MuleSoft Certified Developer - Level 1 (Mule 4) DELTA - MCD-Level1-Delta Exam Questions [2026]

QUESTION NO: 1
Refer to the exhibits. The main flow contains an HTTP Request in the middle of the flow. The HTTP Listeners and HTTP Request use default configurations.
A web client submits a request to the main flow's HTTP Listener that includes query parameters for the pedigree of the piano.
What values are accessible to the Logger component at the end of the main flow?

A. payload B. payload
pedigree query params C. payload
pedigree query params producer var D. payload
producer var

Correct Answer: D

QUESTION NO: 2
Why would a Mule application use the ${http.port} property placeholder for its HTTP Listener port when it is deployed to CloudHub?

A. Allows clients to VPN directly to the application at the Mule application's configured HTTP port B. Allows CloudHub to automatically change the HTTP port to allow external clients to connect to the HTTP Listener C. Allows MuleSoft Support to troubleshoot the application by connecting directly to the HTTP Listener D. Allows CloudHub to automatically register the application with API Manager

Correct Answer: B

QUESTION NO: 3
Refer to the exhibits.

The Set Payload transformer In the addltem subflow uses DataWeave to create an order object.
What is the correct DataWeave code for the Set Payload transformer in the createOrder flow to use the addltem subflow to add a router cable with the price of 100 to the order?

A. addltemf { payload: { price: "100", item: "router", itemType: "cable" } > ) B. lookupf "addltem", { payload: { price: "100", item: "router", itemType: "cable" } } ) C. addltemf { price: "100", item: "router", itemType: "cable" }) D. lookupf "addltem", { price: "100", item: "router", itemType: "cable" } )

Correct Answer: B

QUESTION NO: 4
A
web client submits a request to http://localhost:8081?flrstName=john. What is the correct DataWeave expression to access the firstName parameter?

A. #[message.queryParams.hrstName] B. #[message.inboundProperties.'http.query.params'.firstName] C. #[attributes.'http.query.params'.firstName] D. #[attributes.queryParams.firstName]

Correct Answer: D

QUESTION NO: 5
Refer to the exhibit.

What Database expression transforms the input to the output?
A)

B)

C)

D)

A. Option A B. Option C C. Option D D. Option B

Correct Answer: D

QUESTION NO: 6
Refer
to the exhibits. A web client submits a request to http://localhost:8081/fliqhts?destination=SFO and the Web Service Consumer throws a WSC:BAD_REQUEST error.
What is the next step to fix this error?

A. set a SOAP payload before the Consume operation that contains the destination query parameter B. set a property m the Consume operation equal to the destination query parameter C. Set a header In the Consume operation equal to the destination query parameter D. set a JSON payload before the Consume operation that contains the destination query parameter

Correct Answer: A

QUESTION NO: 7
Refer to the exhibit.

The API needs to be updated using the company-wide standard for the Plan data type. The Object data type has already been published in Anypoint Exchange with the global reference .
ACME/DataTypes/PlanDataType.raml.
What is a valid RAML specification that reuses the Plan data type?
A)