Mulesoft MCD-LEVEL2 Online Practice Questions and Exam Preparation

Mulesoft MCD-LEVEL2 Online Questions & Answers

• Question 41:

  Which configurations are required for HTTP Listener to enable mTLS authentication?

  A. Set an appropriate reconnection strategy and use persistent connections for the listener
  B. Set an appropriate keystore configuration and use persistent connections for the listener
  C. Set an appropriate keystore and truststoreconfiguration for the listener
  D. Set an appropriate truststore configuration and reconnection strategy for the listener
  C. Set an appropriate keystore and truststoreconfiguration for the listener

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  Explanation

  To enable mTLS authentication for HTTP Listener, the developer needs to set an appropriate keystore and truststore configuration for the listener. The keystore contains the certificate and private key of the Mule application that are used to prove its identity to clients. The truststore contains the certificates of trusted clients that are allowed to access the Mule application.

  References:https://docs.mulesoft.com/mule-runtime/4.3/tls-configuration#mutual-authentication

• Question 42:

  Which statement is true when using XML SDK for creating custom message processors?

  A. Properties are fields defined by an end user of the XML SDK component and serve as a global configuration for the entire Mule project in which they are used
  B. An XML SDK provides both inbound and outbound operations
  C. Operations can be reused in recursive calls
  D. All operations are public
  D. All operations are public

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  Explanation

  When using XML SDK for creating custom message processors, all operations are public by default and can be used by any Mule application that imports them. There is no way to make an operation private or protected in XML SDK.

  References:https://docs.mulesoft.com/mule-sdk/1.1/xml-sdk#operations

• Question 43:

  Which type of cache invalidation does the Cache scope support without having to write any additional code?

  A. Write-through invalidation
  B. White-behind invalidation
  C. Time to live
  D. Notification-based invalidation
  C. Time to live

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  Explanation

  The Cache scope supports time to live (TTL) as a cache invalidation strategy without having to write any additional code. TTL specifies how long the cached response is valid before it expires and needs to be refreshed. The Cache scope also supports custom invalidation strategies using MEL or DataWeave expressions.

  References:https://docs.mulesoft.com/mule-runtime/4.3/cache-scope#cache_invalidation

• Question 44:

  When implementing a synchronous API where the event source is an HTTP Listener, a developer needs to return the same correlation ID back to the caller in the HTTP response header.

  How can this be achieved?

  A. Enable the auto-generate CorrelationID option when scaffolding the flow
  B. Enable the CorrelationID checkbox in the HTTP Listener configuration
  C. Configure a custom correlation policy
  D. NO action is needed as the correlation ID is returned to the caller in the response header by default
  D. NO action is needed as the correlation ID is returned to the caller in the response header by default

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  Explanation

  When implementing a synchronous API where the event source is an HTTP Listener, Mule automatically propagates some message attributes between flows via outbound and inbound properties. One of these attributes is correlation ID,

  which is returned to the caller in the response header by default as MULE_CORRELATION_ID.

  References: https://docs.mulesoft.com/mule-runtime/4.3/about-mule-message#message-attributes

• Question 45:

  Refer to the exhibit.

  

  What is the result of the Mule Maven Plugin configuration of the value of property its,keystorePassoword in CloudHub 2.0?

  A. CloudHub encrypts the value
  B. The Mule server encrypts the value
  C. Anypoint Studio secures the value
  D. Runtime Manager masks the value
  D. Runtime Manager masks the value

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  Explanation

  The result of the Mule Maven Plugin configuration of the value of property its,keystorePassword in CloudHub 2.0 is that Runtime Manager masks the value. This means that Runtime Manager hides or obscures the value from anyone who views it in Runtime Manager or Anypoint Platform.

  References:https://docs.mulesoft.com/runtime-manager/runtime-manager-agent-for-mule4#properties-tab

• Question 46:

  Which properties are mandatory on the HTTP Connector configuration in order to use the OAuth 2.0 Authorization Code grant type for authentication?

  A. External callback URL, access token URL,client ID response access token
  B. Token URL, authorization URL, client ID, client secret local callback URL
  C. External callback URL, access token URL, client ID, response refresh token
  D. External callback URL, access token URL, local authorization URL, authorization URL, client ID, client secret
  B. Token URL, authorization URL, client ID, client secret local callback URL

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  Explanation

  To use the OAuth 2.0 Authorization Code grant type for authentication, the HTTP Connector configuration requires the following properties: token URL, authorization URL, client ID, client secret, and local callback URL. The token URL is the endpoint of the authorization server that provides access tokens. The authorization URL is the endpoint of the authorization server that initiates the user consent flow. The client ID and client secret are the credentials of the Mule application registered with the authorization server. The local callback URL is the endpoint of the Mule application that receives the authorization code from the authorization server.

  References:https://docs.mulesoft.com/http-connector/1.6/http-authentication#oauth-2-0

• Question 47:

  In a Mule project, Flow-1 contains a flow-ref to Flow-2 depends on data from Flow-1 to execute successfully.

  Which action ensures the test suites and test cases written for Flow-1 and Flow-2 will executesuccessfully?

  A. Chain together the test suites and test cases for Flow-1 and Flow-2
  B. Use `'Set Event to pass the input that is needed, and keep the test cases for Flow-1 and Flow-2 independent
  C. Use `'Before Test Case'' To collect data from Flow-1 test cases before running Flow-2 test cases
  D. Use `After Test Case' to produce the data needed from Flow-1 test cases to pass to Flow-2 test cases
  B. Use `'Set Event to pass the input that is needed, and keep the test cases for Flow-1 and Flow-2 independent

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  Explanation

  To ensure the test suites and test cases written for Flow-1 and Flow-2 will execute successfully, the developer should use a Set Event processor to pass the input that is needed by Flow-2, and keep the test cases for Flow-1 and Flow-2 independent. This way, the developer can isolate the testing of each flow and avoid coupling them together.

  References:https://docs.mulesoft.com/munit/2.3/munit-test-flow

• Question 48:

  A heathcare customer wants to use hospital system data, which includes code that was developed using legacy tools and methods. The customer has created reusable Java libraries in order to read the data from the system.

  What is the most effective way to develop an API retrieve the data from the hospital system?

  A. Refer to JAR files in the code
  B. Include the libraries writes deploying the code into the runtime
  C. Create the Java code in your project and invoice the data from the code
  D. Install libraries in a local repository and refer to it in the pm.xml file
  D. Install libraries in a local repository and refer to it in the pm.xml file

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  Explanation

  To develop an API that retrieves data from a hospital system using reusable Java libraries, the developer should install libraries in a local repository and refer to it in the pom.xml file. This way, the developer can use Maven to manage dependencies and invoke Java code from Muleapplications using Java Module operations.

  References: https://docs.mulesoft.com/mule-runtime/4.3/java-module-reference#add-the-java-module-to-your-projecthttps://docs.mulesoft.com/mule-runtime/4.3/java-module-reference#invoke-java-code

• Question 49:

  A Mule application deployed to multiple Cloudhub 2.0 replicas needs to temporarily persist large files over 10MB between flow executions, and routinely needs to query whether the file data exists on separate executions.

  How can this be achieved?

  A. Store the contents of the file on separate storage, and store the key and location of the file Object using Object Store v2
  B. Use an in-memory Object Store
  C. Store the key and full contents of the file in an Object Store
  D. Store the key and full contents of the file, caching the filename and location between requests
  A. Store the contents of the file on separate storage, and store the key and location of the file Object using Object Store v2

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  Explanation

  To temporarily persist large files over 10MB between flow executions, and routinely query whether the file data exists on separate executions, the developer should store the contents ofthe file on separate storage, and store the key and

  location of the file object using Object Store v2. This way, the developer can avoid storing large files in memory or exceeding the size limit of Object Store v2 (10MB per object). The developer can also use Object Store v2 operations to query,

  retrieve, or delete the file object by its key.

  References:https://docs.mulesoft.com/object-store/osv2-faq#can-i-store-files-in-object-store-v2

• Question 50:

  Refer to the exhibit.

  

  When creating a new project, which API implementation allows for selecting the correct API version and scaffolding the flows from the API specification?

  A. Import a published API
  B. Generate a local RAML from anypoint Studio
  C. Download RAML from Design Center'
  D. Import RAML from local file
  A. Import a published API

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  Explanation

  To create a new project that selects the correct API version and scaffolds the flows from the API specification, the developer should import a published API. This option allows importing an API specification that has been published to Anypoint Exchange or Design Center, and selecting a specific version of that API specification. The developer can also choose to scaffold flows based on that API specification.

  References:https://docs.mulesoft.com/apikit/4.x/apikit-4-new-project-task