Salesforce Certified MuleSoft Developer II 問題集 : Mule-Dev-301

Which pattern should be used to invoke multiple HTTP APIs in parallel and roll back failed requests in sequence?

• A. A Parallel for Each scope with each HTTP request wrapped in a Try scope
• B. A database as a transactional outbox and an Until Successful router to retry any requests
• C. Scatter-Gather as central Saga orchestrator for all API request with compensating actions for failing routes
• D. VM queues as a reliability pattern with error handlers to roll back any requests

A Mule API receives a JSON payload and updates the target system with the payload. The developer uses JSON schemas to ensure the data is valid.
How can the data be validation before posting to the target system?

• A. Use a DataWeave 2.09 transform operation, and at the log of the DataWeave script, add:
  %dw 2.0
  Import.json-moduls
• B. Add the JSON module dependency and add the validate-schema operation in the flow, configured to reference the schema
• C. Apply the JSON Schema policy in API Manager and reference the correct schema in the policy configuration
• D. Using the DataWeave if Else condition test the values of the payload against the examples included in the schema

A Flight Management System publishes gate change notification events whenever a flight's arrival gate changes. Other systems, including Baggage Handler System. Inflight Catering System and Passenger Notifications System, must each asynchronously receive the same gate change notification to process the event according.
Which configuration is required in Anypoint MQ to achieve this publish/subscribe model?

• A. Publish the gate change notification to an Anypoint MC queue
  Have each client subscribe directly to the queue
• B. Publish each client subscribe directly to the exchange.
  Have each client subscribe directly to the queue.
• C. Publish the gate change notification to an Anypoint MQ exchanhe.
  Create different Anypoint MQ queues meant for each of the other subscribing systems.Bind the exchange with each of the queues.
• D. Publish the gate change notification to an Anypoint MQ queue.
  Create different anypoint MQ exchange meant for each of the other subscribing systems Bind the queue with each of the exchanges

Two APIs are deployed to a two-node on-prem cluster. Due to a requirements change, the two APIs must communicate to exchange data asynchronously.

• A. Instead of using the VM Connector use <flow-ref>directly
• B. If the two APIs use the same domain, the VM Connector can be leveraged
• C. The VM Connector is used to inter-application communication, so it is not possible to use the VM Connector
• D. It is not possible to use the VM Connector since the APIs are running in a cluster mode and each mode has it own set of VM Queues

A developer deploys an API to CloudHub and applies an OAuth policy on API Manager. During testing, the API response is slow, so the developer reconfigures the API so that the out-of-the-box HTTP Caching policy is applied first, and the OAuth API policy is applied second.
What will happen when an HTTP request is received?

• A. In case of a cache hit, both the OAuth and HTTP Caching policies are evaluated; then the cached response is returned to the caller
• B. In case of a cache miss, both the OAuth and HTTP Caching policies are evaluated; then the API retrieves the data from the API implementation, and the policy does not store the data in Object Store
• C. In case of a cache it, only the HTTP Caching policy is evaluating; then the cached response is returned to the caller
• D. In case of a cache miss, only the HTTP Caching policy is evaluated; then the API retrieves the data from the API implementation, and the policy stores the data to be cached in Object Store