The Salesforce Certified MuleSoft Developer exam validates your ability to design, build, and deploy integration solutions using MuleSoft within the Salesforce ecosystem. This credential is essential for developers pursuing the Salesforce Developer, MuleSoft Developer I path who need to demonstrate hands-on expertise in API-led connectivity and enterprise integration patterns. This page guides you through the exam syllabus, question formats, and effective preparation strategies to help you pass with confidence.
Use this topic map to guide your study for the Salesforce Certified MuleSoft Developer credential within the Salesforce Developer, MuleSoft Developer I path.
The Salesforce-MuleSoft-Developer-I exam uses multiple question types to assess both conceptual knowledge and practical decision-making in real-world integration scenarios.
Questions progress in difficulty and emphasize practical application over memorization, reflecting how integration developers solve problems on actual Salesforce and MuleSoft projects.
Effective preparation requires mapping exam topics to hands-on practice and progressive review. Dedicate 4-6 weeks to study, allocating time based on topic weight and your current experience level. Combine concept review with lab work and practice tests to build both depth and speed.
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DataWeave transformations, error handling, and API design typically account for a significant portion of the exam. Connectors, routing logic, and application deployment also appear frequently. Focus your study time on these areas while ensuring you have solid foundational knowledge across all topics.
In a typical flow, connectors retrieve data, DataWeave transforms it into the required format, routing logic directs it based on conditions, and error handlers catch failures at each stage. Understanding how these components interact, rather than studying them in isolation, helps you design robust integrations and answer scenario-based questions correctly.
While the exam doesn't require years of production experience, you should have built at least 3-5 working Mule applications covering connectors, transformations, and error handling. Lab practice is essential; focus on labs that involve real-world scenarios like API consumption, data mapping, and deployment.
Misunderstanding DataWeave syntax and operator precedence, confusing error handler scopes, overlooking API versioning best practices, and misjudging when to use subflows versus flows are frequent errors. Additionally, candidates often underestimate the importance of deployment and monitoring topics. Review explanations for every practice question you get wrong.
In the final week, take a full-length timed practice test to assess readiness and identify remaining weak spots. Spend 2-3 days drilling those specific topics with focused question sets and lab review. In the last 2-3 days, do a lighter review of key definitions and workflows rather than learning new material; prioritize sleep and stress management to enter the exam alert and confident.
A company has defined two RAML fragments, Book Data Type and Book Example to be used in APIs.
What would be valid RAML to use these fragments ?
* RAML file contains lot of information that could be considered as 'not API-describing'. Sort of 'economy-class' members.
Equally important, but not necessarily part of the main RAML file.
* Through !includes, RAML allows us to build file-distributed API definitions, which is not only useful to encourage code reuse but also improves readability.
* We can create RAML fragments with such code and then include them in main RAML project using !include like:
types:
Book: !include bookDataType.raml and
examples:
input: !include bookExample.raml
* Additionally for
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Correct Answer: D
Refer to the exhibit.
The Database Select operation returns five rows from a database. What is logged by the Logger component?
Refer to the exhibit.
The API needs to be updated using the company-wide standard for the Plan data type. The Object data type has already been published in Anypoint Exchange with the global reference . ACME/DataTypes/PlanDataType.raml.
What is a valid RAML specification that reuses the Plan data type?
A)
B)
C)
D)
As can be seen in RAML, POST expects input in application/json format which eliminates two of the options as two options are in xml format.
Now out of the two remaining options, one has id field in request which is only mentioned for get response and not for POST request. Hence id field is not expected in POST request.
Hence correct answer is
{
'name': 'GoerdiLa Forge',
'address': '1 Westland CA',
'customer_since': '2014-01-04',
'balance': '4829.29',
'bank_agend_id': '12556'
}
Refer to the exhibits.
The two Mule configuration files belong to the same Mule project. Each HTTP Listener is configured with the same host string and the port number, path, and operation values are shown in the display names.
What is the minimum number of global elements that must be defined to support all these HTTP Listeners?
In this case three configurations will be required each for port 8000, 6000 and 7000.
There would be three global elements defined for HTTP connections.
Each HTTP connection will have host and port. One example shown below with host as localhost and port 6000
To use an HTTP listener, you need to declare a configuration with a corresponding connection. This declaration establishes the HTTP server that will listen to requests.
Additionally, you can configure a base path that applies to all listeners using the configuration.
<http:listener-config name='HTTP_Listener_config' basePath='api/v1'>
<http:listener-connection host='0.0.0.0' port='8081' />
</http:listener-config>
https://docs.mulesoft.com/http-connector/1.6/http-listener-ref#http-listener-configuration
A Mule application's HTTP Listener is configured with the HTTP protocol. The HTTP listeners port attribute is configured with a property placeholder named http.port. The mule application sets the http.port property placeholder's value to 9090
The Mule application is deployed to CloudHub without setting any properties in the Runtime manager Properties tab and a log message reports the status of the HTTP listener after the Mule application deployment completes.
After the mule applications is deployed, what information is reported in the worker logs related to the port on which the Mule application's HTTP Listener listens?
Cloudhub expose services on port 8081 and override value in http.port with this one .
Sample log in Runtime Manager is below
21:15:53.148 08/08/2021 Worker-0 ArtifactDeployer.start.01 INFO
Listening for connections on 'http://0.0.0.0:8081'
