are labelled, and variability is treated properly rather than averaged away.
Assumption discipline	Service level, lead time and demand assumptions are stated up front and tested for sensitivity.
Trade-off reasoning	Cost, service and working capital are all quantified, and the recommendation names what is being given up.
Disruption response	Cover is quantified before action, workstreams run in parallel, and affected commitments are communicated early.
Stakeholder communication	The recommendation is written for a commercial reader, leads with the decision, and translates stock language into cash and service terms.

Frequently Asked Questions

How much maths is involved?

Enough to set a reorder point, a safety stock level and a cover figure, usually in a spreadsheet. The arithmetic is not difficult; the marks come from whether variability is handled properly and the assumptions are stated.

Do I need experience with a particular ERP system?

Seldom. Assessments are normally spreadsheet-based so candidates from different systems can be compared. System familiarity is treated as trainable in a way that planning judgement is not.

Will the scenario match my industry?

Not always. The disruption and allocation scenarios transfer across manufacturing, retail and distribution, and assessors are looking at your reasoning rather than at sector-specific vocabulary.

What is the most common reason candidates lose marks?

Averaging away variability, and recommending a stock policy without quantifying the service risk on the other side of it. Both are easy to correct once you have seen them flagged.

Can I practise a full one first?

You can. Cohesyve offers five free scored assessments every month, which covers a complete supply chain simulation and a report on how your calculations and trade-off reasoning were marked.

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Cohesyve · Practice for candidates

Practise a Supply Chain Manager assessment now — free.

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