MuleSoft MCIA-Level-1-Maintenance 問題集

質問 1：
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. 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
B. Anypoint monitoring agent on each mule runtime
Anypoint monitoring agent sends monitoring data from the mule applications to Anypoint monitoring
C. Install runtime manager agent on each mule runtime
Runtime manager agent since monitoring data from the mule applications to Anypoint monitoring
D. Enable monitoring of individual applications from runtime manager application settings Runtime manager agent sends monitoring data from the mule applications to Anypoint monitoring
正解：B

質問 2：
A Mule application is being designed for deployment to a single CloudHub worker. The Mule application will have a flow that connects to a SaaS system to perform some operations each time the flow is invoked.
The SaaS system connector has operations that can be configured to request a short-lived token (fifteen minutes) that can be reused for subsequent connections within the fifteen minute time window. After the token expires, a new token must be requested and stored.
What is the most performant and idiomatic (used for its intended purpose) Anypoint Platform component or service to use to support persisting and reusing tokens in the Mule application to help speed up reconnecting the Mule application to the SaaS application?
A. Variable
B. Database
C. Nonpersistent object store
D. Persistent object store
正解：B

質問 3：
One of the backend systems involved by the API implementation enforces rate limits on the number of request a particle client can make.
Both the back-end system and API implementation are deployed to several non-production environments including the staging environment and to a particular production environment. Rate limiting of the back-end system applies to all non-production environments.
The production environment however does not have any rate limiting.
What is the cost-effective approach to conduct performance test of the API implementation in the non-production staging environment?
A. Use MUnit to simulate standard responses from the back-end system.
Then conduct performance test to identify other bottlenecks in the system
B. Including logic within the API implementation that bypasses in locations of the back-end system in the staging environment and invoke a Mocking service that replicates typical back-end system responses Then conduct performance test using this API implementation
C. Create a Mocking service that replicates the back-end system's
production performance characteristics
Then configure the API implementation to use the mocking
service and conduct the performance test
D. Conduct scaled-down performance tests in the staging environment against rate-limiting back-end system. Then upscale performance results to full production scale
正解：C

質問 4：
A banking company is developing a new set of APIs for its online business. One of the critical API's is a master lookup API which is a system API. This master lookup API uses persistent object store. This API will be used by all other APIs to provide master lookup data.

Master lookup API is deployed on two cloudhub workers of 0.1 vCore each because there is a lot of master data to be cached. Master lookup data is stored as a key value pair. The cache gets refreshed if they key is not found in the cache.
Doing performance testing it was observed that the Master lookup API has a higher response time due to database queries execution to fetch the master lookup data.
Due to this performance issue, go-live of the online business is on hold which could cause potential financial loss to Bank.
As an integration architect, which of the below option you would suggest to resolve performance issue?
A. Add an additional Cloudhub worker to provide additional capacity
B. Implement HTTP caching policy for all GET endpoints for master lookup API
C. Upgrade vCore size from 0.1 vCore to 0,2 vCore
D. Implement HTTP caching policy for all GET endpoints for the master lookup API and implement locking to synchronize access to object store
正解：D

質問 5：
An insurance company is using a CIoudHub runtime plane. As a part of requirement, email alert should be sent to internal operations team every time of policy applied to an API instance is deleted As an integration architect suggest on how this requirement be met?
A. Implement a new application that uses the Audit log REST API to detect the policy deletion and send an email to operations team the SMTP connector
B. Use Anypoint monitoring to configure an alert that sends an email to the operations team every time a policy is deleted in API manager
C. Use audit logs in Anypoint platform to detect a policy deletion and configure the Audit logs alert feature to send an email to the operations team
D. Create a custom connector to be triggered every time of policy is deleted in API manager
正解：A

質問 6：
An API has been updated in Anypoint Exchange by its API producer from version 3.1.1 to 3.2.0 following accepted semantic versioning practices and the changes have been communicated via the API's public portal.
The API endpoint does NOT change in the new version. How should the developer of an API client respond to this change?
A. The update should be identified as a project risk and full regression testing of the functionality that uses this API should be run.
B. The API producer should be requested to run the old version in parallel with the new one.
C. The API client code ONLY needs to be changed if it needs to take advantage of new features.
D. The API producer should be contacted to understand the change to existing functionality.
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 7：
How does timeout attribute help inform design decisions while using JMS connector listening for incoming messages in an extended architecture (XA) transaction?
A. The time allowed to pass between committing the transaction and the completion of the mule flow and then after the timeout flow processing triggers an error
B. The timeout specifies the time allowed to pass between receiving JMS messages on the same JMS connection and then after the timeout new JMS connection is established
C. The timeout defines the time that is allowed to pass without the transaction ending explicitly and after the timeout expires, the transaction rolls back
D. After the timeout is exceeded, stale JMS consumer threads are destroyed and new threads are created
正解：C

質問 8：
A company is implementing a new Mule application that supports a set of critical functions driven by a rest API enabled, claims payment rules engine hosted on oracle ERP. As designed the mule application requires many data transformation operations as it performs its batch processing logic.
The company wants to leverage and reuse as many of its existing java-based capabilities (classes, objects, data model etc.) as possible What approach should be considered when implementing required data mappings and transformations between Mule application and Oracle ERP in the new Mule application?
A. Invoke any of the appropriate Java methods directly, create metadata RAML classes and then perform required transformations via Dataweave
B. Transform by calling any suitable Java class from Dataweave
C. From the mule application, transform via theXSLT model
D. Create a new metadata RAML classes in Mule from the appropriate Java objects and then perform transformations via Dataweave
正解：B

質問 9：
The implementation of a Process API must change. What is a valid approach that minimizes the impact of this change on API clients?
A. Implement the Process API changes in a new API implementation, and have the old API implementation return an HTTP status code 301 - Moved Permanently to inform API clients they should be calling the new API implementation
B. Postpone changes until API consumers acknowledge they are ready to migrate to a new Process API or API version
C. Implement required changes to the Process API implementation so that whenever possible, the Process API's RAML definition remains unchanged
D. Update the RAML definition of the current Process API and notify API client developers by sending them links to the updated RAML definition
正解：C
解説: (Topexam メンバーにのみ表示されます)