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

• Question 211:

  An organization's governance process requires project teams to get formal approval from all key stakeholders for all new Integration design specifications. An integration Mule application Is being designed that interacts with various backend systems. The Mule application will be created using Anypoint Design Center or Anypoint Studio and will then be deployed to a customer-hosted runtime.

  What key elements should be included in the integration design specification when requesting approval for this Mule application?

  A. SLAs and non-functional requirements to access the backend systems

  B. Snapshots of the Mule application's flows, including their error handling

  C. A list of current and future consumers of the Mule application and their contact details

  D. The credentials to access the backend systems and contact details for the administrator of each system

  Correct Answer: A

  SLAs and non-functional requirements to access the backend systems. Only this option actually speaks to design parameters and reqs. * Below two are technical implementations and not the part of design: - Snapshots of the Mule application's flows, including their error handling - The credentials to access the backend systems and contact details for the administrator of each system * List of consumers is not relevant to the design

• Question 212:

  An integration Mute application consumes and processes a list of rows from a CSV file. Each row must be read from the CSV file, validated, and the row data sent to a JMS queue, in the exact order as in the CSV file.

  If any processing step for a row falls, then a log entry must be written for that row, but processing of other rows must not be affected.

  What combination of Mute components is most idiomatic (used according to their intended purpose) when Implementing the above requirements?

  A. Scatter-Gather component On Error Continue scope

  B. VM connector first Successful scope On Error Propagate scope

  C. For Each scope On Error Continue scope

  D. Async scope On Error Propagate scope

  Correct Answer: C

  *

  On Error Propagate halts execution and sends error to the client. In this scenario it's mentioned that "processing of other rows must not be affected" so Option B and C are ruled out.

  *

  Scatter gather is used to club multiple responses together before processing. In this scenario, we need sequential processing. So option A is out of choice.

  *

  Correct answer is For Each scope and On Error Continue scope Below requirement can be fulfilled in the below way 1) Using For Each scope , which will send each row from csv file sequentially. each row needs to be sent sequentially as requirement is to send the message in exactly the same way as it is mentioned in the csv file 2) Also other part of requirement is if any processing step for a row fails then it should log an error but should not affect other record processing . This can be achieved using On error Continue scope on these set of activities. so that error will not halt the processing. Also logger needs to be added in error handling section so that it can be logged.

  *

  Attaching diagram for reference. Here it's try scope, but similar would be the case with For Each loop.

  

• Question 213:

  Which Anypoint Platform component should a MuleSoft developer use to create an API specification prior to building the API implementation?

  A. MUnit

  B. API Designer

  C. API Manager

  D. Runtime Manager

  Correct Answer: B

• Question 214:

  Mule applications need to be deployed to CloudHub so they can access on-premises database systems. These systems store sensitive and hence tightly protected data, so are not accessible over the internet.

  What network architecture supports this requirement?

  A. An Anypoint VPC connected to the on-premises network using an IPsec tunnel or AWS DirectConnect, plus matching firewall rules in the VPC and on-premises network

  B. Static IP addresses for the Mule applications deployed to the CloudHub Shared Worker Cloud, plus matching firewall rules and IP whitelisting in the on-premises network

  C. An Anypoint VPC with one Dedicated Load Balancer fronting each on-premises database system, plus matching IP whitelisting in the load balancer and firewall rules in the VPC and on-premises network

  D. Relocation of the database systems to a DMZ in the on-premises network, with Mule applications deployed to the CloudHub Shared Worker Cloud connecting only to the DMZ

  Correct Answer: A

  *

  "Relocation of the database systems to a DMZ in the on-premises network, with Mule applications deployed to the CloudHub Shared Worker Cloud connecting only to the DMZ" is not a feasible option

  *

  "Static IP addresses for the Mule applications deployed to the CloudHub Shared Worker Cloud, plus matching firewall rules and IP whitelisting in the on-premises network" - It is risk for sensitive data. - Even if you whitelist the database IP on your app, your app wont be able to connect to the database so this is also not a feasible option

  *

  "An Anypoint VPC with one Dedicated Load Balancer fronting each on-premises database system, plus matching IP whitelisting in the load balancer and firewall rules in the VPC and on-premises network" Adding one VPC with a DLB for each backend system also makes no sense, is way too much work. Why would you add a LB for one system.

  *

  Correct answer: "An Anypoint VPC connected to the on-premises network using an IPsec tunnel or AWS DirectConnect, plus matching firewall rules in the VPC and on-premises network" IPsec Tunnel You can use an IPsec tunnel with network-to-network configuration to connect your on-premises data centers to your Anypoint VPC. An IPsec VPN tunnel is generally the recommended solution for VPC to on-premises connectivity, as it provides a standardized, secure way to connect. This method also integrates well with existing IT infrastructure such as routers and appliances. Reference: https://docs.mulesoft.com/runtime-manager/vpc-connectivity-methods-concept

  

• Question 215:

  A mule application uses an HTTP request operation to involve an external API.

  The external API follows the HTTP specification for proper status code usage.

  What is possible cause when a 3xx status code is returned to the HTTP Request operation from the external API?

  A. The request was not accepted by the external API

  B. The request was Redirected to a different URL by the external API

  C. The request was NOT RECEIVED by the external API

  D. The request was ACCEPTED by the external API

  Correct Answer: B

  3xx HTTP status codes indicate a redirection that the user agent (a web browser or a crawler) needs to take further action when trying to access a particular resource. Reference: https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html

• Question 216:

  An IT integration delivery team begins a project by gathering all of the requirements, and proceeds to execute the remaining project activities as sequential, non-repeating phases. Which IT project delivery methodology is this team following?

  A. Kanban

  B. Scrum

  C. Waterfall

  D. Agile

  Correct Answer: C

• Question 217:

  An organization is designing a Mule application to periodically poll an SFTP location for new files containing sales order records and then process those sales orders. Each sales order must be processed exactly once.

  To support this requirement, the Mule application must identify and filter duplicate sales orders on the basis of a unique ID contained in each sales order record and then only send the new sales orders to the downstream system.

  What is the most idiomatic (used for its intended purpose) Anypoint connector, validator, or scope that can be configured in the Mule application to filter duplicate sales orders on the basis of the unique ID field contained in each sales order

  record?

  A. Configure a Cache scope to filter and store each record from the received file by the order ID

  B. Configure a Database connector to filter and store each record by the order ID

  C. Configure an Idempotent Message Validator component to filter each record by the order ID

  D. Configure a watermark In an On New or Updated File event source to filter unique records by the order ID

  Correct Answer: C

  Reference: https://docs.mulesoft.com/mule-runtime/3.9/idempotent-filter

• Question 218:

  Customer has deployed mule applications to different customer hosted mule run times. Mule applications are managed from Anypoint platform.

  What needs to be configured to monitor these Mule applications from Anypoint monitoring and what sends monitoring data to Anypoint monitoring?

  A. Enable monitoring of individual applications from runtime manager application settings Runtime manager agent sends monitoring data from the mule applications to Anypoint monitoring

  B. Install runtime manager agent on each mule runtime Runtime manager agent since monitoring data from the mule applications to Anypoint monitoring

  C. Anypoint monitoring agent on each mule runtime Anypoint monitoring agent sends monitoring data from the mule applications to Anypoint monitoring

  D. By default, Anypoint monitoring agent will be installed on each Mule run time Anypoint Monitoring agent automatically sends monitoring data from the Mule applications to Anypoint monitoring

  Correct Answer: C

• Question 219:

  Refer to the exhibit.

  

  An organization deploys multiple Mule applications to the same customer -hosted Mule runtime. Many of these Mule applications must expose an HTTPS endpoint on the same port using a server-side certificate that rotates often.

  What is the most effective way to package the HTTP Listener and package or store the server-side certificate when deploying these Mule applications, so the disruption caused by certificate rotation is minimized?

  A. Package the HTTPS Listener configuration in a Mule DOMAIN project, referencing it from all Mule applications that need to expose an HTTPS endpoint Package the server- side certificate in ALL Mule APPLICATIONS that need to expose an HTTPS endpoint

  B. Package the HTTPS Listener configuration in a Mule DOMAIN project, referencing it from all Mule applications that need to expose an HTTPS endpoint. Store the server-side certificate in a shared filesystem location in the Mule runtime's classpath, OUTSIDE the Mule DOMAIN or any Mule APPLICATION

  C. Package an HTTPS Listener configuration In all Mule APPLICATIONS that need to expose an HTTPS endpoint Package the server-side certificate in a NEW Mule DOMAIN project

  D. Package the HTTPS Listener configuration in a Mule DOMAIN project, referencing It from all Mule applications that need to expose an HTTPS endpoint. Package the server- side certificate in the SAME Mule DOMAIN project Go to Set

  Correct Answer: B

  In this scenario, both A and C will work, but A is better as it does not require repackage to the domain project at all.

  Correct answer is Package the HTTPS Listener configuration in a Mule DOMAIN project, referencing it from all Mule applications that need to expose an HTTPS endpoint. Store the server-side certificate in a shared filesystem location in the

  Mule runtime's classpath, OUTSIDE the Mule DOMAIN or any Mule APPLICATION.

  What is Mule Domain Project?

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  A Mule Domain Project is implemented to configure the resources that are shared among different projects. These resources can be used by all the projects associated with this domain. Mule applications can be associated with only one domain, but a domain can be associated with multiple projects. Shared resources allow multiple development teams to work in parallel using the same set of reusable connectors. Defining these connectors as shared resources at the domain level allows the team to: - Expose multiple services within the domain through the same port. - Share the connection to persistent storage. - Share services between apps through a well-defined interface. - Ensure consistency between apps upon any changes because the configuration is only set in one place.

  *

  Use domains Project to share the same host and port among multiple projects. You can declare the http connector within a domain project and associate the domain project with other projects. Doing this also allows to control thread settings, keystore configurations, time outs for all the requests made within multiple applications. You may think that one can also achieve this by duplicating the http connector configuration across all the applications. But, doing this may pose a nightmare if you have to make a change and redeploy all the applications.

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  If you use connector configuration in the domain and let all the applications use the new domain instead of a default domain, you will maintain only one copy of the http connector configuration. Any changes will require only the domain to the redeployed instead of all the applications. You can start using domains in only three steps: 1) Create a Mule Domain project 2) Create the global connector configurations which needs to be shared across the applications inside the Mule Domain project 3) Modify the value of domain in mule-deploy.properties file of the applications

  

  Use a certificate defined in already deployed Mule domain Configure the certificate in the domain so that the API proxy HTTPS Listener references it, and then deploy the secure API proxy to the target Runtime Fabric, or on-premises target. (CloudHub is not supported with this approach because it does not support Mule domains.)

• Question 220:

  What Mule application can have API policies applied by Anypoint Platform to the endpoint exposed by that Mule application?

  A. A Mule application that accepts requests over HTTP/1x

  B. A Mule application that accepts JSON requests over TCP but is NOT required to provide a response.

  C. A Mule application that accepts JSON requests over WebSocket

  D. A Mule application that accepts gRPC requests over HTTP/2

  Correct Answer: A

  *

  HTTP/1.1 keeps all requests and responses in plain text format.

  *

  HTTP/2 uses the binary framing layer to encapsulate all messages in binary format, while still maintaining HTTP semantics, such as verbs, methods, and headers. It came into use in 2015, and offers several methods to decrease latency, especially when dealing with mobile platforms and server-intensive graphics and videos

  *

  Currently, Mule application can have API policies only for Mule application that accepts requests over HTTP/1x