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MuleSoft MCD-Level-1 Exam Syllabus Topics:

SectionObjectives
Mule Events and Data Transformation- Mule Event Concepts
  • 1. Use DataWeave expressions
  • 2. Event payloads and variables
Application Network Basics- C4E and application networks
  • 1. Role of Center for Enablement (C4E)
  • 2. Benefits of API-led connectivity
- Modern API concepts
  • 1. API-led connectivity principles
  • 2. API lifecycle
Using Connectors and Processing Records- Record processing
  • 1. Batch processing basics
  • 2. Handling records
- Connectors
  • 1. Database connector usage
  • 2. HTTP and REST connectors
Application Structure and Flows- Flow design
  • 1. Flow references and persistence
  • 2. Private flows and subflows
Deployment and Management- Deployment topics
  • 1. Deploying Mule applications
  • 2. Managing APIs and integrations
Routing and Error Handling- Event routing
  • 1. Scatter-Gather router
  • 2. Choice router
- Error handling
  • 1. Global error handler
  • 2. On Error Continue vs Propagate
API Design and Consumption- RAML and API Designer
  • 1. Define API resources
  • 2. Use query vs URI parameters

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MuleSoft Certified Developer - Level 1 (Mule 4) Sample Questions (Q118-Q123):

NEW QUESTION # 118
Refer to the exhibits.


A
web client submits a request to http://localhQst:8081. What is the structure of the payload at the end of the flow?

Answer: A

Explanation:
Scatter-Gather Router
The Scatter-Gather component is a routing event processor that processes a Mule event through different parallel processing routes that contain different event processors. Each route receives a reference to the Mule event and executes a sequence of one or more event processors. Each of these routes uses a separate thread to execute the event processors, and the resulting Mule event can be either the same Mule event without modifications or a new Mule event with its own payload, attributes, and variables. The Scatter-Gather component then combines the Mule events returned by each processing route into a new Mule event that is passed to the next event processor only after every route completes successfully.
The Scatter-Gather component executes each route in parallel, not sequentially. Parallel execution of routes can greatly increase the efficiency of your Mule application and may provide more information than sequential processing.
Mule Ref Doc : https://docs.mulesoft.com/mule-runtime/4.3/scatter-gather-concept


NEW QUESTION # 119
A RAML specification is defined to manage customers with a unique identifier for each customer record. What URI does MuleSoft recommend to uniquely access the customer identified with the unique ID 1234?

Answer: D

Explanation:
URI parameter (Path Param) is basically used to identify a specific resource or resources . For eg : the URL to get employee details on the basis of employeeID will be GET /employees/{employeeID} where employees is resource and {employeeID} is URI parameter. Hence option 1is the correct answer


NEW QUESTION # 120
Refer to the exhibit.

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

B)

C)

D)

Answer: A


NEW QUESTION # 121
Refer to the exhibits.


A JSON payload is set in the Set Payload transformer.
What is logged by the Logger?

Answer: B


NEW QUESTION # 122
Refer to the exhibit.


The main flow is configured with their error handlers. A web client submit a request to the HTTP Listener and the HTTP Request throws an HTTP:NOT_FOUND error.
What response message is returned?''
What response message is returned?

Answer: A

Explanation:
Correct answer is APP: API RESOURCE NOT FOUND
----------------------------------------------------------------------------------------------------------------------------------------
1) A web client submits the request to the HTTP Listener.
2) The HTTP Request throws an "HTTP:NOT_FOUND" error, execution halts.
3) The On Error Propagate error Handler handles the error. In this case ,HTTP:NOT_FOUND error is mapped to custom error APP:API_RESOURCE_NOT_FOUND. This error processor sets payload to APP:API_RESOURCE_NOT_FOUND.
4) "APP:API_RESOURCE_NOT_FOUND. " is the error message returned to the requestor in the body of the HTTP request with HTTP Status Code: 500 Reference Diagram:
Diagram Description automatically generated with medium confidence


NEW QUESTION # 123
......

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