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Last Updated: Oct 11, 2026

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Plenty of capable IT professionals underestimate the Mule-Dev-301 exam and pay for it on score day. PracticeMaterial prepares you properly: 62 practice questions for the Salesforce Certified MuleSoft Developer II exam, each with a verified answer, built around the live objectives.

Salesforce Mule-Dev-301 Exam Overview:

Certification Vendor:Salesforce
Exam Name:Salesforce Certified MuleSoft Developer II
Exam Number:Mule-Dev-301
Passing Score:70%
Related Certifications:Salesforce Certified MuleSoft Architect
Salesforce Certified MuleSoft Developer I
Real Exam Qty:60-65
Certificate Validity Period:Valid indefinitely; requires maintenance updates
Exam Format:Multiple choice, Scenario-based questions
Available Languages:English
Exam Price:$400 USD
Exam Duration:120 minutes
Recommended Training:Trailhead: MuleSoft Developer II Preparation
MuleSoft Training: Advanced Development
Exam Registration:Salesforce Certification Registration
Sample Questions: DOWNLOAD DEMO
Exam Way:Online proctored or onsite testing center
Pre Condition:Recommended: Salesforce Certified MuleSoft Developer I or equivalent experience; 1+ year building Mule 4 applications
Official Syllabus URL:https://trailhead.salesforce.com/en/credentials/certification-detail-print?searchString=SalesforceCertifiedMuleSoftDeveloperII

Salesforce Mule-Dev-301 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Secure Data at Rest and in Transit20%- Expose and invoke APIs over HTTPS
- Manage keys and certificates
- Manage secure environment properties
- Implement security policies
Topic 2: Design and Implement API-led Connectivity13%- Implement HTTP callbacks/webhooks
- Implement API autodiscovery
- Implement server-side caching
Topic 3: Implement Maintainable and Modular Mule Applications and Maven Builds25%- Create reusable libraries
- Implement automated deployment
- Execute tests with Maven
- Modularize applications and builds
- Build custom policies and processors
Topic 4: Implement Performant and Reliable Mule Applications27%- Validate messages and payloads
- Use ObjectStore for persistence
- Optimize performance and throughput
- Handle HTTP API invocations and errors
- Implement reliable messaging patterns
Topic 5: Implement Monitorable Mule Applications15%- Implement logging and log management
- Implement message correlation
- Expose health check endpoints
- Monitor applications and runtimes

Salesforce Mule-Dev-301 Exam: Straight Answers to Real Questions

There is, and we recommend it. PracticeMaterial posts a free demo of the Salesforce Certified MuleSoft Developer II questions on the product page — download it or leave your email and we will send it over. Buying includes 365 days of free updates; when that year runs out, you can extend the update service at a 50% discount from your member zone.

The passing mark for the Salesforce Certified MuleSoft Developer II exam is 70%, and one attempt costs $400 USD. Retakes are charged at full price again, so walking in underprepared is an expensive mistake. A practical safeguard: rehearse with PracticeMaterial practice questions until your timed mock scores clear 70% with room to spare, then book the real Mule-Dev-301 exam.

Delivery format for the exam itself: Online proctored or onsite testing center. Pick whichever option fits your situation when scheduling.

Salesforce structures the Salesforce Certified MuleSoft Developer II exam around 5 domains. The heaviest hitters are Implement Performant and Reliable Mule Applications (27% of the exam), Implement Maintainable and Modular Mule Applications and Maven Builds (25% of the exam), Secure Data at Rest and in Transit (20% of the exam). Start your revision where the weight is, and scroll up to the outline section on this page for the complete topic list.

The Mule-Dev-301 exam is the official Salesforce assessment that awards the Salesforce Certified MuleSoft Developer II certification — a credential at the Advanced / Professional level. Passing it proves vendor-validated skills that employers actively look for. It belongs to a broader track that includes Salesforce Certified MuleSoft Developer I, Salesforce Certified MuleSoft Architect, making it a solid anchor for further certifications.

Delivery first: your Mule-Dev-301 product downloads instantly, and a copy reaches your email within one minute of payment. Nothing after 2 hours (spam folder checked)? Contact our online service and we will resolve it at once. Install limits do not exist — use as many computers as you like. On refunds: if you sit the corresponding Mule-Dev-301 exam within 60 days of purchase and fail, you qualify for a full refund. File the claim within 2 days after the exam with a scanned enrollment slip and the official Score Report PDF; processing completes within 7 days. The guarantee excludes attempts made within 3 days of purchase, downloads never used in an actual exam, free materials, and expired orders, and the candidate name must match the payer name. Rather keep studying? Swap your product for two free exam products of equal value — your original purchase keeps its update service either way.

Expect 60-65 questions within 120 minutes on the Salesforce Certified MuleSoft Developer II exam. Divide the two and the pace is unforgiving — there is little slack for second-guessing. Build speed deliberately: run full-length timed sessions in the PracticeMaterial test engine, practice marking hard questions for review, and treat every mock as a dress rehearsal for the real Mule-Dev-301 exam.

Salesforce points Salesforce Certified MuleSoft Developer II candidates toward these official training resources:

Coursework builds understanding; the 62 practice questions for the Mule-Dev-301 exam from PracticeMaterial then prove whether that understanding survives a real testing clock.

Recommended: Salesforce Certified MuleSoft Developer I or equivalent experience; 1+ year building Mule 4 applications Because Salesforce can revise these requirements, verify the current rules on the official exam page — https://trailhead.salesforce.com/en/credentials/certification-detail-print?searchString=SalesforceCertifiedMuleSoftDeveloperII — before scheduling your Salesforce Certified MuleSoft Developer II exam.

Salesforce Certified MuleSoft Developer II Sample Questions:

Question #1

A Mule application uses API autodiscovery to access and enforce policies for a RESTful implementation.
What needs to be configured for the flowRef attribute of the autodiscovery global element?

  • A. Nothing because flowRef is an optional attribute which can be passed during runtime
  • B. The name of the flow that has HTTP Listener to receive all incoming RESTful operation requests
  • C. Any of the APIkit generated implementation flows
  • D. The name of the flow that has APIkit Console to receive all incoming RESTful operation requests
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Question #2

Which plugin or dependency is required to unit test modules created with XML SDK?

  • A. XMLUnit
  • B. MUnit Extensions Maven plugin
  • C. MUnit Maven plugin
  • D. JUnit
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Explanation: Only visible for PracticeMaterial members. You can sign-up / login (it's free).

Question #3

Which pattern should be used to invoke multiple HTTP APIs in parallel and roll back any failed requests in sequence?

  • A. VM queues as a reliability pattern with error handlers to roll back any requests
  • B. Scatter-Gather as central Saga orchestrator for all API requests with compensating actions for failing routes
  • C. A database as a transactional outbox and an Until Successful router to retry any requests
  • D. A Parallel For Each scope with each HTTP request wrapped in a Try scope
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Explanation: Only visible for PracticeMaterial members. You can sign-up / login (it's free).

Question #4

When implementing a synchronous API where the event source is an HTTP Listener, a developer needs to return the same correlation ID back to the caller in the HTTP response header.
How can this be achieved?

  • A. Enable the CorrelationID checkbox in the HTTP Listener configuration
  • B. No action is needed as the correlation ID is returned to the caller in the response header by default
  • C. Configure a custom correlation policy
  • D. Enable the auto-generate CorrelationID option when scaffolding the flow
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Explanation: Only visible for PracticeMaterial members. You can sign-up / login (it's free).

Question #5

A Mule application includes a subflow containing a Scatter-Gather scope. Within each leg of the Scatter- Gather, an HTTP connector calls a PUT endpoint to modify records in different upstream systems. The subflow is called from inside an Until Successful scope to retry if a transient exception is raised.
A technical spike is being performed to increase reliability of the Mule application.
Which steps should be performed within the Mule flow above to ensure idempotent behavior?

  • A. Ensure an error-handling flow performs corrective actions to roll back all changes if any leg of the Scatter-Gather fails
  • B. None; the flow already exhibits idempotent behavior
  • C. Change the PUT requests inside the Scatter-Gather to POST requests
  • D. Remove the PUT requests from the Scatter-Gather and perform them sequentially
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

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