Salesforce Mule-Dev-301 Actual Free Exam Questions & Community Discussion

Exam Code/Number: Mule-Dev-301
Exam Name/Title: Salesforce Certified MuleSoft Developer II
Certification Provider: Salesforce
Corresponding Certification: Salesforce MuleSoft

Exam Questions: 62
Updated On: Oct 12, 2026

Question #1

A Mule application deployed to multiple CloudHub 2.0 replicas needs to temporarily persist large files over
10MB between flow executions, and routinely needs to query whether the file data exists on separate executions.
How can this be achieved?

A. Store the key and full contents of the file in an Object Store

B. Use an in-memory Object Store

C. Use the file connector to store and read the file, caching the filename and location between requests

D. Store the contents of the file on separate storage, and store the key and location of the file using Object Store v2

Discussion 0

Correct Answer: D Vote an answer

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Question #2

A developer deploys an API to CloudHub and applies an OAuth API policy in API Manager. During testing, the API response is slow, so the developer reconfigures the API so that the out-of-the-box HTTP Caching policy is applied first, and the OAuth API policy is applied second.
What will happen when an HTTP request is received?

A. In case of a cache miss, both the OAuth and HTTP Caching policies are evaluated; then the API retrieves the data from the API implementation, and the policy does not store the data in Object Store

B. In case of a cache miss, only the HTTP Caching policy is evaluated; then the API retrieves the data from the API implementation, and the policy stores the data to be cached in Object Store

C. In case of a cache hit, both the OAuth and HTTP Caching policies are evaluated; then the cached response is returned to the caller

D. In case of a cache hit, only the HTTP Caching policy is evaluated; then the cached response is returned to the caller

Discussion 0

Correct Answer: D Vote an answer

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Question #3

A scatter-gather router is configured with four routes: Route A, B, C and D.
Route C fails.
Which expression allows access to the failing route so that it can be compensated?

A. payload.failures[2]

B. error.errorMessage.payload.failures[2]

C. error.errorMessage.payload.results[2]

D. payload[2]

Discussion 0

Correct Answer: B Vote an answer

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Question #4

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

A. A Parallel For Each scope with each HTTP request wrapped in a Try scope

B. A database as a transactional outbox and an Until Successful router to retry any requests

C. VM queues as a reliability pattern with error handlers to roll back any requests

D. Scatter-Gather as central Saga orchestrator for all API requests with compensating actions for failing routes

Discussion 0

Correct Answer: D Vote an answer

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Question #5

A Mule application exposes an API for creating payments. An Operations team wants to ensure that the Payments API is up and running at all times in production.
Which approach should be used to test that the Payments API is working in production?

A. Monitor the Payments API directly, sending real customer payment data

B. Create a health check endpoint that reuses the same port number and HTTP Listener configuration as the API itself

C. Create a health check endpoint that listens on a separate port and uses a separate HTTP Listener configuration from the API

D. Configure the application to send health data to an external system

Discussion 0

Correct Answer: B Vote an answer

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Question #6

An organization uses CloudHub to deploy all of its applications.
How can a common-global-error-handler flow be configured so that it can be reused across all of the organization's deployed applications?

A. Create a Mule plugin project. Create a common-global-error-handler flow inside the plugin project. Use this plugin as a dependency in all Mule applications. Import that configuration file in Mule applications.

B. Create a common-global-error-handler flow in all Mule applications. Refer to it via flow-ref wherever needed.

C. Create a Mule plugin project. Create a common-global-error-handler flow inside the plugin project. Use this plugin as a dependency in all Mule applications.

D. Create a Mule domain project. Create a common-global-error-handler flow inside the domain project.
Use this domain project as a dependency.

Discussion 0

Correct Answer: A Vote an answer

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Question #7

A company has been using CI/CD. Its developers use Maven to handle build and deployment activities.
What is the correct sequence of activities that takes place during the Maven build and deployment?

A. Validate, initialize, compile, test, package, install, verify, deploy

B. Validate, initialize, compile, package, test, install, verify, deploy

C. Initialize, validate, compile, test, package, verify, install, deploy

D. Validate, initialize, compile, test, package, verify, install, deploy

Discussion 0

Correct Answer: D Vote an answer

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