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- Total Questions: 102
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A MuleSoft credential still carries real weight in 2026 hiring decisions, and the MCD-Level1-Delta exam is the gatekeeper. Behind 2Pass4sure's MuleSoft Certified Developer - Level 1 (Mule 4) DELTA package stands an expert team that verifies each of the 102 practice questions against what the exam currently tests.
MuleSoft MCD-Level1-Delta Exam Overview:
| Certification Vendor: | MuleSoft |
|---|---|
| Exam Name: | MuleSoft Certified Developer - Level 1 (Mule 4) DELTA |
| Exam Number: | MCD-Level1-Delta |
| Real Exam Qty: | 35 |
| Exam Price: | Approx. 250 USD |
| Exam Duration: | 75 minutes |
| Certificate Validity Period: | 2 years |
| Related Certifications: | MuleSoft Certified Developer - Level 1 (Mule 4) |
| Passing Score: | 70% |
| Available Languages: | English |
| Exam Format: | Multiple-Choice |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Proctored computer-based exam at testing centers or online proctored delivery |
| Pre Condition: | Must hold MuleSoft Certified Developer - Level 1 (Mule 4) or equivalent Mule 3 certification |
| Official Syllabus URL: | https://training.mulesoft.com/exam/mcd-level1-delta |
MuleSoft MCD-Level1-Delta Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Error Handling and Debugging | - Handling errors in flows
|
| Topic 2: Mule 4 Fundamentals | - Core Mule 4 concepts
|
| Topic 3: Data Transformation | - Using DataWeave
|
| Topic 4: API and Integration Development | - Designing and developing APIs
|
| Topic 5: Deployment and Management | - Deploy basics
|
MuleSoft MCD-Level1-Delta Exam FAQ — What Candidates Ask Most
The MCD-Level1-Delta exam is the official MuleSoft exam for MuleSoft Certified Developer - Level 1 (Mule 4) DELTA. Passing it earns you the MuleSoft Certified Developer credential, which sits at the Associate level. It is also connected to MuleSoft Certified Developer - Level 1 (Mule 4), so what you learn carries over if you plan to pursue those paths as well. Employers treat the certification as verified proof of skill, which is why structured preparation with 2Pass4sure's practice questions pays off.
The MCD-Level1-Delta exam contains 35 questions, and the time limit is 75 minutes. Translate that into a pacing plan before exam day: know roughly how long you can afford per item, flag anything that stalls you, and circle back at the end instead of burning minutes. Two or three full timed sessions in 2Pass4sure's test engine will teach you that rhythm far better than untimed reading ever will.
The passing score for the MCD-Level1-Delta exam is 70%, and the official registration fee is Approx. 250 USD. Remember that a failed attempt means paying that fee again in full for a retake, so treat self-assessment as part of the budget: run 2Pass4sure's practice questions under timed conditions and only book your seat once your scores sit comfortably above the passing bar.
Must hold MuleSoft Certified Developer - Level 1 (Mule 4) or equivalent Mule 3 certification Eligibility details can change, so before you register, confirm the current requirements on the official exam page: https://training.mulesoft.com/exam/mcd-level1-delta.
Yes. 2Pass4sure offers a free PDF demo of the MuleSoft Certified Developer - Level 1 (Mule 4) DELTA practice questions on the samples page, so you can judge the format and quality yourself before paying anything. Every purchase also includes 365 days of free updates, and after the product expires you can extend the update service at a 50% discount from within your member zone.
If you take the corresponding exam within 60 days of purchase and do not pass, 2Pass4sure backs you with a 100% money-back guarantee. To claim it, submit a scanned copy of your exam enrollment slip together with your official Score Report PDF within 2 days of the exam, and the refund is processed within 7 days. The guarantee does not apply to attempts made within the first 3 days after purchase, to products downloaded without actually sitting the exam, or to free materials and expired orders, and the candidate name must match the payer's name. If you would rather have study material than money, you can instead exchange for two additional exam products of equal value, free of charge, while keeping the update service on your original purchase. Delivery itself is instant: your download is available right after payment and a copy reaches your mailbox within one minute — if nothing arrives within 2 hours, contact customer service. You may install the product on as many computers as you need.
The official MuleSoft Certified Developer - Level 1 (Mule 4) DELTA blueprint is organized into 5 domains. The leading areas are:
- Deployment and Management
- Data Transformation
- API and Integration Development
For the complete domain-by-domain breakdown with every subtopic, see the Exam Topics outline above.
MuleSoft Certified Developer - Level 1 (Mule 4) DELTA Sample Questions:
Refer to the exhibits.

A web client submits a request to the HTTP Listener and the HTTP Request throws an error.
What payload and status code are returned to the web client?
Refer to the exhibits. A web client submits a request to the HTTP Listener and the HTTP Request throws an error.
What payload and status code are returned to the web client?
- A. Response body: "Success - Begin* Default response status code: 200
- B. Response body: "Success - End" Default response status code: 200
- C. Response body: "Error" Default response status code: 200
- D. Error response body: error, description Default error response status code: 500
A
web client submits a request to http://localhost:8081/books/0471767840. The value
"0471767840" is captured by a Set Variable transformer to a variable named booklSBN.
What is the DataWeave expression to access booklSBN later in the flow?
- A. booklSBN
- B. attributes.booklSBN
- C. flowVars.booklSBN
- D. vars. booklSBN
An On Table Row Database listener retrieves data from a table that contains record_id, an increasing numerical column.
How should the listener be configured so it retrieves new rows at most one time?
- A. Set the target to the record_id column
- B. Set the ObjectStore to store the last retrieved record_id value
- C. Set the target to store the last retrieved record_id value
- D. Set the watermark column to the record id column
A
web client submits a request to http://localhost:8081?flrstName=john. What is the correct DataWeave expression to access the firstName parameter?
- A. #[attributes.'http.query.params'.firstName]
- B. #[message.queryParams.hrstName]
- C. #[message.inboundProperties.'http.query.params'.firstName]
- D. #[attributes.queryParams.firstName]
Refer to the exhibit.
What expression correctly specifies input parameters to pass the city and state values to the SQL query?
A)
B)
C)
D)
- A. Option A
- B. Option C
- C. Option D
- D. Option B
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