MuleSoft MCD-Level-2 Exam Practice Test Instant Access

Question 1

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?

AUse the underlying HTTP request of Anypoint MQ to set the 'X-CORRELATION_ID' header to the order ID

BSet a custom Anypoint MQ user property to propagate the order ID and set the correlation ID in the receiving applications.

CUse the default correlation ID, Anypoint MQ will sutomatically propagate it.

DWrap all Anypoint MQ Publish operations within a With CorrelationID scope from the Tracing module, setting the correlation ID to the order ID

Answer : D

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. Reference: 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

Question 2

What is the MuleSoft recommended method to encrypt sensitive property data?

AThe encryption key and sensitive data should be different for each environment

BThe encryption key should be identical for all environments

CThe encryption key should be identical for all environments and the sensitive data should be different for each environment

DThe encryption key should be different for each environment and the sensitive data should be the same for all environments

Answer : A

The MuleSoft recommended method to encrypt sensitive property data is to use the Secure Properties Tool that comes with Anypoint Studio. This tool allows encrypting properties files with a secret key and then decrypting them at runtime using the same key. The encryption key and sensitive data should be different for each environment to ensure security and avoid accidental exposure of sensitive data. Reference: https://docs.mulesoft.com/mule-runtime/4.3/secure-configuration-properties

Question 3

A Mule application need to invoice an API hosted by an external system to initiate a process. The external API takes anywhere between one minute and 24 hours to compute its process.

Which implementation should be used to get response data from the external API after it completes processing?

AUse an HTTP Connector to invoke the API and wait for a response

BUse a Scheduler to check for a response every minute

CUse an HTTP Connector inside Async scope to invoice the API and wait for a response

DExpose an HTTP callback API in Mule and register it with the external system

Answer : D

To get response data from the external API after it completes processing, the developer should expose an HTTP callback API in Mule and register it with the external system. This way, the external API can invoke the callback API with the response data when it is ready, instead of making the Mule application wait for a long time or poll for a response repeatedly. Reference: https://docs.mulesoft.com/mule-runtime/4.3/http-listener-ref#callback

Question 4

Which statement is true about using mutual TLS to secure an application?

AMutual TLS requires a hardware security module to be used

BMutual TLS authenticates the identity of the server before the identity of the client

CMutual TLS ensures only authorized end users are allowed to access an endpoint

DMutual TLS increases the encryption strength versus server-side TLS alone

Answer : B

Mutual TLS (mTLS) is an extension of TLS that requires both parties (client and server) to present their certificates to each other during the handshake process. This way, both parties can verify each other's identity and establish a secure connection. The authentication of the server happens before the authentication of the client, as the server sends its certificate first and then requests the client's certificate. Reference: https://docs.mulesoft.com/mule-runtime/4.3/tls-configuration#mutual-authentication

Question 5

A scatter-gather router is configured with four routes:Route A, B, C and D.

Route C false.

AError,errorMesage.payload.results ['2']

BPayload failures['2']

CError,errorMessage,payload.failures['2']

DPayload ['2']

Answer : C

The result of accessing route C failure is Error,errorMessage,payload.failures['2']. This is because a scatter-gather router returns an aggregated message that contains an array of results from each route and an array of failures from each route. The failures array contains error objects with information about each failed route execution. To access route C failure, which is the third route (index 2), the developer needs to use Error.errorMessage.payload.failures['2'] expression. Reference: https://docs.mulesoft.com/mule-runtime/4.3/scatter-gather-reference#scatter-gather-output

Question 6

When implementing a synchronous API where the event source is an HTTP Listener, a developer needs to return the same correlation ID back to the caller in the HTTP response header.

How can this be achieved?

AEnable the auto-generate CorrelationID option when scaffolding the flow

BEnable the CorrelationID checkbox in the HTTP Listener configuration

CConfigure a custom correlation policy

DNO action is needed as the correlation ID is returned to the caller in the response header by default

Answer : D

When implementing a synchronous API where the event source is an HTTP Listener, Mule automatically propagates some message attributes between flows via outbound and inbound properties. One of these attributes is correlation ID, which is returned to the caller in the response header by default as MULE_CORRELATION_ID. Reference: https://docs.mulesoft.com/mule-runtime/4.3/about-mule-message#message-attributes

Question 7

An API has been developed and deployed to CloudHub Among the policies applied to this API is an allowlist of IP addresses. A developer wants to run a test in Anypoint Studio and does not want any policies applied because their workstation is not included in the allowlist.

What must the developer do in order to run this test locally without the policies applied?

ACreate a properties file specifically for local development and set the API instance ID to a value that is not used in API Manager

BPass in the runtime parameter ''-Danpow.platform.gatekeeper=disabled''

CDeactivate the API in API Manager so the Autodiscovery element will not find the application when it runs in Studio

DRun the test as-s, with no changes because the Studio runtime will not attempt to connect to API Manager

Answer : A

To run a test locally without the policies applied, the developer should create a properties file specifically for local development and set the API instance ID to a value that is not used in API Manager. This way, the developer can use different configuration properties for different environments and avoid triggering API autodiscovery when running tests locally. API autodiscovery is a mechanism that associates an API implementation with its corresponding API specification and policies in API Manager based on its API instance ID. By setting this ID to a value that does not exist in API Manager, the developer can prevent API autodiscovery from finding and applying any policies to the local test. Reference: https://docs.mulesoft.com/api-manager/2.x/api-auto-discovery-new-concept#configuring-api-autodiscovery https://docs.mulesoft.com/mule-runtime/4.3/configuring-properties

MuleSoft MCD-Level-2 MuleSoft Certified Developer - Level 2 (Mule 4) Exam Practice Test