Mule-Arch-202 Exam: Absolutely Free Online Practice

Question 1
- What is not true about Mule Domain Project?
  
  A : This allows Mule applications to share resources
  
  B : Expose multiple services within the Mule domain on the same port
  
  C : Only available Anypoint Runtime Fabric
  
  D : Send events (messages) to other Mule applications using VM queues
  
  Answer: C
Question 2
- A Mule application uses the Database connector. What condition can the Mule application automatically adjust to or recover from without needing to restart or redeploy the Mule application?
  
  A : One of the stored procedures being called by the Mule application has been renamed
  
  B :
  The database server was unavailable for four hours due to a major outage but is now fully operational again
  
  C :
  The credentials for accessing the database have been updated and the previous credentials are no longer valid
  
  D :
  The database server has been updated and hence the database driver library/JAR needs a minor version upgrade
  
  Answer: B
Question 3
- A DevOps team has adequate observability of individual system behavior and performance, but it struggles to track the entire lifecycle of each request across different microservices. Which additional observability approach should this team consider adopting?
  
  A : Analytics
  
  B : Metrics
  
  C : Tracing
  
  D : Data mining
  
  Answer: C
Question 4
- An Order microservice and a Fulfillment microservice are being designed to communicate with their dients through message-based integration (and NOT through API invocations). The Order microservice publishes an Order message (a kind of command message) containing the details of an order to be fulfilled. The intention is that Order messages are only consumed by one Mute application, the Fulfillment microservice. The Fulfilment microservice consumes Order messages, fulfills the order described therein, and then publishes an OrderFulfilted message (a kind of event message). Each OrderFulfilted message can be consumed by any interested Mule application, and the Order microservice is one such Mute application. What is the most appropriate choice of message broker(s) and message destination(s) in this scenario?
  
  A :
  Order messages are sent to an Anypoint MQ exchange OrderFulfilled messages are sent to an Anypoint MQ queue Both microservices interact with Anypoint MQ as the message broker, which must therefore scale to support the load of both microservices
  
  B :
  Order messages are sent to a JMS queue. OrderFulfilled messages are sent to a JMS topic Both microservices interact with the same JMS provider (message broker) instance, which must therefore scale to support the load of both microservices
  
  C :
  Order messages are sent directly to the Fulfillment microservices. OrderFulfilled messages are sent directly to the Order microservice The Order microservice interacts with one AMQP-compatible message broker and the Fulfillment microservice interacts with a different AMQP-compatible message broker, so that both message brokers can be chosen and scaled to best support the load of each microservice
  
  D :
  Order messages are sent to a JMS queue. OrderFulfilled messages are sent to a JMS topic The Order microservice interacts with one JMS provider (message broker) and the Fulfillment microservice interacts with a different JMS provider, so that both message brokers can be chosen and scaled to best support the load of each microservice
  
  Answer: B
Question 5
- A new upstream API Is being designed to offer an SLA of 500 ms median and 800 ms maximum (99th percentile) response time. The corresponding API implementation needs to sequentially invoke 3 downstream APIs of very similar complexity. The first of these downstream APIs offers the following SLA for its response time: median: 100 ms, 80th percentile: 500 ms, 95th percentile: 1000 ms. If possible, how can a timeout be set in the upstream API for the invocation of the first downstream API to meet the new upstream API's desired SLA?
  
  A : Set a timeout of 100 ms; that leaves 400 ms for the other two downstream APIs to complete
  
  B : Do not set a timeout; the Invocation of this API Is mandatory and so we must wait until it responds
  
  C : Set a timeout of 50 ms; this times out more invocations of that API but gives additional room for retries
  
  D :
  No timeout is possible to meet the upstream API-s desired SLA; a different SLA must be negotiated with the first downstream API or invoke an alternative API
  
  Answer: D

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