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Exam Questions MCD-Level-2 Vce, Latest MCD-Level-2 Test Pass4sure

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MuleSoft Certified Developer - Level 2 (Mule 4) Sample Questions (Q19-Q24):

NEW QUESTION # 19
A Mule application deployed to a standardalone Mule runtime uses VM queues to publish messages to be consumed asynchronously by another flow.
In the case of a system failure, what will happen to in-flight messages in the VM queues that have been consumed?

A. For any type of queue, the message will be lost
B. For persistent queues, the message will be processed after the system comes online
C. For nay type of queue, the message will be processed after the system comes online
D. For transient queues, the message will be processed after the system comes online

Answer: B

Explanation:
Explanation
In case of a system failure, in-flight messages in persistent VM queues that have been consumed will be processed after the system comes online. This is because persistent VM queues store messages on disk and guarantee delivery even if there is a system crash or restart. Therefore, any in-flight messages that have been consumed but not processed will be recovered from disk and processed when the system is back online.
References: https://docs.mulesoft.com/mule-runtime/4.3/vm-connector#persistent-queues

NEW QUESTION # 20
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. Set a flow variable and edit the log4/2.xml file to output the variable as part of the message pattern
B. Use the Tracing module to set logging variables with a Mapped Diagnostic Context
C. Use flow variables within every logger processor to log the order ID
D. Create a custom XML SDK component to wrap the logger processor and automatically add the order ID within the connector

Answer: B

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 # 21
Which pattern can a web API use to notify its client of state changes as soon as they occur?

A. Schedule Event Publisher
B. ETL data load
C. HTTP Webhock
D. Shared database trigger

Answer: C

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 # 22
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:500
B. HTTP status code:403
C. HTTP status code:400
D. HTTP status code:200

Answer: B

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 # 23
A Mule implementation uses a HTTP Request within an Unit Successful scope to connect to an API.
How should a permanent error response like HTTP:UNAUTHORIZED be handle inside Until Successful to reduce latency?

A. Put the HTTP Request inside a try scope in Unit Successful.
In the error handler, use On Error Continue to catch permanent errors like HTTP UNAUTHORIZED.
B. Configure retrying until a MULERETRY_EXHAUSTED error is raised or the API responds back with a successful response.
C. In Until Successful configuration, set the retry count to 1 for error type HTTP: UNAUTHORIZED.
D. Put the HTTP Request inside a try scope in Unit Successful.
In the error handler, use On Error Propagate to catch permanent errors like HTTP UNAUTHORIZED.

Answer: A

Explanation:
Explanation
To handle a permanent error response like HTTP:UNAUTHORIZED inside Until Successful, the developer should put the HTTP Request inside a try scope in Unit Successful, and use On Error Continue to catch permanent errors like HTTP UNAUTHORIZED in the error handler. This way, the developer can avoid retrying requests that will always fail due to a permanent error, and reduce latency. On Error Continue allows the flow to continue processing after handling the error. References:
https://docs.mulesoft.com/mule-runtime/4.3/until-successful-scope
https://docs.mulesoft.com/mule-runtime/4.3/on-error-continue-concept

NEW QUESTION # 24
......

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