Salesforce Certified MuleSoft Developer II (Mule-Dev-301) Exam Questions Instant Access

Question 1

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 : A

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 2

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 3

A new Mule project has been created in Anypoint Studio with the default settings.

Which file inside the Mule project must be modified before using Maven to successfully deploy the application?

ASettings.xml

BConfig.yaml

CPom.xml

DMule.artificact.json

Answer : C

To use Maven to successfully deploy the application, the developer needs to modify the pom.xml file inside the Mule project. The pom.xml file contains the configuration and dependencies of the Mule application, as well as the deployment information such as the CloudHub region, environment, and worker size. The developer needs to specify these properties in the pom.xml file before using Maven to deploy the application. Reference: https://docs.mulesoft.com/mule-runtime/4.3/mmp-concept#application-deployment-descriptor

Question 4

Which type of cache invalidation does the Cache scope support without having to write any additional code?

AWrite-through invalidation

BWhite-behind invalidation

CTime to live

DNotification-based invalidation

Answer : C

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. Reference: https://docs.mulesoft.com/mule-runtime/4.3/cache-scope#cache_invalidation

Question 5

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?

AThe HTTP Request operation will succeed if the CA'S certificate is present in the JRE's default keystore

BThe HTTP Request operation will succeed if the CA's certificate is present in the JRE's default truststore.

CThe HTTP Request operation will always succeed regardless of the CA

DThe HTTP Request operation will always fail regardless of the CA

Answer : B

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. Reference: https://docs.mulesoft.com/mule-runtime/4.3/tls-configuration#tls-default

Question 6

A custom policy needs to be developed to intercept all cutbound HTTP requests made by Mule applications.

Which XML element must be used to intercept outbound HTTP requests?

AIt is not possible to intercept outgoing HTTP requests, only inbound requests

Bhttp-policy:source

Chtt-policy:operation

Dhttp-policy:processor

Answer : B

The http-policy:processor element is used to intercept outbound HTTP requests made by Mule applications. It allows customizing the request before it is sent to the target API and modifying the response after it is received from the target API. Reference: https://docs.mulesoft.com/api-manager/2.x/policy-mule4-custom-policy#policy-xml-file

Question 7

A healthcare portal needs to validate the token that it sends to a Mule API. The developer plans to implement a custom policy using the HTTP Policy Transform Extension to match the token received in the header from the heathcare portal.

Which files does the developer need to create in order to package the custom policy?

ADeployable ZIP file, YAML configuration file

BJSON properties file, YAML configuration file

CJSON properties file, XML template file

DXML template file, YAML configuration file

Answer : D

To package a custom policy using the HTTP Policy Transform Extension, the developer needs to create an XML template file and a YAML configuration file. The XML template file defines the policy logic using Mule components and placeholders for user-defined properties. The YAML configuration file defines the metadata of the policy, such as its name, description, category, parameters, and dependencies. Reference: https://docs.mulesoft.com/api-manager/2.x/http-policy-transform#packaging-the-policy