Mulesoft MCD-LEVEL1 Online Practice Questions and Exam Preparation

Mulesoft MCD-LEVEL1 Online Questions & Answers

• Question 151:

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

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  Explanation/Reference:

  In this case as outbound call is made using HTTP: POST /child , all attributes will be replaced by this invocation. Hence query parameter will not be accessible at logger. Hence correct answer is option 2

• Question 152:

  According to MuleSoft, what is the Center for Enablement's role in the new IT operating model?

  A. Implements line of business projects to enforce common security requirements
  B. Creates and manages discoverable assets to be consumed by line of business developers
  C. Centrally manages partners and consultants to implement line of business projects
  D. Implements line of business projects to enforce common security requirements
  B. Creates and manages discoverable assets to be consumed by line of business developers

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  Explanation/Reference:

  Correct answer is Creates and manages discoverable assets to be consumed by line of business developers. C4E does not get directly involved in projects.

• Question 153:

  Refer to the exhibits.

  

  What is the response when a client submits a request to http://localhost:8081?

  A. After
  B. null
  C. Before
  D. Validation error
  D. Validation error

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  Explanation/Reference:

  Here's specifically what is happening here:

  1) Payload is successfully set to "Before"

  2) Is null validation is used which will pass the message only if payload is null. In this case as payload is not null, it creates an Error Object. Flow execution stops #[error.description] = "Validation error"

  3) Because no error handler is defined, the Mule default error handler handles the error

  4) "Validation error" is the error message returned to the requestor in the body of the HTTP request with HTTP Status Code: 500 Reference diagram:

  

• Question 154:

  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

• Question 155:

  Does a root element required when creating a XML response using Dataweave?

  A. Depends on requirement
  B. Not required
  C. Always required
  D. None of these
  C. Always required

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  Explanation/Reference:

  Root element is always required while creating XML response in DataWeave transformation

• Question 156:

  A flow contains an HTTP Listener as the event source. What is the DataWeave expression to log the Content-Type header using a Logger component?

  A. #["Content-Type: " ++ attributes.headers.'content-type']
  B. #["Content-Type: " + headers.'content-type']
  C. #["Content-Type: " + attributes.headers.'content-type']
  D. #["Content-Type: " ++ headers.'content-type']
  A. #["Content-Type: " ++ attributes.headers.'content-type']

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  Explanation/Reference:

  Option 1 is the only correct choice due to two reasons. 1) Concatenation is always with ++ sign and not with + sign which makes option 2 and 3 wrong 2) hearders can be accessed with attributes. headers and not with only headers which makes option 4 incorrect

• Question 157:

  Refer to the exhibit.

  

  What expression correctly specifies input parameters to pass the city and state values to the SQL query?

  

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

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  Explanation/Reference:

  MuleSoft Documentation Reference : https://docs.mulesoft.com/db- connector/1.9/database-connector-select

• Question 158:

  In an application network. If the implementation but not the interface of a product API changes, what needs to be done to the other APIs that consume the product API?

  A. The applications associated with the other APIs must be restarted
  B. The applications associated with the other APIs must be recoded
  C. The other APIs must be updated to consume the updated product API
  D. Nothing needs to be changed in the other APIs or their associated applications
  D. Nothing needs to be changed in the other APIs or their associated applications

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  Explanation/Reference:

  Correct answer is Nothing needs to be changed in the other APIs or their associated applications This is the benefit of having separate interface layer. As there are no changes to interface , no changes are required on the API's which consumes this API in context

• Question 159:

  Refer to the exhibit.

  

  What is the correct DataWeave expression for the Set Payload transformer to call the createCustomerObject flow with values for the first and last names of a new customer?

  A. lookupC createCustomerObJect( "Alice", "Green- ) )
  B. createCustomerObject( { first: "Alice", last: "Green" > )
  C. lookupf "createCustomerObject", { first: "Alice", last: "Green" > )
  D. createCustomerObject( "Alice", "Green")
  C. lookupf "createCustomerObject", { first: "Alice", last: "Green" > )

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  Explanation/Reference:

  lookup(String, Any, Number)

  This function enables you to execute a flow within a Mule app and retrieve the resulting payload.

  It works in Mule apps that are running on Mule Runtime version 4.1.4 and later. Similar to the Flow Reference component (recommended), the lookup function enables you to execute another flow within your app and to retrieve the resulting

  payload. It takes the flow's name and an input payload as parameters. For example, lookup("anotherFlow", payload) executes a flow named anotherFlow.

  Correct answer is

  lookup( "createCustomerObject", {first: "Aice, last: "Green"}) MuleSoft Documentation Reference : https://docs.mulesoft.com/mule-runtime/4.3/dw-mule-functions-lookup

• Question 160:

  A web client sends one GET request to the test flow's HTTP Listener, which causes the test flow to call the updateTemp flow After the test flow returns a response, the web client then sends a different GET request to trie getTemp flow's HTTP Listener The test flow is not called a second time.

  What response is returned from the request to the getTemp flow's HTTP Listener?

  

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