Mulesoft MCD-Level-1 Exam Questions

229 Questions


Updation Date : 21-Jan-2026



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Refer to the exhibits.


The Mule application does NOT define any global error handlers. The Validation component in the private flow throws an error. What response message is returned to a web client request to the main flow's HTTP Listener?


A. Child error


B. Parent error


C. Validation Error


D. Parent completed





C.
  Validation Error

Which of the below is not a valid category for connector type?


A. Gold


B. Select


C. Premium


D. Community





A.
  Gold

Gold is not valid category for connector types.

Refer to theexhibits.

A Mule application has an HTTP Request that is configured with hardcoded values. To
change this, the Mule application is configured to use a properties file named config.yaml.
what valid expression can the HTTP Request host value be set to so that it is no longer
hardcoded?


A.

${training.host}


B.

${training:host}


C.

#[training:host]


D.

#[training.host]





A.
  

${training.host}



Refer to the exhibits.

In the choice router, the When expression for the domestic shipping route is set to "#[payload= "FR"]". What is the output of logger after the execution of choice router is completed?



A. "Domestic"


B. "International"


C. "US"


D. A dataweave syntax error





D.
  A dataweave syntax error

To compare, DataWeave syntax is #[payload == "FR"]. In this case only one = is used so it will give syntax error.

Which keyword do you use to create a new function in DataWeave?


A. function


B. fun


C. func


D. map





B.
  fun

Explanation:
You can define your own DataWeave functions using the fun declaration in the header of a DataWeave script. Sample is as below. ----------------------------------------
%dw 2.0
output application/json
fun toUpper(aString) = upper(aString)
---
toUpper("hello")
MuleSoft Doc Ref : https://docs.mulesoft.com/mule-runtime/4.1/dataweave-functions

What DataWeave expression transforms the array a to the XML output?


A. 1.1. trains:
2.2. {(
3.3. a map ((engId, index) ->
4.4. train: {
5.5. TrainNumber: engId
6.6.
7.7. }
8.8. )
9.9. )}


B. 1.1. trains:
2.2. a map ((engId, index) ->
3.3. train: {
4.4. TrainNumber: engId
5.5.
6.6. }
7.7. )


C. 1.1. {(
2.2. trains:
3.3. a map ((engId, index) ->
4.4. train: {
5.5. TrainNumber: engId
6.6.
7.7. }
8.8. )
9.)}


D. 1.1. {
2.2. trains:
3.3. a map ((engId, index) ->
4.4. train: {
5.5. TrainNumber: engId
6.6.
7.7. }
8.8. )
9.}





A.
  1.1. trains:
2.2. {(
3.3. a map ((engId, index) ->
4.4. train: {
5.5. TrainNumber: engId
6.6.
7.7. }
8.8. )
9.9. )}


Explanation:
For such questions always look for Syntax:
I call it "Wrap the Map" trains:
{(
When mapping array elements (JSON or JAVA) to XML, wrap the map operations in {(..)}
-{ } are defining the object
-( ) are transforming each element in the array as a key/value pair

A Mule project contains a DataWeave module called MyModule.dwl that defines a function named formatString. The module is located in the project's src/main/resources/modules folder. What is the correct way in DataWeave code to import MyModule using a wildcard and then call the module's formatString function?


A. Option A


B. Option B


C. Option C


D. Option D





D.
  Option D

What is the correct syntax todefine and call a function in Database? 



A.

Option A


B.

Option B


C.

Option C


D.

Option D





A.
  

Option A




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