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無料MuleSoft MCIA-Level-1テスト練習問題試験問題集
質問 # 63
A trading company handles millions of requests a day. Due to nature of its business, it requires excellent performance and reliability within its application.
For this purpose, company uses a number of event-based API's hosted on various mule clusters that communicate across a shared message queue sitting within its network.
Which method should be used to meet the company's requirement for its system?
- A. JMS transactions
- B. JMS manual acknowledgements with a reliability pattern
- C. VM queues with reliability pattern
- D. XA transactions and XA connected components
正解：B
質問 # 64
A team would like to create a project skeleton that developers can use as a starting point when creating API Implementations with Anypoint Studio. This skeleton should help drive consistent use of best practices within the team.
What type of Anypoint Exchange artifact(s) should be added to Anypoint Exchange to publish the project skeleton?
- A. An example of an API implementation following best practices
- B. A custom asset with the default API implementation
- C. a Mule application template with the key components and minimal integration logic
- D. A RAML archetype and reusable trait definitions to be reused across API implementations
正解：C
質問 # 65
As a part of project , existing java implementation is being migrated to Mulesoft. Business is very tight on the budget and wish to complete the project in most economical way possible.
Canonical object model using java is already a part of existing implementation. Same object model is required by mule application for a business use case. What is the best way to achieve this?
- A. Create a custom application to read Java code and make it available for Mule application
- B. Make use of Java module
- C. Create similar model for Mule applications
- D. Use Anypoint exchange
正解：B
解説：
Mule 4 is built to:
* Minimize the need for custom code.
* Avoid the need for you to know or understand Java.
However, some advanced uses cases require integration with custom Java code, such as:
* Reuse of a library, such as a tax calculation library.
* Reuse of a canonical object model that is standard in the organization.
* Execution of custom logic using Java.
Mule ref doc : https://docs.mulesoft.com/java-module/1.2/
質問 # 66
Refer to the exhibit.
An organization is designing a Mule application to receive data from one external business partner. The two companies currently have no shared IT infrastructure and do not want to establish one. Instead, all communication should be over the public internet (with no VPN).
What Anypoint Connector can be used in the organization's Mule application to securely receive data from this external business partner?
- A. VM connector
- B. File connector
- C. SFTP connector
- D. Object Store connector
正解：C
解説：
* Object Store and VM Store is used for sharing data inter or intra mule applications in same setup. Can't be used with external Business Partner
* Also File connector will not be useful as the two companies currently have no shared IT infrastructure. It's specific for local use.
* Correct answer is SFTP connector. The SFTP Connector implements a secure file transport channel so that your Mule application can exchange files with external resources. SFTP uses the SSH security protocol to transfer messages. You can implement the SFTP endpoint as an inbound endpoint with a one-way exchange pattern, or as an outbound endpoint configured for either a one-way or request-response exchange pattern.
質問 # 67
Refer to the exhibit.
One of the backend systems invoked by an API implementation enforces rate limits on the number of requests a particular client can make. Both the backend system and the API implementation are deployed to several non-production environments in addition to production.
Rate limiting of the backend system applies to all non-production environments. The production environment, however, does NOT have any rate limiting.
What is the most effective approach to conduct performance tests of the API implementation in a staging (non-production) environment?
- A. Include logic within the API implementation that bypasses invocations of the backend system in a performance test situation. Instead invoking local stubs that replicate typical backend system responses then conduct performance tests using this API Implementation
- B. Create a mocking service that replicates the backend system's production performance characteristics. Then configure the API implementation to use the mocking service and conduct the performance tests
- C. Use MUnit to simulate standard responses from the backend system then conduct performance tests to identify other bottlenecks in the system
- D. Conduct scaled-down performance tests in the staging environment against the rate limited backend system then upscale performance results to full production scale
正解：B
解説：
Correct answer is Create a mocking service that replicates the backend system's production performance characteristics. Then configure the API implementation to use the mocking service and conduct the performance tests
* MUnit is for only Unit and integration testing for APIs and Mule apps. Not for performance Testing, even if it has the ability to Mock the backend.
* Bypassing the backend invocation defeats the whole purpose of performance testing. Hence it is not a valid answer.
* Scaled down performance tests cant be relied upon as performance of API's is not linear against load.
質問 # 68
Refer to the exhibit.
A Mule application has an HTTP Listener that accepts HTTP DELETE requests. This Mule application Is deployed to three CloudHub workers under the control of the CloudHub Shared Load Balancer.
A web client makes a sequence of requests to the Mule application's public URL.
How is this sequence of web client requests distributed among the HTTP Listeners running in the three CloudHub workers?
- A. Each request is routed (scattered) to ALL three CloudHub workers at the same time
- B. Each request is routed to ONE ARBiTRARY CloudHub worker in the PRIMARY Availability Zone (AZ)
- C. Each request is routed to the PRIMARY CloudHub worker in the PRIMARY Availability Zone (AZ)
- D. Each request Is routed to ONE ARBiTRARY CloudHub worker out of ALL three CloudHub workers
正解：D
解説：
Correct behavior is Each request is routed to ONE ARBITRARY CloudHub worker out of ALL three CloudHub workers
質問 # 69
Refer to the exhibit.
Anypoint Platform supports role-based access control (RBAC) to features of the platform. An organization has configured an external Identity Provider for identity management with Anypoint Platform.
What aspects of RBAC must ALWAYS be controlled from the Anypoint Platform control plane and CANNOT be controlled via the external Identity Provider?
- A. Removing a user's access to Anypoint Platform when they no longer work for the organization
- B. Controlling the business group within Anypoint Platform to which the user belongs
- C. Assigning Anypoint Platform role(s) to a user
- D. Assigning Anypoint Platform permissions to a role
正解：D
解説：
* By default, Anypoint Platform performs its own user management
- For user management, one external IdP can be integrated with the Anypoint Platform organization (note: not at business group level)
- Permissions and access control are still enforced inside Anypoint Platform and CANNOT be controlled via the external Identity Provider * As the Anypoint Platform organization administrator, you can configure identity management in Anypoint Platform to set up users for single sign-on (SSO). * You can map users in a federated organization's group to a role which also gives the flexibility of controlling the business group within Anypoint Platform to which the user belongs to. Also user can nbe removed from external identity management system when they no longer work for the organization. So they wont be able to authenticate using SSO to login to Anypoint Platform. * Using external identity we can no change permissions of a particular role in Mulesoft Anypoint platform.
* So Correct answer is Assigning Anypoint Platform permissions to a role
質問 # 70
An IT integration tram followed an API-led connectivity approach to implement an order-fulfillment business process. It created an order processing AP that coordinates stateful interactions with a variety of microservices that validate, create, and fulfill new product orders Which interaction composition pattern did the integration architect who designed this order processing AP| use?
- A. Multicasting
- B. Streaming
- C. Aggregation
- D. Orchestration
正解：D
質問 # 71
What operation can be performed through a JMX agent enabled in a Mule application?
- A. Replay an unsuccessful message
- B. Set a particular tog4J2 log level to TRACE
- C. View object store entries
- D. Deploy a Mule application
正解：D
質問 # 72
Refer to the exhibit. An organization is designing a Mule application to receive data from one external business partner. The two companies currently have no shared IT infrastructure and do not want to establish one. Instead, all communication should be over the public internet (with no VPN).
What Anypoint Connector can be used in the organization's Mule application to securely receive data from this external business partner?
- A. VM connector
- B. File connector
- C. SFTP connector
- D. Object Store connector
正解：C
質問 # 73
Refer to the exhibit.
A shopping cart checkout process consists of a web store backend sending a sequence of API invocations to an Experience API, which in turn invokes a Process API. All API invocations are over HTTPS POST. The Java web store backend executes in a Java EE application server, while all API implementations are Mule applications executing in a customer -hosted Mule runtime.
End-to-end correlation of all HTTP requests and responses belonging to each individual checkout Instance is required. This is to be done through a common correlation ID, so that all log entries written by the web store backend, Experience API implementation, and Process API implementation include the same correlation ID for all requests and responses belonging to the same checkout instance.
What is the most efficient way (using the least amount of custom coding or configuration) for the web store backend and the implementations of the Experience API and Process API to participate in end-to-end correlation of the API invocations for each checkout instance?
A)
The web store backend, being a Java EE application, automatically makes use of the thread-local correlation ID generated by the Java EE application server and automatically transmits that to the Experience API using HTTP-standard headers No special code or configuration is included in the web store backend, Experience API, and Process API implementations to generate and manage the correlation ID
B)
The web store backend generates a new correlation ID value at the start of checkout and sets it on the X-CORRELATlON-lt HTTP request header In each API invocation belonging to that checkout No special code or configuration is included in the Experience API and Process API implementations to generate and manage the correlation ID
C)
The Experience API implementation generates a correlation ID for each incoming HTTP request and passes it to the web store backend in the HTTP response, which includes it in all subsequent API invocations to the Experience API.
The Experience API implementation must be coded to also propagate the correlation ID to the Process API in a suitable HTTP request header
D)
The web store backend sends a correlation ID value in the HTTP request body In the way required by the Experience API The Experience API and Process API implementations must be coded to receive the custom correlation ID In the HTTP requests and propagate It in suitable HTTP request headers
- A. Option A
- B. Option C
- C. Option D
- D. Option B
正解：D
解説：
Correct answer is "The web store backend generates a new correlation ID value at the start of checkout and sets it on the X-CORRELATION-ID HTTP request header in each API invocation belonging to that checkout No special code or configuration is included in the Experience API and Process API implementations to generate and manage the correlation ID" Explanation: : By design, Correlation Ids cannot be changed within a flow in Mule 4 applications and can be set only at source. This ID is part of the Event Context and is generated as soon as the message is received by the application. When a HTTP Request is received, the request is inspected for "X-Correlation-Id" header. If "X-Correlation-Id" header is present, HTTP connector uses this as the Correlation Id. If "X-Correlation-Id" header is NOT present, a Correlation Id is randomly generated. For Incoming HTTP Requests: In order to set a custom Correlation Id, the client invoking the HTTP request must set "X-Correlation-Id" header. This will ensure that the Mule Flow uses this Correlation Id. For Outgoing HTTP Requests: You can also propagate the existing Correlation Id to downstream APIs. By default, all outgoing HTTP Requests send "X-Correlation-Id" header. However, you can choose to set a different value to "X-Correlation-Id" header or set "Send Correlation Id" to NEVER.
Mulesoft Reference: https://help.mulesoft.com/s/article/How-to-Set-Custom-Correlation-Id-for-Flows-with-HTTP-Endpoint-in-Mule-4
質問 # 74
A global organization operates datacenters in many countries. There are private network links between these datacenters because all business data (but NOT metadata) must be exchanged over these private network connections.
The organization does not currently use AWS in any way.
The strategic decision has Just been made to rigorously minimize IT operations effort and investment going forward.
What combination of deployment options of the Anypoint Platform control plane and runtime plane(s) best serves this organization at the start of this strategic journey?
- A. MuleSoft-hosted Anypoint Platform control plane Customer-hosted runtime plane in each datacenter Hybrid is the best choice to start. Mule hosted Control plane and Customer hosted Runtime to start with. Once they mature in cloud migration, everything can be in Mule hosted.
- B. MuleSoft-hosted Anypoint Platform control plane CloudHub Shared Worker Cloud in multiple AWS regions
- C. MuleSoft-hosted Anypoint Platform control plane Customer-hosted runtime plane in multiple AWS regions
- D. Anypoint Platform - Private Cloud Edition Customer-hosted runtime plane in each datacenter
正解：A
質問 # 75
A Mule application is synchronizing customer data between two different database systems.
What is the main benefit of using XA transaction over local transactions to synchronize these two database system?
- A. Reduce latency
- B. Ensure consistency
- C. Increase throughput
- D. Simplifies communincation
正解：B
解説：
* XA transaction add tremendous latency so "Reduce Latency" is incorrect option XA transactions define "All or No" commit protocol.
* Each local XA resource manager supports the A.C.I.D properties (Atomicity, Consistency, Isolation, and Durability).
--------------------------------------------------------------------------------------------------------------------- So correct choice is "Ensure consistency"
質問 # 76
An integration Mule application is deployed to a customer-hosted multi-node Mule 4 runtime cluster. The Mule application uses a Listener operation of a JMS connector to receive incoming messages from a JMS queue.
How are the messages consumed by the Mule application?
- A. Regardless of the Listener operation configuration, all messages are consumed by ALL cluster nodes
- B. Depending on the Listener operation configuration, either all messages are consumed by ONLY the primary cluster node or else EACH message is consumed by ANY ONE cluster node
- C. Depending on the JMS provider's configuration, either all messages are consumed by ONLY the primary cluster node or else ALL messages are consumed by ALL cluster nodes
- D. Regardless of the Listener operation configuration, all messages are consumed by ONLY the primary cluster node
正解：C
質問 # 77
A stock broking company makes use of CloudHub VPC to deploy Mule applications. Mule application needs to connect to a database application in the customers on-premises corporate data center and also to a Kafka cluster running in AWS VPC.
How is access enabled for the API to connect to the database application and Kafka cluster securely?
- A. Setup VPC peering with AWS VPC and the customers devices corporate data center
- B. Set up a transit gateway to the customers on-premises corporate datacenter to AWS VPC
- C. Setup VPC peering with the customers onto my service corporate data center and Anypoint VPN to AWS VPC
- D. Setup AnyPoint VPN to the customer's on-premise corporate data
center and VPC peering with AWS VPC
正解：D
質問 # 78
A Mule application is deployed to a cluster of two(2) cusomter-hosted Mule runtimes. Currently the node name Alice is the primary node and node named bob is the secondary node. The mule application has a flow that polls a directory on a file system for new files.
The primary node Alice fails for an hour and then restarted.
After the Alice node completely restarts, from what node are the files polled, and what node is now the primary node for the cluster?
- A. Files are polled form Bob node
Bob is now the primary node - B. Files are polled from Alice node
Bob is the now the primary node - C. Files are polled from Alice node
Alice is now the primary node - D. Files are polled form Bob node
Alice is now the primary node
正解：A
解説：
* Mule High Availability Clustering provides basic failover capability for Mule.
* When the primary Mule Runtime becomes unavailable, for example, because of a fatal JVM or hardware failure or it's taken offline for maintenance, a backup Mule Runtime immediately becomes the primary node and resumes processing where the failed instance left off.
* After a system administrator recovers a failed Mule Runtime server and puts it back online, that server automatically becomes the backup node. In this case, Alice, once up, will become backup
Reference: https://docs.mulesoft.com/mule-runtime/4.3/hadr-guide
So correct choice is : Files are polled form Bob node Bob is now the primary node
質問 # 79
Refer to the exhibit.
An organization is designing a Mule application to receive data from one external business partner. The two companies currently have no shared IT infrastructure and do not want to establish one. Instead, all communication should be over the public internet (with no VPN).
What Anypoint Connector can be used in the organization's Mule application to securely receive data from this external business partner?
- A. VM connector
- B. File connector
- C. SFTP connector
- D. Object Store connector
正解：C
解説：
* Object Store and VM Store is used for sharing data inter or intra mule applications in same setup. Can't be used with external Business Partner
* Also File connector will not be useful as the two companies currently have no shared IT infrastructure. It's specific for local use.
* Correct answer is SFTP connector. The SFTP Connector implements a secure file transport channel so that your Mule application can exchange files with external resources. SFTP uses the SSH security protocol to transfer messages. You can implement the SFTP endpoint as an inbound endpoint with a one-way exchange pattern, or as an outbound endpoint configured for either a one-way or request-response exchange pattern.
質問 # 80
Refer to the exhibit. A Mule application is deployed to a multi-node Mule runtime cluster. The Mule application uses the competing consumer pattern among its cluster replicas to receive JMS messages from a JMS queue.
To process each received JMS message, the following steps are performed in a flow:
Step 1: The JMS Correlation ID header is read from the received JMS message.
Step 2: The Mule application invokes an idempotent SOAP webservice over HTTPS, passing the JMS Correlation ID as one parameter in the SOAP request.
Step 3: The response from the SOAP webservice also returns the same JMS Correlation ID.
Step 4: The JMS Correlation ID received from the SOAP webservice is validated to be identical to the JMS Correlation ID received in Step 1.
Step 5: The Mule application creates a response JMS message, setting the JMS Correlation ID message header to the validated JMS Correlation ID and publishes that message to a response JMS queue.
Where should the Mule application store the JMS Correlation ID values received in Step 1 and Step 3 so that the validation in Step 4 can be performed, while also making the overall Mule application highly available, fault- tolerant, performant, and maintainable?
- A. The Correlation ID value in Step 1 should be stored in a persistent object store The Correlation ID value in Step 3 should be stored as a Mule event variable/attribute
- B. Both Correlation ID values should be stored as Mule event variables/attributes
- C. Both Correlation ID values should be stored in a persistent object store
- D. Both Correlation ID values should be stored in a non-persistent object store
正解：A
質問 # 81
What are two reasons why a typical MuleSoft customer favors a MuleSoft-hosted Anypoint Platform runtime plane over a customer-hosted runtime for its Mule application deployments? (Choose two.)
- A. Increased application isolation
- B. Increased application throughput
- C. Reduced IT operations effort
- D. Reduced time-to-market for the first application
- E. Reduced application latency
正解：C、D
質問 # 82
Refer to the exhibit.
A business process involves two APIs that interact with each other asynchronously over HTTP. Each API is implemented as a Mule application. API 1 receives the initial HTTP request and invokes API 2 (in a fire and forget fashion) while API 2, upon completion of the processing, calls back into API l to notify about completion of the asynchronous process.
Each API Is deployed to multiple redundant Mule runtimes and a separate load balancer, and is deployed to a separate network zone.
In the network architecture, how must the firewall rules be configured to enable the above Interaction between API 1 and API 2?
- A. To enable communication from each API's Mule runtimes and network zone to the toad balancer of the other API
- B. To allow communication between the load balancers used by each API
- C. To authorize the certificates used by both the apis
- D. To open direct two-way communication between the Mule runtimes of both APIs
正解：A
質問 # 83
A developer needs to discover which API specifications have been created within the organization before starting a new project.
Which Anypoint Platform component can the developer use to find and try out the currently released API specifications?
- A. API Manager
- B. Runtime Manager
- C. Object Store
- D. Anypoint Exchange
正解：D
質問 # 84
According to MuleSoft, what Action should an IT organization take regarding its technology assets in order to close the IT delivery.
- A. Make assets easily discoverable via a central repository
- B. Hire additional staff to meet the demand for asset creation required for approved projects and timelines
- C. Focus project delivery efforts on custom assets that meet the specific requirements of each individual line of business
- D. Create weekly meetings that all members of IT attend to present justification and request approval to use existing assets
正解：C
質問 # 85
An organization has decided on a cloudhub migration strategy that aims to minimize the organizations own IT resources. Currently, the organizational has all of its Mule applications running on its own premises and uses an 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 the Mule applications deployment and load balancing that preserves the public URLs?
- A. Deploy the Mule applications to Cloudhub
Update the CNAME record for an api.acme.com in the organizations 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 - B. Deploy the Mule applications to Cloudhub
Create CNAME record for api.acme.com in the Cloudhub Shared load balancer (SLB) pointing to the A record of the on-premise load balancer Apply mapping rules in the SLB to map URLs to their corresponding Mule applications - C. For each migrated Mule application, deploy an API proxy Mule application to Cloudhub with all applications under the control of a dedicated load balancer(CLB) Update the CNAME record for api.acme.com in the organization 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 applications
- D. Deploy the Mule applications to Cloudhub
Update the CNAME record for api.acme.com in the organization 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.
正解：D
質問 # 86
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