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Salesforce Certified MuleSoft Developer (Mule-Dev-201) Exam Questions
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- Salesforce MuleSoft Developer I Certifications
- Topic 1: Creating Application Networks: The topic of creating Application Networks encompasses understanding MuleSoft’s proposal for closing the IT delivery gap and describing the role and characteristics of the modern API. It also includes the purpose and roles of a Center for Enablement (C4E), and the benefits of API-led.
- Topic 2: Designing APIs: Designing APIs involves describing the lifecycle of the modern API and using RAML to define various aspects of an API. It includes identifying when to use query parameters vs URI parameters, and defining API parameters.
- Topic 3: Accessing and Modifying Mule Events: It describes the Mule event data structure. Moreover, the topic focuses on usage of transformers and enriching Mule events.
- Topic 4: Structuring Mule Applications: Structuring Mule applications covers parameterizing an application and defining and reusing global configurations. It includes breaking an application into multiple flows using private flows, subflows, and the Flow Reference component.
- Topic 5: Building API Implementation Interfaces: This topic involves manually creating a RESTful interface for a Mule application and generating a REST Connector from a RAML specification. It also includes describing the features and benefits of APIkit.
- Topic 6: Using Connectors: It focuses on retrieving data from REST services using HTTP Request or REST Connector. Moreover, the topic covers using a Web Service Consumer connector for SOAP web services and the Transform Message component.
- Topic 7: Processing Records: Processing records includes methods for processing individual records in a collection and explaining how Mule events are processed by the For Each scope. It also involves using the Batch Job with Batch Steps and a Batch Aggregator.
- Topic 8: Transforming Data with DataWeave: It involves writing DataWeave scripts and using DataWeave functions. This topic also includes defining and using DataWeave variables, functions, and modules, and applying correct syntax.
- Topic 9: Routing Events: It focuses on using the Choice router for conditional logic and the Scatter-Gather router to multicast events. This topic also involves validating data by using the Validation module.
- Topic 10: Handling Errors: Handling errors includes describing default error handling in Mule applications and defining custom global default error handlers. It involves comparing On Error Continue and On Error Propagate scopes, creating error handlers for a flow, using the Try scope, and mapping errors to custom application errors.
- Topic 11: Debugging and Troubleshooting Mule Applications: Using breakpoints to inspect a Mule event during runtime, installing missing Maven dependencies, and reading and deciphering Mule log error messages are sub-topics of this topic.
- Topic 12: Deploying and Managing APIs and Integrations: It includes packaging Mule applications for deployment and deploying them to CloudHub. This topic also involves using CloudHub properties, creating and deploying API proxies, connecting an API implementation to API Manager, and applying policies to secure an API.
Free Salesforce Salesforce Certified MuleSoft Developer (Mule-Dev-201) Exam Actual Questions
Note: Premium Questions for Salesforce Certified MuleSoft Developer (Mule-Dev-201) were last updated On May. 07, 2026 (see below)
Refer to the exhibits.
What is written to the records.csv file when the flow executes?
Transform Message Add write_date is coverting payload in JSON format and same JSON payload is avaialble to file write processor. However, if the payload is a different format (for example, not CSV) , you can place the transformation inside the Write operation to generate content that will be written without producing a side effect on the message in transit. This is not done in this case. By default, the connector writes whatever is in the message payload. Hence JSON payload will be written to file.
Correct answer is {customerID}.
A function named toUpper needs to be defined that accepts a string named userName and returns the string in uppercase.
What is the correct DW code to define the toUpper function?
As a part of requirement , application property defined below needs to be accessed as dataweave expression. What is the correct expression to map it to port value?
Option 1 is the correct syntax
Refer to the exhibits.
What is the response when a client submits a request to http://localhost:8081?
-----------------------------------------------------------------------------------------------------------------------------------
Here's specifically what is happening here:
1) Payload is successfully set to ''Before''
2) Is null validation is used which will pass the message only if payload is null. In this case as payload is not null, it creates an Error Object. Flow execution stops
#[error.description] = ''Validation error''
3) Because no error handler is defined, the Mule default error handler handles the error
4) ''Validation error'' is the error message returned to the requestor in the body of the HTTP request with HTTP Status Code: 500
Reference diagram:
Why would a Mule application use the ${http.port} property placeholder for its HTTP Listener port when it is deployed to CloudHub?
This helps CloudHub to dynamically allocates a port at deployment time.
MuleSoft Doc Ref :https://docs.mulesoft.com/mule-runtime/4.3/deploy-to-cloudhub#prerequisites
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