Salesforce Salesforce Certifications SALESFORCE-MULESOFT-DEVELOPER-II Questions & Answers

• Question 41:

  Which statement is true when working with correlation IDS?

  A. The HTTP Listener regenerates correlation IDs regardless of the HTTP request

  B. The Anypoint MQ Connector automatically propagates correlation IDS

  C. The HTTP Listener generates correlation IDS unless a correlation ID is received in the HTTP request

  D. The VM Connector does not automatically propagate correction IDs

  Correct Answer: C

  When working with correlation IDs, the HTTP Listener generates correlation IDs unless a correlation ID is received in the HTTP request. In that case, it propagates the received correlation ID throughout the flow execution. Correlation IDs are used to track events across different flows or applications. https://docs.mulesoft.com/mule-runtime.3/about-mule-message#message-attributes

• Question 42:

  Refer to the exhibit.

  

  A Mute Object Store is configured with an entry TTL of one second and an expiration interval of 30 seconds. What is the result of the flow if processing between os'store and os:retrieve takes 10 seconds?

  A. nullPayload

  B. originalPayload

  C. OS:KEY_NOT_FOUND

  D. testPayload

  Correct Answer: A

  The result of the flow is nullPayload if processing between os:store and os:retrieve takes 10 seconds. This is because the entry TTL of the object store is one second, which means that any stored value expires after one second and is removed from the object store. The expiration interval of 30 seconds only determines how often the object store checks for expired values, but it does not affect the TTL. Therefore, when os:retrieve tries to get the value after 10 seconds, it returns nullPayload because the value has already expired and been removed. https://docs.mulesoft.com/objectstore/ osv2-faq#how-does-the-time-to-live-work

• Question 43:

  Which plugin or dependency is required to unit test modules created with XML SDK?

  A. XMLUnit

  B. Junit

  C. MUnit Extensions Maven plugin

  D. MUnit Maven plugin

  Correct Answer: C

  To unit test modules created with XML SDK, the developer needs to use the MUnit Extensions Maven plugin. This plugin allows testing XML SDK modules using MUnit by adding a dependency to the module under test and using a custom

  processor tag to invoke it.

  Reference:

  https://docs.mulesoft.com/mule-sdk.1/xml-sdk#testing

• Question 44:

  A Mule application need to invoice an API hosted by an external system to initiate a process. The external API takes anywhere between one minute and 24 hours to compute its process. Which implementation should be used to get response data from the external API after it completes processing?

  A. Use an HTTP Connector to invoke the API and wait for a response

  B. Use a Scheduler to check for a response every minute

  C. Use an HTTP Connector inside Async scope to invoice the API and wait for a response

  D. Expose an HTTP callback API in Mule and register it with the external system

  Correct Answer: D

  To get response data from the external API after it completes processing, the developer should expose an HTTP callback API in Mule and register it with the external system. This way, the external API can invoke the callback API with the

  response data when it is ready, instead of making the Mule application wait for a long time or poll for a response repeatedly.

  Reference:

  https://docs.mulesoft.com/mule-runtime.3/http-listener-ref#callback

• Question 45:

  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 execute successfully?

  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

  Correct Answer: B

  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. https://docs.mulesoft.com/munit.3/munit-testflow

• Question 46:

  A Mule application defines as SSL/TLS keystore properly "tis,keystore.keyPassword'' as secure. How can this property be referenced to access its value within the application?

  A. #{secure::tiskeystore,keyPassowrd}

  B. ${secure::tiskeystore,keyPassowrd}

  C. ${secure::tiskeystore,keyPassowrd}

  D. p{secure::tiskeystore,keyPassowrd}

  Correct Answer: B

  secure::tiskeystore,keyPassowrd ShortExplanationofCorrectAnswerOnly:Toreferenceasecureproper tyvaluewithintheapplication,thedeveloperneedstousethesyntax{secure::}. In this case, the property name is tiskeystore,keyPassword, so the correct syntax is ${secure::tiskeystore,keyPassowrd}. https:// docs.mulesoft.com/mule-runtime.3/secure-configurationproperties#referencing-secure-properties

• Question 47:

  The HTTP Request operation raises an HTTP CONNECTIVITY error.

  Which HTTP status code and body are returned to the web client?

  A. HTTP Status Code:200. Body "Error in processing your request

  B. HTTP Status Code:500. Body "The HTTP CONNECTIVITY Error description

  C. HTTP Status Code:500. Body "Error in processing your request

  D. HTTP Status Code:500. Body "Error in processing your request

  Correct Answer: C

  When the HTTP Request operation raises an HTTP CONNECTIVITY error, it triggers an on-errorcontinue handler that sets a payload with "Error in processing your request'. Since no status code is explicitly set in this handler, it defaults to 500 (INTERNAL SERVER ERROR). Therefore, the web client receives an HTTP response with status code 500 and body "Error in processing your request'. https://docs.mulesoft.com/mule- runtime.3/error-handling#on-error-continue

• Question 48:

  A system API that communicates to an underlying MySQL database is deploying to CloudHub. The DevOps team requires a readiness endpoint to monitor all system APIs. Which strategy should be used to implement this endpoint?

  A. Create a dedicated endpoint that responds with the API status and reachability of the underlying systems

  B. Create a dedicated endpoint that responds with the API status and health of the server

  C. Use an existing resource endpoint of the API

  D. Create a dedicated endpoint that responds with the API status only

  Correct Answer: A

  To implement a readiness endpoint to monitor all system APIs, the developer should create a dedicated endpoint that responds with the API status and reachability of the underlying systems. This way, the DevOps team can check if the system API is ready to receive requests and if it can communicate with its backend systems without errors. https://docs.mulesoft.com/muleruntime/4.3/deployment-strategies#readiness-probes

• Question 49:

  Refer to the exhibit.

  

  What action must be performed to log all the errors raised by the VM Connector?

  A. Add inside the Logger tag

  B. Add inside the Appenders tag

  C. Configure inside the VM Connector configuration

  D. Nothing, as error-level events are automatically logged

  Correct Answer: B

  To log all the errors raised by the VM Connector, the developer needs to add an async logger with the name "org.mule.extension.vm' and the level "ERROR' inside the appenders tag of the log4j2.xml file. This will enable logging all error-level events generated by the VM Connector to the console appender. https://docs.mulesoft.com/mule-runtime.3/logging-in-mule#configuringcustom-logging-settings

• Question 50:

  A developer deploys an API to CloudHub and applies an OAuth policy on API Manager. During testing, the API response is slow, so the developer reconfigures the API so that the out-of-the-box HTTP Caching policy is applied first, and the

  OAuth API policy is applied second.

  What will happen when an HTTP request is received?

  A. In case of a cache hit, both the OAuth and HTTP Caching policies are evaluated; then the cached response is returned to the caller

  B. In case of a cache it, only the HTTP Caching policy is evaluating; then the cached response is returned to the caller

  C. In case of a cache miss, only the HTTP Caching policy is evaluated; then the API retrieves the data from the API implementation, and the policy stores the data to be cached in Object Store

  D. In case of a cache miss, both the OAuth and HTTP Caching policies are evaluated; then the API retrieves the data from the API implementation, and the policy does not store the data in Object Store

  Correct Answer: B

  When an HTTP request is received and the HTTP Caching policy is applied first, it checks if there is a cached response for that request in Object Store. If there is a cache hit, meaning that a valid cached response exists, then only the HTTP Caching policy is evaluated and the cached response is returned to the caller without invoking the OAuth policy or the API implementation. If there is a cache miss, meaning that no valid cached response exists, then both the HTTP Caching policy and the OAuth policy are evaluated before invoking the API implementation. Reference: https://docs.mulesoft.com/api-manager.x/http-caching-policy#policy-ordering