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

• Question 21:

  Which pattern can a web API use to notify its client of state changes as soon as they occur?

  A. HTTP Webhock

  B. Shared database trigger

  C. Schedule Event Publisher

  D. ETL data load

  Correct Answer: A

  A web API can use HTTP Webhook to notify its client of state changes as soon as they occur. A webhook is an HTTP callback that allows an API to send real-time notifications to another system or application when an event happens. The client registers a URL with the API where it wants to receive notifications, and then the API sends an HTTP request to that URL with information about the event. https://docs.mulesoft.com/connectors/webhook/webhook-connector

• Question 22:

  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

  Correct Answer: C

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

• Question 23:

  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

  Correct Answer: D

  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 Mule applications using Java Module operations. https://docs.mulesoft.com/mule-runtime.3/java- module-reference#add-the-java-module-to-your-project https://docs.mulesoft.com/muleruntime/4.3/ java-module-reference#invoke-java-code

• Question 24:

  A developer is working on a project that requires encrypting all data before sending it to a backend application. To accomplish this, the developer will use PGP encryption in the Mule 4 Cryptography module. What is required to encrypt the data before sending it to the backend application?

  A. The application needs to configure HTTPS TLS context information to encrypt the data

  B. The application needs to both the private and public keys to encrypt the data

  C. The application needs the public key from the backend service to encrypt the data

  D. The application needs the private key from the backend service to encrypt the data

  Correct Answer: C

  To encrypt the data before sending it to the backend application using PGP encryption, the application needs the public key from the backend service. PGP encryption uses a public-key cryptography system, which means that each party has a pair of keys: a public key and a private key. The public key is used to encrypt data, and the private key is used to decrypt data. Therefore, to encrypt data for a specific recipient (the backend service), the application needs to use the recipient's public key. The recipient can then use its own private key to decrypt the data. Reference: https://docs.mulesoft.com/mule-runtime.3/cryptography-pgp

• Question 25:

  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

  Correct Answer: A

  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 of the 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. https://docs.mulesoft.com/ object-store/osv2-faq#can-istore-files-in-object-store-v2

• Question 26:

  A company has been using CI/CD. Its developers use Maven to handle build and deployment activities. What is the correct sequence of activities that takes place during the Maven build and deployment?

  A. Initialize, validate, compute, test, package, verify, install, deploy

  B. Validate, initialize, compile, package, test, install, verify, verify, deploy

  C. Validate, initialize, compile, test package, verify, install, deploy

  D. Validation, initialize, compile, test, package, install verify, deploy

  Correct Answer: C

  The correct sequence of activities that takes place during the Maven build and deployment is validate, initialize, compile, test package, verify, install, deploy. These are Maven lifecycle phases that define a sequence of goals to execute during

  a build process. Each phase represents a stage in the build lifecycle and can have zero or more goals bound to it.

  Reference:

  https://maven.apache.org/guides/introduction/introduction-to-the-lifecycle.html

• Question 27:

  Refer to the exhibit.

  

  A developer generates the base scaffolding for an API in Anypoint Studio. Which HTTP status code is returned while testing using the API Kit console if no values are entered in client-secret?

  A. HTTP status code:200

  B. HTTP status code:403

  C. HTTP status code:400

  D. HTTP status code:500

  Correct Answer: B

  Based on the code snippet and schema.json file below, when testing using the API Kit console if no values are entered in client-secret, HTTP status code 403 (FORBIDDEN) is returned. This is because client-secret is defined as a required header parameter in schema.json file, which means that it must be present in every request. If no values are entered in client-secret, then it is equivalent to omitting this header parameter, which violates the schema and causes APIKit Router to return HTTP status code 403. https://docs.mulesoft.com/ apikit.x/apikit-4-headers

• Question 28:

  A Mule application deployed to a standardalone Mule runtime uses VM queues to publish messages to be consumed asynchronously by another flow. In the case of a system failure, what will happen to in-flight messages in the VM queues that have been consumed?

  A. For nay type of queue, the message will be processed after the system comes online

  B. For persistent queues, the message will be processed after the system comes online

  C. For transient queues, the message will be processed after the system comes online

  D. For any type of queue, the message will be lost

  Correct Answer: B

  In case of a system failure, in-flight messages in persistent VM queues that have been consumed will be processed after the system comes online. This is because persistent VM queues store messages on disk and guarantee delivery even if there is a system crash or restart. Therefore, any in-flight messages that have been consumed but not processed will be recovered from disk and processed when the system is back online. https://docs.mulesoft.com/mule-runtime.3/vmconnector#persistent-queues

• Question 29:

  When registering a client application with an existing API instance or API Group instance, what is required to manually approve or reject request access?

  A. To configure the SLA tier for the application and have the role of Organization Administrator, API Manager Environment Administrator, or the Manage Contacts permission

  B. To configure the SLA tier for the application and have the Exchange Administrator permission

  C. To configure the SLA tier for the application

  D. To only have Exchange Administrator permission

  Correct Answer: D

  To manually approve or reject request access when registering a client application with an existing API instance or API Group instance, it is required to configure the SLA tier for the application and have one of the following roles or

  permissions: Organization Administrator, API Manager Environment Administrator, or Manage Contracts permission. These roles or permissions allow managing client applications and contracts in API Manager.

  Reference:

  https://docs.mulesoft.com/api-manager.x/client-applications#managing-client-applications-andcontracts

• Question 30:

  Refer to the exhibit.

  

  Based on the code snippet, schema,json file, and payload below, what is the outcome of the given

  code snippet when a request is sent with the payload?

  A. The Mule flow will execute successfully with status code 200, and the response will be the JSON sent in request

  B. The Mule flow will execute successfully with status code 204

  C. The Mule flow will throw the exception "JSON:SCHEMA_NOT_HONOURED

  D. The Mule flow will execute successfully with status code 200m and a response will display the message " Age in years which must equal to or greater than zero.''

  Correct Answer: C

  Based on the code snippet, schema.json file, and payload below, the outcome of the given code snippet when a request is sent with the payload is that the Mule flow will throw the exception "JSON:SCHEMA_NOT_HONOURED'. This is because the payload does not conform to the schema.json file, which specifies that age must be a number greater than or equal to zero. The payload has age as a string with a negative value, which violates the schema. Therefore, the validate-schema operation throws an error with type "JSON:SCHEMA_NOT_HONOURED'. Reference: https://docs.mulesoft.com/json-module.1/json-validate-schema