MCIA-Level-1 practice questions 61–70

1. Question 61 · 101 in bank

   A Mule application is synchronizing customer data between two different database systems. What is the main benefit of using XA transactions over local transactions to synchronize these two database systems?

   • AEnsures consistency
   • BReduces latency
   • CSimplifies communication
   • DIncreases throughput

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   Answer: A

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2. Question 62 · 101 in bank

   Refer to the exhibit. This Mule application is deployed to multiple CloudHub workers with persistent queues enabled. The retrieveFile flow's event source reads a CSV file from a remote SFTP server and then publishes each record in the CSV file to a VM queue. The processCustomerRecords flow's VM Listener receives messages from the same VM queue and then processes each message separately. How are messages routed to the CloudHub workers as messages are received by the VM Listener?

   

   • AEach message is routed to the SAME CloudHub worker that retrieved the file, thereby BINDING ALL messages to ONLY that ONE CloudHub worker
   • BEach message is duplicated to ALL of the CloudHub workers, thereby SHARING EACH message with ALL the CloudHub workers
   • CEach message is routed to ONE of the available CloudHub workers in a NON-DETERMINISTIC non-round-robin fashion, thereby APPROXIMATELY BALANCING messages among the CloudHub workers
   • DEach message is routed to ONE of the CloudHub workers in a DETERMINISTIC round-robin fashion, thereby EXACTLY BALANCING messages among the CloudHub workers

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   Answer: C

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3. Question 63 · 101 in bank

   A Mule application is being designed to perform product orchestration. The Mule application needs to join together the responses from an Inventory API and a Product Sales History API with the least latency. To minimize the overall latency, what is the most idiomatic (used for its intended purpose) design to call each API request in the Mule application?

   • ACall each API request in a separate route of a Scatter-Gather
   • BCall each API request in a separate Async scope
   • CCall each API request in a separate route of a Parallel For Each scope
   • DCall each API request in a separate lookup call from a DataWeave reduce operator

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   Answer: A

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4. Question 64 · 101 in bank

   An organization will deploy Mule applications to CloudHub. Business requirements mandate that all application logs be stored ONLY in an external Splunk consolidated logging service and NOT in CloudHub. In order to most easily store Mule application logs ONLY in Splunk, how must Mule application logging be configured in Runtime Manager, and where should the log4j2 Splunk appender be defined?

   • ADisable CloudHub logging in Runtime Manager Define the Splunk appender in ONE global log4j2.xml file that is uploaded once to Runtime Manager to support all Mule application deployments
   • BKeep the default logging configuration in Runtime Manager Define the Splunk appender in ONE global log4j2.xml file that is uploaded once to Runtime Manager to support all Mule application deployments
   • CDisable CloudHub logging in Runtime Manager Define the Splunk appender in EACH Mule application's log4j2.xml file
   • DKeep the default logging configuration in Runtime Manager Define the Splunk appender in EACH Mule application's log4j2.xml file

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   Answer: C

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5. Question 65 · 101 in bank

   An organization uses a four (4) node customer-hosted Mule runtime cluster to host one (1) stateless API implementation. The API is accessed over HTTPS through a load balancer that uses round-robin for load distribution. Each node in the cluster has been sized to be able to accept four (4) times the current number of requests. Two (2) nodes in the cluster experience a power outage and are no longer available. The load balancer detects the outage and blocks the two unavailable nodes from receiving further HTTP requests. What performance-related consequence is guaranteed to happen, on average, assuming the remaining cluster nodes are fully operational?

   • A100% increase in the number of requests received by each remaining node
   • B100% increase in the average response time of the API
   • C50% reduction in the throughput of the API
   • D50% increase in the JVM heap memory consumed by each remaining node

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   Answer: A

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6. Question 66 · 101 in bank

   A Mule application is deployed to a single CloudHub worker and the public URL appears in Runtime Manager as the App url. Requests are sent by external web clients over the public Internet to the Mule application's App url. Each of these requests is routed to the HTTPS Listener event source of the running Mule application. Later, the DevOps team edits some properties of this running Mule application in Runtime Manager. Immediately after the new property values are applied in Runtime Manager, how is the current Mule application deployment affected, and how will future web client requests to the Mule application be handled?

   • ACloudHub will redeploy the Mule application to the OLD CloudHub worker New web client requests are ROUTED to the OLD CloudHub worker BOTH before and after the Mule application is redeployed
   • BCloudHub will redeploy the Mule application to the OLD CloudHub worker New web client requests will RETURN AN ERROR until the Mule application is redeployed to the OLD CloudHub worker
   • CCloudHub will redeploy the Mule application to a NEW CloudHub worker New web client requests will RETURN AN ERROR until the NEW CloudHub worker is available
   • DCloudHub will redeploy the Mule application to a NEW CloudHub worker New web client requests are ROUTED to the OLD CloudHub worker until the NEW CloudHub worker is available

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   Answer: D

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7. Question 67 · 101 in bank

   A Mule application named Inventory uses a persistent object store. The Inventory Mule application is deployed to CloudHub and is configured to use Object Store v2. Another Mule application named Roomba is being developed to delete values from the Inventory Mule application's persistent object store. The Roomba Mule application will also be deployed to CloudHub. What is the most direct way for the Roomba Mule application to delete values from the Inventory Mule application's persistent object store with the least latency?

   • AUse the Object Store v2 REST API configured to access the Inventory Mule application's persistent object store
   • BUse a VM connector configured to directly access the persistent queue of the Inventory Mule application's persistent object store
   • CUse an Object Store connector configured to access the Inventory Mule application's persistent object store
   • DUse an Anypoint MQ connector configured to directly access the Inventory Mule application's persistent object store

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   Answer: D

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8. Question 68 · 101 in bank

   An organization has decided on a cloud migration strategy that aims to minimize the organization's own IT resources. Currently, the organization has all of its Mule applications running on its own premises and uses an on-premises load balancer that exposes all APIs under the base URL https://api.acme.com. As part of the migration strategy, the organization plans to migrate all of its Mule applications and load balancer to CloudHub. What is the most straight-forward and cost-effective approach to Mule application deployment and load balancing that preserves the public URLs?

   • ADeploy the Mule applications to CloudHub Update the CNAME record for api.acme.com in the organization's DNS server pointing to the A record of the CloudHub Shared Load Balancer (SLB) Apply mapping rules in the SLB to map URLs to their corresponding Mule applications
   • BDeploy the Mule applications to CloudHub Create a CNAME record for api.acme.com in the CloudHub Shared Load Balancer (SLB) pointing to the A record of the on-premises load balancer Apply mapping rules in the SLB to map URLs to their corresponding Mule applications
   • CDeploy the Mule applications to CloudHub Update the CNAME record for api.acme.com in the organization's DNS server pointing to the A record of a CloudHub dedicated load balancer (DLB) Apply mapping rules in the DLB to map URLs to their corresponding Mule applications
   • DFor each migrated Mule application, deploy an API Proxy Mule application to CloudHub, with all applications under the control of a CloudHub dedicated load balancer (DLB) Update the CNAME record for api.acme.com in the organization's DNS server pointing to the A record of a CloudHub dedicated load balancer (DLB) Apply mapping rules in the DLB to map each API Proxy application to its corresponding Mule application

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   Answer: A

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9. Question 69 · 101 in bank

   An organization has previously provisioned its own AWS VPC hosting various servers. The organization now needs to use CloudHub to host a Mule application that will implement a REST API. Once deployed to CloudHub, this Mule application must be able to communicate securely with the customer-provisioned AWS VPC resources within the same region, without being interceptable on the public Internet. What Anypoint Platform features should be used to meet these network communication requirements between CloudHub and the existing customer-provisioned AWS VPC?

   • AAdd a Mulesoft-hosted Anypoint VPC configured with VPC Peering to the AWS VPC
   • BAdd default API Whitelisting policies to API Manager to automatically whitelist the customer-provisioned AWS VPC IP ranges needed by the Mule application
   • CUse VM queues in the Mule application to allow any non-Mule assets within the customer-provisioned AWS VPC to subscribe to and receive messages
   • DConfigure an external identity provider (IdP) in Anypoint Platform with certificates from the customer-provisioned AWS VPC

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   Answer: A

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10. Question 70 · 101 in bank

    In a Mule application, a flow contains two (2) JMS Consume operations that are used to connect to a JMS broker and consume messages from two (2) JMS destinations. The Mule application then joins the two consumed JMS messages together. The JMS broker does NOT implement high availability (HA) and periodically experiences scheduled outages of up to 10 minutes for routine maintenance. What is the most idiomatic (used for its intended purpose) way to build the Mule flow so it can best recover from the expected outages?

    • AEnclose the two (2) JMS operations in a Try scope with an On Error Continue error handler
    • BEnclose the two (2) JMS operations in an Until Successful scope
    • CConfigure a transaction for the JMS connector
    • DConfigure a reconnection strategy for the JMS connector

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    Answer: D

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MCIA-Level-1 practice, question 61. 101 questions available.