MuleSoft Developer (Level 1, Mule 4) Practice Test

The MuleSoft Developer (Level 1, Mule 4) Practice Test is a free intermediate-level, 20-minute skill test from Science of Apps. It tests readiness for the MuleSoft Certified Developer – Level 1 (Mule 4) exam — API-led connectivity and API design on Anypoint Platform, the Mule event and DataWeave transformations, flows, routing and error handling, and connectors, deployment, API management and testing with MUnit — written to the MuleSoft certification outline and MuleSoft documentation for 2026. Independent practice; not affiliated with MuleSoft or Salesforce. Score 70% or more on its 20 questions to earn a verifiable MuleSoft Developer Proficiency certificate (SOA-MDX). Every question is based on published standards and research — including MuleSoft Certified Developer – Level 1 (Mule 4) (MuleSoft (Salesforce)), DataWeave language (MuleSoft Documentation), On Error Continue and On Error Propagate (MuleSoft Documentation) — and each answer is explained with its source.

Yes. Science of Apps has a free MuleSoft Developer (Level 1, Mule 4) Practice Test built on the current MuleSoft exam outline for 2026 and 2027. It covers API-Led connectivity and API design, the mule event and DataWeave, flows, routing and error handling and connectors, deployment, API management and testing, scores you instantly and issues a verifiable certificate.

Read the four skill areas on this page, then take the 20-minute test online — no fee, course or sign-up. You see every answer explained when you finish. Score 70% or more and you get a MuleSoft Developer Proficiency certificate straight away, on screen, as a PDF and by email, with a credential ID anyone can verify.

Yes. The questions are original scenarios written by Science of Apps, and each one is based on a public source you can read: MuleSoft Certified Developer – Level 1 (Mule 4) (MuleSoft (Salesforce)); DataWeave language (MuleSoft Documentation); On Error Continue and On Error Propagate (MuleSoft Documentation); API-led connectivity overview (MuleSoft Documentation); About the Mule event (MuleSoft Documentation); MUnit testing framework (MuleSoft Documentation). The source is shown under each question and linked in the answer review. Science of Apps doesn't copy questions from other tests.

Four skill areas with five questions each, drawn from a bank of 10 per area so a retake brings new questions: API-Led Connectivity and API Design (API layers, API specifications and Anypoint Platform); The Mule Event and DataWeave (Mule event, DataWeave basics and Transformations); Flows, Routing and Error Handling (Flows and subflows, Routers and scopes and Error handling); Connectors, Deployment, API Management and Testing (Connectors and properties, Deployment and policies and Testing). Every question is an original scenario written to the 2026–2027 standard, with the published source named under it.

MuleSoft or integration developer, API developer, Integration architect in training, Salesforce developer working with integrations and Middleware engineer. It suits anyone who wants a quick, verifiable way to show MuleSoft Developer knowledge in 2026 and 2027, from students and career switchers to experienced professionals.

It tests building and managing basic Mule 4 applications and APIs: designing APIs, using Anypoint Platform, structuring Mule applications, transforming data with DataWeave, routing events, handling errors, using connectors, processing records and deploying and managing APIs.

API-led connectivity organises integration into three layers of reusable APIs: System APIs that unlock data from core systems, Process APIs that combine and orchestrate data, and Experience APIs that shape data for a particular channel or user.

No. It is an independent practice test written to the publicly available MuleSoft Developer content outline for 2026 and 2027, for checking your readiness before you book the real exam. Passing earns a Science of Apps certificate rather than the official credential.

Yes. The test is online, in English and free everywhere — people take it from India, the US, the UK, Europe, Africa, Latin America and Asia-Pacific. Your certificate is dated with your own local date and can be verified from anywhere at scienceofapps.com/certification/verify/.

20 questions — 5 from each of 4 skill areas — with a 20-minute limit. You need 70% (14 of 20) to pass and 90% for distinction.

We rate it Intermediate: assumes hands-on experience in the role. It has 20 scenario questions — 5 from each of 4 skill areas — and a 20-minute limit. You need 70% (14 of 20) to pass and 90% for distinction.

Nothing. There is no fee to take a test, to receive the certificate, to have it emailed or to verify it, and no sign-up.

On our server, not in your browser. The answers never reach the page until you submit, so a certificate can only be earned by passing. Each certificate gets a unique credential ID stored by Science of Apps.

You see your score for each area and every question with the correct answer and why, with the published source behind it. You can retake after 30 minutes, and the retake draws questions you haven't seen yet.

No. Every certificate is dated, so it always shows when you passed. Retake a test any time for a newer date or a higher score.

Yes. After you pass, Add to LinkedIn opens the Licenses & certifications form with the certificate name, Science of Apps as the issuer, the issue date, your credential ID and the verification link filled in. You can also download it as a PDF or PNG, and it's emailed to you as a PDF.

Every certificate has a credential ID and a QR code. Scanning it, or entering the ID at scienceofapps.com/certification/verify/, shows the holder's name, the certification, the score and the issue date from our records.

No. They are Science of Apps' own assessments of applied skill. They aren't issued by a university or standards body, and they work best alongside a portfolio that shows the skills in real work.