MuleSoft MCD-Level-1 Questions Answers
MuleSoft Certified Developer - Level 1 (Mule 4)- 235 Questions & Answers
- Update Date : October 19, 2026
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MuleSoft MCD-Level-1 Sample Questions
Question # 1According to Semantic Versioning, which version would you change for incompatible API changes?
A. No change
B. MINOR
C. MAJOR
D. PATCH
Question # 2
Mule application contains ActiveMQ JMS dependency. Mule application was compiled and run successfully in Anypoint Studio. The mule application must now be exported from Anypoint Studio and shared with other developer. What export options should be selected to create the smallest JAR file that can be imported into other developer's Anypoint Studio and run successfully?
A. Select only Attach Project Sources only
B. Select both Attach Project Sources and Include project modules and dependencies option
C. Select the Include project modules and dependencies option only
D. De-select both Attach Project Sources and Include project modules and dependencies option
Question # 3
What valid RAML retrieves details on a specific customer by its customerId as a URI parameter?
A.
1. /customers:
2. /get:
3. /customerId:
B. 1. /customers: 2. /{customerId}: 3. get:
C. 1. /customers: 2. /customerId: 3. get:
D. 1. /customers: 2. get: 3. /{customerId}:
Question # 4
Which of the module is imported automatically in Dataweave scripts?
A. dw::core
B. dw::System
C. dw::Runtime
D. dw::Crypto
Question # 5
From which application , Organization Administrators can approve/revoke/delete SLA tier access requests
A. API Exchange
B. API Portal
C. API Gateway
D. API Manager
Question # 6
Following Mulesoft's recommended API-led connectivity approach , an organization has created an application network. The organization now needs to create API's to transform , orchestrate and aggregate the data provided by the other API's in the application network. This API should be flexible enought ot handle the data from additional API's in future. According to Mulesoft's recommended API-led connectivity approach , what is the best layer for this new API?
A. Process layer
B. System layer
C. Experience layer
D. Data layer
Question # 7
Does a root element required when creating a XML response using Dataweave?
A. Depends on requirement
B. Not required
C. Always required
D. None of these
Question # 8
What module and operation will throw an error if a Mule events payload is not number ?
A. Filter modules Is Number operation
B. Validation modules Is Number operation
C. Validation modules Is not Number operation
D. None of these
Question # 9
What HTTP method in a RESTful web service is typically used to completely replace an existing resource?
A. GET
B. PATCH
C. PUT
D. POST
Question # 10
The new RAML spec has been published to Anypoint Exchange with client credentials. What is the next step to gain access to the API?
A. Request access to the API in Anypoint Exchange
B. Email the owners of the API
C. Create a new client application
D. No additional steps needed
Question # 11
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?
A. { port : p('db.port')}
B. { port : {db:port}}
C. { port : p['db.port']}
D. Application property cannot be accessed in Dataweave
Question # 12
A RAML example fragment named StudentExample.raml is placed in the examples folder in an API specification project. What is the correct syntax to reference the fragment?
A. examples: !include StudentExample.raml
B. examples: #import StudentExample.raml
C. examples: !include examples/StudentExample.raml
D. examples: #import examples/StudentExample.raml
Question # 13
What should this endpoint return considering the API is build using standard practices? http://dev.acme.com/api/patients?year=2021
A. Patient with id 2021
B. Patients from year 2021
C. No patients
D. All patients
Question # 14
Refer to the exhibits. APIKit router is used to generate the flow components for RAML specification. The Mule application must be available to REST clients using the two URL's http://localhost:8081/internal and http://localhost:8081/external How many APIKit Router components are generated to handle requests to every endpoint defined in RAML specification? 1.Library.raml 2./books 3. get: 4. post: 5./order: 6. get 7. patch 8./members 9. get:
A. 1
B. 2
C. 3
D. 5
Question # 15
A Utlility.dwl is located in a Mule project at src/main/resources/modules. The Utility.dwl file defines a function named encryptString that encrypts a String What is the correct DataWeave to call the encryptString function in a Transform Message component?
A.
1. %dw 2.0
2. output application/json
3. import modules::Utility
4. ---
5. Utility::encryptString( "John Smith" )
B. 1. %dw 2.0 2. output application/json 3. import modules::Utility
4. ---
5. encryptString( "John Smith" )
C. 1. %dw 2.0 2. output application/json 3. import modules.Utility 4. --- 5. encryptString( "John Smith" )
D. 1. %dw 2.0 2. output application/json 3. import modules.Utility 4. --- 5. Utility.encryptString( "John Smith" )