Salesforce Mule-Dev-201 Exam Questions : Salesforce Certified MuleSoft Developer

Exam Code: Mule-Dev-201
Exam Name: Salesforce Certified MuleSoft Developer
Updated: Aug 07, 2026
Q&As: 237 Questions and Answers

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Salesforce Mule-Dev-201 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Accessing and Modifying Mule Events	10%	- Use DataWeave for transformation - Enrich events using connectors - Access and modify payload, attributes and variables
Topic 2: Deploying and Managing Applications	10%	- Monitor and manage applications - Explain deployment models - Deploy to CloudHub and on-premises
Topic 3: Security and Governance	7%	- Apply security policies - Manage access and authentication - Enforce governance standards
Topic 4: Error Handling and Transactions	8%	- Handle retries and dead-letter queues - Configure error handlers - Implement transaction management
Topic 5: Building API Implementations	10%	- Implement APIs from specifications - Use connectors to integrate systems - Implement routing and transformation logic
Topic 6: Structuring Mule Applications	10%	- Use flows, subflows and flow references - Manage error handling and scopes - Organize configurations and properties
Topic 7: Data Transformation with DataWeave	10%	- Handle different data formats - Write expressions and functions - Transform complex data structures
Topic 8: Testing and Debugging	10%	- Use mocking and test doubles - Write unit tests with MUnit - Debug applications using Anypoint Studio
Topic 9: Creating Application Networks	7%	- Describe Anypoint Platform components - Identify application network concepts - Explain API-led connectivity principles
Topic 10: Designing APIs	8%	- Define API specifications with RAML - Use REST API methods and resources - Define parameters, responses and data types

Salesforce Certified MuleSoft Developer Sample Questions:

1. Refer to the exhibits.

The mule application is debugged in Anypoint Studio and stops at the breakpoint as shown in below exhibit.
What is the value of the payload displayed in the debugger at this breakpoint?

A) Process
B) Finished
C) Payload is always empty at the breakpoint
D) Start

2. Refer to the exhibit.
In the execution of the Scatter-Gather, the "steep 1 sec" Flow Reference takes about 1 second to complete, and the "sleep 5 sees" Row Reference takes about 5 seconds to complete.
About how many seconds does it take from the time the Scatter-Gather is called until the Set Payload transformer is called?

A) 5
B) 0
C) 6
D) 1

3. Refer to the exhibit.

The default scope in choice router recursively calls the color flow.
A web client sends a PUT request to the HTTP listener with payload Blue.
What response is returned to the web client?

A) "Green"
B) A timeout error
C) ["Blue", "Red", "Blk"]
D) "Blk"

4. Refer to the exhibit. The input array of stringsis passed to the batch job, which does NOT do any filtering or aggregating. What payload is logged by the Logger component?