MuleSoft Developer Practice Questions
Prepare for Mule-Dev-201 with more than an answer.
- 1
Select TWO valid ways to pass parameters to a DataWeave script used in a Transform Message component. (Select TWO)
Show answer details
Correct answer: A, B
DataWeave scripts can directly access Mule variables using the
varskeyword (e.g.,vars.myVar).DataWeave can access message attributes (like HTTP headers or query params) directly via the
attributeskeyword. - 2
True or False: The
Batch Jobscope in Mule 4 automatically manages transaction boundaries for every individual record by default.Show answer details
Correct answer: B
False. Batch Jobs do not process records in a single transaction by default. Records are processed in blocks, and while you can configure transactions on batch steps, it is not the default behavior for 'every individual record'.
- 3
You are debugging a Mule application in Anypoint Studio. You have placed a breakpoint on a
Transform Messagecomponent. When the debugger pauses at this component, which of the following actions can you NOT perform?Show answer details
Correct answer: C
MuleSoft's debugger allows inspection and evaluation, but it does not support 'Hot Code Replacement' where you can edit the code structure (like adding components or changing logic) and continue execution without restarting the application.
- 4
A strategic consulting firm is designing an integration architecture for a large retail client. The goal is to decouple the backend systems (ERP, CRM) from the frontend channels (Mobile, Web) to enable faster innovation. Which layer of the API-led connectivity architecture should be focused on exposing data in a format that is specifically consumed by the mobile application, without exposing the complexity of the underlying systems?
Show answer details
Correct answer: B
The Experience API layer is designed to expose data in a way that is easily consumable by specific end-user channels (like mobile apps or web portals), insulating them from changes in the underlying Process or System APIs. System APIs access core systems, while Process APIs orchestrate data.
- 5
A developer is defining a RAML specification for a new Orders API. The API needs to retrieve a specific order based on its unique ID. Which syntax correctly defines a resource with a URI parameter for the order ID?
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Correct answer: B
In RAML, URI parameters are defined by enclosing the parameter name in curly braces, such as
/{orderId}. This denotes thatorderIdis a variable part of the URI path used to identify a specific resource. - 6
A Mule application contains a flow with a
Set Variabletransformer followed by aFlow Referenceto a Subflow. If the variable is set to 'High' in the main flow, what is the scope of this variable when the Subflow executes?Show answer details
Correct answer: D
Variables in Mule 4 are scoped to the Mule Event. Since a Subflow processes the same Mule Event as the calling flow (it runs in the same thread and context), any variables set in the calling flow are fully accessible and modifiable within the Subflow.
