Mulesoft MuleSoft Certified Architect MCIA-LEVEL-1-MAINTENANCE Questions & Answers

• Question 141:

  According to the National Institute of Standards and Technology (NIST), which cloud computing deployment model describes a composition of two or more distinct clouds that support data and application portability?

  A. Private cloud

  B. Hybrid cloud 4

  C. Public cloud

  D. Community cloud

  Correct Answer: B

• Question 142:

  An organization currently uses a multi-node Mule runtime deployment model within their datacenter, so each Mule runtime hosts several Mule applications. The organization is planning to transition to a deployment model based on Docker containers in a Kubernetes cluster. The organization has already created a standard Docker image containing a Mule runtime and all required dependencies (including a JVM), but excluding the Mule application itself.

  What is an expected outcome of this transition to container-based Mule application deployments?

  A. Required redesign of Mule applications to follow microservice architecture principles

  B. Required migration to the Docker and Kubernetes-based Anypoint Platform - Private Cloud Edition

  C. Required change to the URL endpoints used by clients to send requests to the Mule applications

  D. Guaranteed consistency of execution environments across all deployments of a Mule application

  Correct Answer: A

  *

  Organization can continue using existing load balancer even if backend application changes are there. So option A is ruled out.

  *

  As Mule runtime is within their datacenter, this model is RTF and not PCE. So option C is ruled out. Mule runtime deployment model within their datacenter, so each Mule runtime hosts several Mule applications -- This mean PCE or Hybird not RTF - Also mentioned in Question is that - Mule runtime is hosting several Mule Application, so that also rules out RTF and as for hosting multiple Application it will have Domain project which need redesign to make it microservice architecture ---------------------------------------------------------------------------------------------------------------

• Question 143:

  An API client is implemented as a Mule application that includes an HTTP Request operation using a default configuration. The HTTP Request operation invokes an external API that follows standard HTTP status code conventions, which causes the HTTP Request operation to return a 4xx status code. What is a possible cause of this status code response?

  A. An error occurred inside the external API implementation when processing the HTTP request that was received from the outbound HTTP Request operation of the Mule application

  B. The external API reported that the API implementation has moved to a different external endpoint

  C. The HTTP response cannot be interpreted by the HTTP Request operation of the Mule application after it was received from the external API

  D. The external API reported an error with the HTTP request that was received from the outbound HTTP Request operation of the Mule application

  Correct Answer: D

  Correct choice is: "The external API reported an error with the HTTP request that was received from the outbound HTTP Request operation of the Mule application" Understanding HTTP 4XX Client Error Response Codes : A 4XX Error is an error that arises in cases where there is a problem with the user's request, and not with the server. Such cases usually arise when a user's access to a webpage is restricted, the user misspells the URL, or when a webpage is nonexistent or removed from the public's view. In short, it is an error that occurs because of a mismatch between what a user is trying to access, and its availability to the user -- either because the user does not have the right to access it, or because what the user is trying to access simply does not exist. Some of the examples of 4XX errors are 400 Bad Request The server could not understand the request due to invalid syntax. 401 Unauthorized Although the HTTP standard specifies "unauthorized", semantically this response means "unauthenticated". That is, the client must authenticate itself to get the requested response. 403 Forbidden The client does not have access rights to the content; that is, it is unauthorized, so the server is refusing to give the requested resource. Unlike 401, the client's identity is known to the server. 404 Not Found The server can not find the requested resource. In the browser, this means the URL is not recognized. In an API, this can also mean that the endpoint is valid but the resource itself does not exist. Servers may also send this response instead of 403 to hide the existence of a resource from an unauthorized client. This response code is probably the most famous one due to its frequent occurrence on the web. 405 Method Not Allowed The request method is known by the server but has been disabled and cannot be used. For example, an API may forbid DELETE-ing a resource. The two mandatory methods, GET and HEAD, must never be disabled and should not return this error code. 406 Not Acceptable This response is sent when the web server, after performing server-driven content negotiation, doesn't find any content that conforms to the criteria given by the user agent. The external API reported that the API implementation has moved to a different external endpoint cannot be the correct answer as in this situation 301 Moved Permanently The URL of the requested resource has been changed permanently. The new URL is given in the response. ---In Lay man's term the scenario would be: API CLIENT --> MuleSoft API - HTTP request "Hey, API.. process this" --> External API API CLIENT

• Question 144:

  A project team is working on an API implementation using the RAML definition as a starting point. The team has updated the definition to include new operations and has published a new version to exchange. Meanwhile another team is working on a mule application consuming the same API implementation.

  During the development what has to be performed by the mule application team to take advantage of the newly added operations?

  A. Scaffold the client application with the new definition

  B. Scaffold API implementation application with the new definition

  C. Update the REST connector from exchange in the client application

  D. Update the API connector in the API implementation and publish to exchange

  Correct Answer: C

• Question 145:

  An organization has various integrations implemented as Mule applications. Some of these Mule applications are deployed to custom hosted Mule runtimes (on-premises) while others execute in the MuleSoft-hosted runtime plane (CloudHub). To perform the Integra functionality, these Mule applications connect to various backend systems, with multiple applications typically needing to access the backend systems.

  How can the organization most effectively avoid creating duplicates in each Mule application of the credentials required to access the backend systems?

  A. Create a Mule domain project that maintains the credentials as Mule domain-shared resources Deploy the Mule applications to the Mule domain, so the credentials are available to the Mule applications

  B. Store the credentials in properties files in a shared folder within the organization's data center Have the Mule applications load properties files from this shared location at startup

  C. Segregate the credentials for each backend system into environment-specific properties files Package these properties files in each Mule application, from where they are loaded at startup

  D. Configure or create a credentials service that returns the credentials for each backend system, and that is accessible from customer-hosted and MuleSoft-hosted Mule runtimes Have the Mule applications toad the properties at startup by invoking that credentials service

  Correct Answer: D

  * "Create a Mule domain project that maintains the credentials as Mule domain-shared resources" is wrong as domain project is not supported in Cloudhub * We should Avoid Creating duplicates in each Mule application but below two options cause duplication of credentials - Store the credentials in properties files in a shared folder within the organization's data center. Have the Mule applications load properties files from this shared location at startup - Segregate the credentials for each backend system into environment- specific properties files. Package these properties files in each Mule application, from where they are loaded at startup So these are also wrong choices * Credentials service is the best approach in this scenario. Mule domain projects are not supported on CloudHub. Also its is not recommended to have multiple copies of configuration values as this makes difficult to maintain Use the Mule Credentials Vault to encrypt data in a .properties file. (In the context of this document, we refer to the .properties file simply as the properties file.) The properties file in Mule stores data as key-value pairs which may contain information such as usernames, first and last names, and credit card numbers. A Mule application may access this data as it processes messages, for example, to acquire login credentials for an external Web service. However, though this sensitive, private data must be stored in a properties file for Mule to access, it must also be protected against unauthorized ?and potentially malicious ?use by anyone with access to the Mule application

• Question 146:

  An integration team follows MuleSoft's recommended approach to full lifecycle API development.

  Which activity should this team perform during the API implementation phase?

  A. Validate the API specification

  B. Use the API specification to build the MuleSoft application

  C. Design the API specification

  D. Use the API specification to monitor the MuleSoft application

  Correct Answer: B

• Question 147:

  The ABC company has an Anypoint Runtime Fabric on VMs/Bare Metal (RTF-VM) appliance installed on its own customer-hosted AWS infrastructure.

  Mule applications are deployed to this RTF-VM appliance. As part of the company standards, the Mule application logs must be forwarded to an external log management tool (LMT).

  Given the company's current setup and requirements, what is the most idiomatic (used for its intended purpose) way to send Mule application logs to the external LMT?

  A. In RTF-VM, install and configure the external LTM's log-forwarding agent

  B. In RTF-VM, edit the pod configuration to automatically install and configure an Anypoint Monitoring agent

  C. In each Mule application, configure custom Log4j settings

  D. In RTF-VM. configure the out-of-the-box external log forwarder

  Correct Answer: A

  Reference: https://help.mulesoft.com/s/article/Enable-external-log-forwarding-for-Mule-applications-deployed-in-RTF

• Question 148:

  An organization is evaluating using the CloudHub shared Load Balancer (SLB) vs creating a CloudHub dedicated load balancer (DLB). They are evaluating how this choice affects the various types of certificates used by CloudHub deployed Mule applications, including MuleSoft-provided, customer-provided, or Mule application-provided certificates. What type of restrictions exist on the types of certificates for the service that can be exposed by the CloudHub Shared Load Balancer (SLB) to external web clients over the public internet?

  A. Underlying Mule applications need to implement own certificates

  B. Only MuleSoft provided certificates can be used for server side certificate

  C. Only self signed certificates can be used

  D. All certificates which can be used in shared load balancer need to get approved by raising support ticket

  Correct Answer: B

  Correct answer is Only MuleSoft provided certificates can be used for server side certificate

  *

  The CloudHub Shared Load Balancer terminates TLS connections and uses its own server-side certificate.

  *

  You would need to use dedicated load balancer which can enable you to define SSL configurations to provide custom certificates and optionally enforce two-way SSL client authentication.

  *

  To use a dedicated load balancer in your environment, you must first create an Anypoint VPC. Because you can associate multiple environments with the same Anypoint VPC, you can use the same dedicated load balancer for your different

  environments.

  Additional Info on SLB Vs DLB:

  

• Question 149:

  Which component of Anypoint platform belongs to the platform control plane?

  A. Runtime Fabric

  B. Runtime Replica

  C. Anypoint Connectors

  D. API Manager

  Correct Answer: D

• Question 150:

  A key Cl/CD capability of any enterprise solution is a testing framework to write and run repeatable tests.

  Which component of Anypoint Platform provides the te6t automation capabilities for customers to use in their pipelines?

  A. Anypoint CLl

  B. Mule Maven Plugin

  C. Exchange Mocking Service

  D. MUnit

  Correct Answer: D