MCD-Level-2 Actual Questions Answers PDF 100% Cover Real Exam Questions
MCD-Level-2 Exam questions and answers
NEW QUESTION # 24
The flow is invoicing a target API. The API's protocol is HTTPS. The TLS configuration in the HTTP Request Configuration global element is set to None. A web client submits a request to
http:localhost:8081/vehicles.
If the certificate of the target API is signed by a certificate authority (CA), what is true about the HTTP Request operation when the flow executes?
- A. The HTTP Request operation will always succeed regardless of the CA
- B. The HTTP Request operation will always fail regardless of the CA
- C. The HTTP Request operation will succeed if the CA's certificate is present in the JRE's default truststore.
- D. The HTTP Request operation will succeed if the CA'S certificate is present in the JRE's default keystore
Answer: C
Explanation:
Explanation
The HTTP Request operation will use the default truststore of the JRE to validate the certificate of the target API. If the CA's certificate is present in the truststore, the operation will succeed. Otherwise, it will fail with a handshake exception. References: https://docs.mulesoft.com/mule-runtime/4.3/tls-configuration#tls-default
NEW QUESTION # 25
Refer to the exhibit.
What is the result of the Mule Maven Plugin configuration of the value of property its,keystorePassoword in CloudHub 2.0?
- A. Runtime Manager masks the value
- B. The Mule server encrypts the value
- C. CloudHub encrypts the value
- D. Anypoint Studio secures the value
Answer: A
Explanation:
Explanation
The result of the Mule Maven Plugin configuration of the value of property its,keystorePassword in CloudHub
2.0 is that Runtime Manager masks the value. This means that Runtime Manager hides or obscures the value from anyone who views it in Runtime Manager or Anypoint Platform. References:
https://docs.mulesoft.com/runtime-manager/runtime-manager-agent-for-mule4#properties-tab
NEW QUESTION # 26
Refer to the exhibit.
When creating a new project, which API implementation allows for selecting the correct API version and scaffolding the flows from the API specification?
- A. Import a published API
- B. Import RAML from local file
- C. Download RAML from Design Center'
- D. Generate a local RAML from anypoint Studio
Answer: A
Explanation:
Explanation
To create a new project that selects the correct API version and scaffolds the flows from the API specification, the developer should import a published API. This option allows importing an API specification that has been published to Anypoint Exchange or Design Center, and selecting a specific version of that API specification.
The developer can also choose to scaffold flows based on that API specification. References:
https://docs.mulesoft.com/apikit/4.x/apikit-4-new-project-task
NEW QUESTION # 27
A system API that communicates to an underlying MySQL database is deploying to CloudHub. The DevOps team requires a readiness endpoint to monitor all system APIs.
Which strategy should be used to implement this endpoint?
- A. Create a dedicated endpoint that responds with the API status and reachability of the underlying systems
- B. Use an existing resource endpoint of the API
- C. Create a dedicated endpoint that responds with the API status and health of the server
- D. Create a dedicated endpoint that responds with the API status only
Answer: A
Explanation:
Explanation
To implement a readiness endpoint to monitor all system APIs, the developer should create a dedicated endpoint that responds with the API status and reachability of the underlying systems. This way, the DevOps team can check if the system API is ready to receive requests and if it can communicate with its backend systems without errors. References:
https://docs.mulesoft.com/mule-runtime/4.3/deployment-strategies#readiness-probes
NEW QUESTION # 28
An order processing system is composed of multiple Mule application responsible for warehouse, sales and shipping. Each application communication using Anypoint MQ. Each message must be correlated against the original order ID for observability and tracing.
How should a developer propagate the order ID as the correlation ID across each message?
- A. Use the underlying HTTP request of Anypoint MQ to set the 'X-CORRELATION_ID' header to the order ID
- B. Use the default correlation ID, Anypoint MQ will sutomatically propagate it.
- C. Set a custom Anypoint MQ user property to propagate the order ID and set the correlation ID in the receiving applications.
- D. Wrap all Anypoint MQ Publish operations within a With CorrelationID scope from the Tracing module, setting the correlation ID to the order ID
Answer: D
Explanation:
Explanation
To propagate the order ID as the correlation ID across each message using Anypoint MQ, the developer should wrap all Anypoint MQ Publish operations within a With CorrelationID scope from the Tracing module, setting the correlation ID to the order ID. The With CorrelationID scope allows setting a custom correlation ID for any event that occurs within it. The Tracing module also enables distributed tracing across different Mule applications and services using Anypoint Monitoring. References:
https://docs.mulesoft.com/tracing-module/1.0/tracing-module-reference#with-correlation-id-scope
https://docs.mulesoft.com/tracing-module/1.0/tracing-module-concepts
NEW QUESTION # 29
A company has been using CI/CD. Its developers use Maven to handle build and deployment activities.
What is the correct sequence of activities that takes place during the Maven build and deployment?
- A. Validation, initialize, compile, test, package, install verify, deploy
- B. Initialize, validate, compute, test, package, verify, install, deploy
- C. Validate, initialize, compile, test package, verify, install, deploy
- D. Validate, initialize, compile, package, test, install, verify, verify, deploy
Answer: C
Explanation:
Explanation
The correct sequence of activities that takes place during the Maven build and deployment is validate, initialize, compile, test package, verify, install, deploy. These are Maven lifecycle phases that define a sequence of goals to execute during a build process. Each phase represents a stage in the build lifecycle and can have zero or more goals bound to it. References:
https://maven.apache.org/guides/introduction/introduction-to-the-lifecycle.html
NEW QUESTION # 30
Refer to the exhibit.
What required changes can be made to give a partial successful response in case the United Airlines API returns with a timeout?
- A. Add a Scatter-gather component inside a Try scope.
Set the payload to a default value 'Error' inside the error handler using the On Error Propagate scope. - B. Add Flow Reference components inside a Try scope
Set the payload to a default value '' inside the error handler using the On Error Propagate scope - C. Add Flow Reference components inside a Try scope.
Set the payload to a default value'' insider the error handler using the ON Error Continue scope - D. Add a Scatter-Gather component inside a Try scope.
Set the payload to a default value 'Error'' inside the error handler using the On Error Continue scope.
Answer: D
Explanation:
Explanation
To give a partial successful response in case the United Airlines API returns with a timeout, the developer should add a Scatter-Gather component inside a Try scope, and set the payload to a default value 'Error' inside the error handler using the On Error Continue scope. A Scatter-Gather component allows sending multiple requests concurrently and aggregating the responses into an array. A Try scope allows handling errors that occur within it using an error handler. An On Error Continue scope allows continuing the flow execution after handling an error. Therefore, by using these components, the developer can send requests to both APIs in parallel, handle any timeout errors from United Airlines API, and return a partial response with a default value for that API. References: https://docs.mulesoft.com/mule-runtime/4.3/scatter-gather-concept
https://docs.mulesoft.com/mule-runtime/4.3/try-scope-concept
https://docs.mulesoft.com/mule-runtime/4.3/on-error-continue-concept
NEW QUESTION # 31
In a Mule project, Flow-1 contains a flow-ref to Flow-2 depends on data from Flow-1 to execute successfully.
Which action ensures the test suites and test cases written for Flow-1 and Flow-2 will execute successfully?
- A. Chain together the test suites and test cases for Flow-1 and Flow-2
- B. Use 'After Test Case' to produce the data needed from Flow-1 test cases to pass to Flow-2 test cases
- C. Use ''Set Event to pass the input that is needed, and keep the test cases for Flow-1 and Flow-2 independent
- D. Use ''Before Test Case'' To collect data from Flow-1 test cases before running Flow-2 test cases
Answer: C
Explanation:
Explanation
To ensure the test suites and test cases written for Flow-1 and Flow-2 will execute successfully, the developer should use a Set Event processor to pass the input that is needed by Flow-2, and keep the test cases for Flow-1 and Flow-2 independent. This way, the developer can isolate the testing of each flow and avoid coupling them together. References: https://docs.mulesoft.com/munit/2.3/munit-test-flow
NEW QUESTION # 32
Which type of cache invalidation does the Cache scope support without having to write any additional code?
- A. White-behind invalidation
- B. Write-through invalidation
- C. Notification-based invalidation
- D. Time to live
Answer: D
Explanation:
Explanation
The Cache scope supports time to live (TTL) as a cache invalidation strategy without having to write any additional code. TTL specifies how long the cached response is valid before it expires and needs to be refreshed. The Cache scope also supports custom invalidation strategies using MEL or DataWeave expressions. References: https://docs.mulesoft.com/mule-runtime/4.3/cache-scope#cache_invalidation
NEW QUESTION # 33
A company deploys 10 public APIs to CloudHub. Each API has its individual health endpoint defined. The platform operation team wants to configure API Functional Monitoring to monitor the health of the APIs periodically while minimizing operational overhead and cost.
How should API Functional Monitoring be configured?
- A. From 10 public locations with each API in its own schedule
- B. From one public location with all 10 APIs in a single schedule
- C. From one private location with all 10 APIs in a single schedule
- D. From one public location with each API in its own schedule
Answer: B
Explanation:
Explanation
To configure API Functional Monitoring to monitor the health of 10 public APIs periodically while minimizing operational overhead and cost, the developer should use one public location with all 10 APIs in a single schedule. A public location is a worker that runs in a CloudHub shared environment, which is cheaper and easier to maintain than a private location. A single schedule allows running all 10 APIs tests at the same time and frequency, which reduces complexity and resource consumption. References:
https://docs.mulesoft.com/functional-monitoring/fm-create-monitor#create-a-monitor
NEW QUESTION # 34
Refer to the exhibit.
What is the result if ''Insecure'' selected as part of the HTTP Listener configuration?
- A. Mutual TLS authentication will be enabled between this HTTP Listener and an HTTP client
- B. The HTTP Lister will accept any unauthenticated request
- C. The HTTP listener will only accept HTTP requests
- D. The HTTP Listener will trust any certificate presented by the HTTP client
Answer: C
Explanation:
Explanation
Based on the exhibit below, if 'Insecure' is selected as part of the HTTP Listener configuration, the HTTP listener will only accept HTTP requests. This means that no TLS context will be configured for this listener and no encryption or authentication will be applied to incoming requests. The protocol attribute of this listener will be set to HTTP instead of HTTPS. References:
https://docs.mulesoft.com/http-connector/1.6/http-listener-ref#insecure
NEW QUESTION # 35
Which pattern can a web API use to notify its client of state changes as soon as they occur?
- A. Schedule Event Publisher
- B. HTTP Webhock
- C. Shared database trigger
- D. ETL data load
Answer: B
Explanation:
Explanation
A web API can use HTTP Webhook to notify its client of state changes as soon as they occur. A webhook is an HTTP callback that allows an API to send real-time notifications to another system or application when an event happens. The client registers a URL with the API where it wants to receive notifications, and then the API sends an HTTP request to that URL with information about the event. References:
https://docs.mulesoft.com/connectors/webhook/webhook-connector
NEW QUESTION # 36
A Mule application includes a subflow containing a Scatter.Gather scope. Within each log of the Scatter.Gatter. an HTTP connector calls a PUT endpoint to modify records in different upstream system. The subflow is called inside an Unit successful scope to retry if a transitory exception is raised.
A technical spike is being performed to increase reliability of the Mule application.
Which steps should be performed within the Mule flow above the ensure idempontent behavior?
- A. Remove the Put requests from the Scatter-Getter and perform them sequentially
- B. None, the flow already exhibits idempotent behavior
- C. Ensure an error-handling flow performs corrective actions to roll back all changes if any leg of the Scatter-Gather fails
- D. Change the PUT requests inside the Scatter-Gather to POST requests
Answer: C
Explanation:
Explanation
To ensure idempotent behavior within a Mule flow that contains a subflow with a Scatter-Gather scope, the developer should ensure an error-handling flow performs corrective actions to roll back all changes if any leg of the Scatter-Gather fails. Idempotency means that multiple identical requests have the same effect as a single request. Therefore, if one of the HTTP requests inside the Scatter-Gather fails, the error-handling flow should undo any changes made by other successful requests to ensure consistency and avoid partial updates.
References: https://docs.mulesoft.com/mule-runtime/4.3/scatter-gather-concept
https://docs.mulesoft.com/mule-runtime/4.3/error-handling
NEW QUESTION # 37
Which command is used to convert a JKS keystore to PKCS12?
- A. Keytool-importkeystore -srckeystore keystore p12-srcstoretype JKS -destkeystore keystore.p12
-deststoretype PKCS12 - B. Keytool-importkeystore -srckeystore keystore jks-srcstoretype PKCS12 -destkeystore keystore.p12
-deststoretype JKS - C. Keytool-importkeystore -srckeystore keystore jks-srcstoretype JKS -destkeystore keystore.p13
-deststoretype PKCS12 - D. Keytool-importkeystore -srckeystore keystore p12-srcstoretype PKCS12 -destkeystore keystore.jks
-deststoretype JKS
Answer: A
Explanation:
Explanation
To convert a JKS keystore to PKCS12, the developer needs to use the keytool-importkeystore command with the following options: -srckeystore keystore.jks -srcstoretype JKS -destkeystore keystore.p12 -deststoretype PKCS12. This command imports all entries from a source JKS keystore (keystore.jks) into a destination PKCS12 keystore (keystore.p12). References:
https://docs.oracle.com/en/java/javase/11/tools/keytool.html#GUID-5990A2E4-78E3-47B7-AE75-6D182625954
NEW QUESTION # 38
An organization uses CloudHub to deploy all of its applications.
How can a common-global-handler flow be configured so that it can be reused across all of the organization's deployed applications?
- A. Create a Mule daman project.
Create a common-global-error-handler flow inside the domain project.
Use this domain project as a dependency. - B. Create a common-global-error-handler flow in all Mule Applications Refer to it flow-ref wherever needed.
- C. Create a Mule plugin project
Create a common-global-error-handler flow inside the plugin project.
Use this plugin as a dependency in all Mute applications.
Import that configuration file in Mute applications. - D. Create a Mule Plugin project
Create a common-global-error-handler flow inside the plugin project.
Use this plugin as a dependency in all Mule applications
Answer: D
Explanation:
Explanation
To configure a common-global-handler flow that can be reused across all of the organization's deployed applications, the developer should create a Mule Plugin project, create a common-global-error-handler flow inside the plugin project, and use this plugin as a dependency in all Mule applications. This way, the developer can import the common-global-error-handler flow in any application that needs it and avoid duplicating the error handling logic. References:
https://docs.mulesoft.com/mule-runtime/4.3/error-handling#global-error-handler
NEW QUESTION # 39
Which pattern should be used to invoke multiple HTTP APIs in parallel and roll back failed requests in sequence?
- A. Scatter-Gather as central Saga orchestrator for all API request with compensating actions for failing routes
- B. VM queues as a reliability pattern with error handlers to roll back any requests
- C. A database as a transactional outbox and an Until Successful router to retry any requests
- D. A Parallel for Each scope with each HTTP request wrapped in a Try scope
Answer: A
Explanation:
Explanation
To invoke multiple HTTP APIs in parallel and roll back failed requests in sequence, the developer should use a Scatter-Gather router as a central Saga orchestrator for all API requests with compensating actions for failing routes. A Scatter-Gather router executes multiple routes concurrently and aggregates the results. A Saga orchestrator coordinates a series of actions across different services and handles failures by executing compensating actions. Therefore, using a Scatter-Gather router as a Saga orchestrator allows invoking multiple HTTP APIs in parallel and rolling back any failed requests in sequence. References:
https://docs.mulesoft.com/mule-runtime/4.3/scatter-gather-concept
https://docs.mulesoft.com/mule-runtime/4.3/saga
NEW QUESTION # 40
Refer to the exhibit.
Based on the code snippet, schema,json file, and payload below, what is the outcome of the given code snippet when a request is sent with the payload?
- A. The Mule flow will throw the exception 'JSON:SCHEMA_NOT_HONOURED
- B. The Mule flow will execute successfully with status code 200, and the response will be the JSON sent in request
- C. The Mule flow will execute successfully with status code 200m and a response will display the message
'' Age in years which must equal to or greater than zero.'' - D. The Mule flow will execute successfully with status code 204
Answer: A
Explanation:
Explanation
Based on the code snippet, schema.json file, and payload below, the outcome of the given code snippet when a request is sent with the payload is that the Mule flow will throw the exception
'JSON:SCHEMA_NOT_HONOURED'. This is because the payload does not conform to the schema.json file, which specifies that age must be a number greater than or equal to zero. The payload has age as a string with a negative value, which violates the schema. Therefore, the validate-schema operation throws an error with type
'JSON:SCHEMA_NOT_HONOURED'. References:
https://docs.mulesoft.com/json-module/1.1/json-validate-schema
NEW QUESTION # 41
Refer to the exhibit.
A Mule application pom.xml configures the Maven Resources plugin to exclude parsing binary files in the project's src/main/resources/certs directory.
Which configuration of this plugin achieves a successful build?
- A.
- B.
- C.
- D.
Answer: A
Explanation:
Explanation
To configure the Maven Resources plugin to exclude parsing binary files in the project's src/main/resources/certs directory, option C should be used. This option specifies that any files with .cer or .jks extensions under the certs directory should be excluded from filtering. Filtering is a process of replacing placeholders with actual values in resource files during the build process. Binary files should not be filtered because they may become corrupted or unusable. References:
https://maven.apache.org/plugins/maven-resources-plugin/examples/filter.html
https://maven.apache.org/plugins/maven-resources-plugin/examples/include-exclude.html
NEW QUESTION # 42
Refer to the exhibit.
A developer generates the base scaffolding for an API in Anypoint Studio.
Which HTTP status code is returned while testing using the API Kit console if no values are entered in client-secret?
- A. HTTP status code:400
- B. HTTP status code:500
- C. HTTP status code:200
- D. HTTP status code:403
Answer: D
Explanation:
Explanation
Based on the code snippet and schema.json file below, when testing using the API Kit console if no values are entered in client-secret, HTTP status code 403 (FORBIDDEN) is returned. This is because client-secret is defined as a required header parameter in schema.json file, which means that it must be present in every request. If no values are entered in client-secret, then it is equivalent to omitting this header parameter, which violates the schema and causes APIKit Router to return HTTP status code 403. References:
https://docs.mulesoft.com/apikit/4.x/apikit-4-headers
NEW QUESTION # 43
A Mule application uses API autodiscovery to access and enforce policies for a RESTful implementation.
- A. Northing because flowRef is an optional attribute which can be passed runtime
- B. The name of the flow that has HTTP listener to receive all incoming RESTful operation requests
- C. The name of the flow that has APlkit Console to receive all incoming RESTful operation requests.
- D. Any of the APIkit generate implement flows
Answer: B
Explanation:
Explanation
To use API autodiscovery to access and enforce policies for a RESTful implementation, flowRef must be set to the name of the flow that has HTTP listener to receive all incoming RESTful operation requests. This way, API autodiscovery can identify the API implementation and associate it with the corresponding API specification and policies in API Manager. The flow that has HTTP listener is usually the main flow that contains the APIKit Router. References:
https://docs.mulesoft.com/api-manager/2.x/api-auto-discovery-new-concept#flowref
NEW QUESTION # 44
A Mule application for processing orders must log the order ID for every log message output.
What is a best practice to enrich every log message with the order ID?
- A. Use flow variables within every logger processor to log the order ID
- B. Use the Tracing module to set logging variables with a Mapped Diagnostic Context
- C. Create a custom XML SDK component to wrap the logger processor and automatically add the order ID within the connector
- D. Set a flow variable and edit the log4/2.xml file to output the variable as part of the message pattern
Answer: B
Explanation:
Explanation
To enrich every log message with the order ID, the developer should use the Tracing module to set logging variables with a Mapped Diagnostic Context (MDC). The Tracing module allows adding custom key-value pairs to log messages using MDC variables. The developer can use Set Logging Variables operation to set the order ID as an MDC variable and then use it in any logger processor within the same thread or event.
References: https://docs.mulesoft.com/tracing-module/1.0/tracing-module-reference#set-logging-variables
NEW QUESTION # 45
Mule application A is deployed to CloudHub and is using Object Store v2. Mute application B is also deployed to CloudHub.
Which approach can Mule application B use to remove values from Mule application A'S Object Store?
- A. CloudHub REST API
- B. Object Store v2 REST API
- C. CloudHub Connector
- D. Object Store Connector
Answer: B
Explanation:
Explanation
To remove values from Mule application A's Object Store v2, Mule application B can use Object Store v2 REST API. This API allows performing operations on Object Store v2 resources using HTTP methods, such as GET, POST, PUT, and DELETE. Mule application B can use the DELETE method to remove values from Mule application A's Object Store v2 by specifying the object store ID and the key of the value to delete.
References: https://docs.mulesoft.com/object-store/osv2-apis
NEW QUESTION # 46
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