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Salesforce MuleSoft Developer I Exam Questions

Exam Name: Salesforce Certified MuleSoft Developer I
Exam Code: Salesforce MuleSoft Developer I
Related Certification(s):
  • Salesforce Developer Certifications
  • Salesforce MuleSoft Developer I Certifications
Certification Provider: Salesforce
Actual Exam Duration: 120 Minutes
Number of Salesforce MuleSoft Developer I practice questions in our database: 235 (updated: Mar. 30, 2025)
Expected Salesforce MuleSoft Developer I Exam Topics, as suggested by Salesforce :
  • 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.
Disscuss Salesforce Salesforce MuleSoft Developer I Topics, Questions or Ask Anything Related

Aileen

14 days ago
Flow control was a significant topic. Know when to use async, flow-ref, and sub-flows. Pass4Success practice tests really helped reinforce this.
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Alishia

18 days ago
Just became a Certified MuleSoft Developer I! Pass4Success really streamlined my study process.
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Dustin

27 days ago
Mule application architecture questions appeared. Understand modularization, domain projects, and best practices for organizing Mule apps.
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Joesph

1 months ago
API implementation strategies were key. Be prepared to discuss top-down vs. bottom-up approaches and when to use each.
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Hobert

2 months ago
MuleSoft Developer I exam: check! Pass4Success materials were key to my success in such a short time.
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Arleen

2 months ago
Transform Message processor questions were frequent. Practice using DataWeave 2.0 for various data transformations. Pass4Success examples were invaluable!
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Delisa

2 months ago
Aced the exam with knowledge on Mule deployment models. Know the differences between CloudHub, on-premises, and hybrid deployments.
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Lashaunda

2 months ago
Couldn't have passed the MuleSoft Developer I cert without Pass4Success. Their prep materials were invaluable.
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Theron

3 months ago
I passed the MuleSoft Developer I exam, thanks to the practice questions from Pass4Success. One challenging question was about processing records. It asked how to use the Batch Job scope to process large datasets efficiently. I wasn't confident in my answer, but I still passed.
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Elsa

3 months ago
DataSense and metadata concepts were important. Understand how they improve development efficiency and integrate with Anypoint Studio.
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Felicia

3 months ago
Security questions were trickier than expected. Focus on OAuth 2.0, API policies, and Mule's security features. Pass4Success really helped here.
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Margret

3 months ago
Pass4Success came through for me on the MuleSoft Developer I exam. Passed with flying colors!
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Berry

4 months ago
Just cleared the MuleSoft Developer I exam! The practice questions from Pass4Success were essential. There was a tricky question on debugging and troubleshooting Mule applications, particularly about using the Mule debugger to inspect payloads. I had some doubts, but I got through.
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Larue

4 months ago
Passed thanks to solid prep on Mule 4 connectors. Study database, HTTP, and file connectors thoroughly, including configuration options.
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Wai

4 months ago
I passed the MuleSoft Developer I exam, and the Pass4Success practice questions were invaluable. One question that puzzled me was about using connectors. It asked how to configure an HTTP connector to handle different HTTP methods. I wasn't entirely sure, but I managed to pass.
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Katlyn

4 months ago
API design principles were heavily tested. Know RESTful best practices and how to structure resources. Pass4Success materials were spot-on for this!
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Whitley

4 months ago
Certified MuleSoft Developer I now, thanks to Pass4Success! Their questions were surprisingly similar to the real thing.
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Alline

5 months ago
Happy to announce that I passed the MuleSoft Developer I exam! The practice questions from Pass4Success were a great help. There was a question on deploying and managing APIs and integrations, specifically about the best practices for deploying APIs to CloudHub. I had to guess, but I still made it.
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Jolene

5 months ago
Mule event processor questions were challenging. Make sure you understand the flow of data through processors like choice, scatter-gather, and for-each.
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Elinore

5 months ago
I just passed the MuleSoft Developer I exam, and the Pass4Success practice questions were very useful. One question that caught me off guard was about handling errors. It asked how to implement a global error handler to manage different types of exceptions. I wasn't sure of the exact configuration, but I passed.
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Evette

5 months ago
Don't underestimate the importance of Anypoint Platform components. Questions on API Manager and Runtime Manager caught me off guard. Thanks, Pass4Success!
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Leatha

5 months ago
Whew, that exam was tough! Glad I used Pass4Success materials - they really helped me pass.
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Rene

5 months ago
Excited to share that I passed the MuleSoft Developer I exam! The Pass4Success practice questions were spot on. There was a question about structuring Mule applications, particularly on how to organize flows and sub-flows for better maintainability. I had some doubts, but it worked out in the end.
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Lindsey

6 months ago
Mule 4 error handling was a key topic. Study the different error types and how to implement custom error handlers. It really helped me pass!
upvoted 0 times
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Annmarie

6 months ago
I passed the MuleSoft Developer I exam, thanks to the practice questions from Pass4Success. One challenging question was about transforming data with DataWeave. It asked how to convert a JSON payload to XML format while maintaining specific attributes. I wasn't confident in my answer, but I still passed.
upvoted 0 times
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Gayla

6 months ago
Nailed the MuleSoft Developer I certification! Pass4Success made prep so much easier and quicker.
upvoted 0 times
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Aron

6 months ago
Grateful for Pass4Success's prep materials. API-led connectivity concepts were crucial. Be ready to explain the three-layer architecture and its benefits.
upvoted 0 times
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Erick

6 months ago
Just cleared the MuleSoft Developer I exam! The practice questions from Pass4Success were a lifesaver. There was a tricky question on accessing and modifying Mule events, specifically about how to use the Mule Event Context to modify message attributes. I had to think hard about it, but I got through.
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Yuki

7 months ago
I recently passed the Salesforce Certified MuleSoft Developer I exam, and the Pass4Success practice questions were incredibly helpful. One question that stumped me was about creating application networks. It asked how to best design a network to ensure scalability and reusability of APIs. I wasn't entirely sure of the best approach, but I managed to pass the exam.
upvoted 0 times
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Jeannetta

7 months ago
Just passed the MuleSoft Developer I exam! Dataweave questions were tricky, especially transforming complex JSON. Focus on array manipulation and object creation.
upvoted 0 times
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Heike

7 months ago
Just passed the Salesforce Certified MuleSoft Developer I exam! Thanks Pass4Success for the spot-on practice questions.
upvoted 0 times
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Mollie

8 months ago
Passing the Salesforce Certified MuleSoft Developer I exam was a great achievement for me, and I owe it to Pass4Success practice questions. The exam covered important topics like creating Application Networks and designing APIs. One question that I remember struggling with was about identifying when to use query parameters vs URI parameters. Despite my initial confusion, I managed to pass the exam.
upvoted 0 times
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Benton

9 months ago
My exam experience for the Salesforce Certified MuleSoft Developer I exam was successful, thanks to Pass4Success practice questions. The topics of creating Application Networks and designing APIs were crucial for the exam. One question that I found challenging was about using RAML to define various aspects of an API. Despite my uncertainty, I was able to pass the exam.
upvoted 0 times
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Delmy

9 months ago
MuleSoft Developer I certified! Pass4Success's exam prep was efficient and accurate. Couldn't have done it without you guys!
upvoted 0 times
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Bette

10 months ago
I recently passed the Salesforce Certified MuleSoft Developer I exam with the help of Pass4Success practice questions. The exam covered topics such as creating Application Networks and designing APIs. One question that stood out to me was related to the purpose and roles of a Center for Enablement (C4E). I wasn't completely sure of the answer, but I still managed to pass the exam.
upvoted 0 times
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Lang

10 months ago
Feeling accomplished! Aced the Salesforce MuleSoft Developer I cert thanks to Pass4Success. Their exam prep is unbeatable.
upvoted 0 times
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Marget

10 months ago
Mule 4 error handling was a significant part of the exam. You might encounter scenarios where you need to choose appropriate error handlers. Understand try, catch, and on-error scopes. Pass4Success's exam prep materials helped me pass in a short time.
upvoted 0 times
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Ceola

10 months ago
Whew, that exam was tough! But Pass4Success's materials made all the difference. Passed with flying colors, thank you!
upvoted 0 times
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Delisa

10 months ago
Just passed the MuleSoft Developer I exam! Pass4Success's practice questions were spot-on. Thanks for helping me prepare so quickly!
upvoted 0 times
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Paris

10 months ago
Pass4Success, you're a lifesaver! Your practice questions were crucial for my MuleSoft Developer I exam success. Eternally grateful!
upvoted 0 times
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Free Salesforce Salesforce MuleSoft Developer I Exam Actual Questions

Note: Premium Questions for Salesforce MuleSoft Developer I were last updated On Mar. 30, 2025 (see below)

Question #1

Refer to the exhibits.

The Validation component in the Try scope throws an error.

What response message is returned to a client request to the main flow's HTTP Listener?

The Validation component in the Try scope throws an error. What response message is returned to a client request to the main flow's HTTP Listener?

Reveal Solution Hide Solution
Correct Answer: A

Note that private flow has error scope defined as On Error Continue . So when error occurs in private flow , it is handled by this On Error Continue scope which sends success response back to main flow and does not throw back an error. So main continues normally and payload is set to Success - main flow.

Hence correct answer isSuccess - main flow

1) HTTP listener received request

2) The Flow Reference calls the child flow

3) The Is Number validator creates an Error Object because the payload isn't an integer. Child Flow execution stops

#[error.description] = ''payload is not a valid INTEGER value''

#[error.errorType] = VALIDATION:INVALID_NUMBER

4) The On Error Continue handles the errorThe payload is set to ''Error -- Sub Flow''

5) ''Error -- Sub Flow'' is returned to the main flow as if the child flow was a success. The Set Payload is executed. The payload is reset to ''Success -- Finished Main Flow''

6) ''Success -- Main Flow'' is returned to the requestor in the body of the HTTP request. HTTP Status Code: 200

As you can see, in the above example, because the error was caught by an On Error Continue scope in the child flow (RED in, GREEN out) when the Mule Message returns to the parent flow, the parent flow knows none-the-different that there was a failure because the on error continue returns a 200 success message. Note that because, to the mainFlow, the childFlow appeared to succeed, the processing of mainFlow resumed after the flow reference.


Question #2

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 ?

Reveal Solution Hide Solution
Correct Answer: D

* 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

----------------------------------------------------------------------------------------------------------------------------------------

Correct Answer: D


Question #3

Refer to the exhibit.

What is the correct syntax to add a customer ID as a URI parameter in an HTTP Listener's path attribute?

Reveal Solution Hide Solution
Correct Answer: B

Question #4

Refer to the exhibit.

What is the correct way to create a user?

A)

B)

C)

D)

Reveal Solution Hide Solution
Correct Answer: B

Question #5

Where are values of query parameters stored in the Mule event by the HTTP Listener?

Reveal Solution Hide Solution
Correct Answer: C

Correct answer isAttributes.

Query parameters , URI parameters and headers are some of examples which are part of attributes.

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