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

Question 1

Two APIs are deployed to a two-node on-prem cluster. Due to a requirements change, the two APIs must communicate to exchange data asynchronously.

AIf the two APIs use the same domain, the VM Connector can be leveraged

BThe VM Connector is used to inter-application communication, so it is not possible to use the VM Connector

CInstead of using the VM Connector use <flow-ref>directly

DIt is not possible to use the VM Connector since the APIs are running in a cluster mode and each mode has it own set of VM Queues

Answer : A

To communicate asynchronously between two APIs deployed to a two-node on-prem cluster, the developer can use the VM Connector if the two APIs use the same domain. The VM Connector allows passing messages between different Mule applications within a single Mule runtime instance or across different instances using shared memory or persistent storage. If two APIs are deployed under the same domain, they can share resources such as VM queues and communicate asynchronously using VM Connector operations. Reference: https://docs.mulesoft.com/mule-runtime/4.3/vm-connector https://docs.mulesoft.com/mule-runtime/4.3/shared-resources

Question 2

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?

ACreate a dedicated endpoint that responds with the API status and reachability of the underlying systems

BCreate a dedicated endpoint that responds with the API status and health of the server

CUse an existing resource endpoint of the API

DCreate a dedicated endpoint that responds with the API status only

Answer : A

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. Reference: https://docs.mulesoft.com/mule-runtime/4.3/deployment-strategies#readiness-probes

Question 3

An API has been built to enable scheduling email provider. The front-end system does very little data entry validation, and problems have started to appear in the email that go to patients. A validate-customer'' flow is added validate the data.

What is he expected behavior of the 'validate-customer'' flow?

AIf only the email address Is invalid a VALIDATION.INVALID_EMAIL error is raised

BIf the email address is invalid, processing continues to see if the appointment data and customer name are also invalid

CIf the appointment date and customer name are invalid, a SCHEDULE:INVALID_APPOINTMENT_DATE error is raised

DIf all of the values are invalid the last validation error is raised:SCHEDULE:INVALID_CUSTOMER_NAME

Answer : A

The validate-customer flow uses an until-successful scope to validate each field of the customer data. The until-successful scope executes its processors until they succeed or exhausts the maximum number of retries. If any processor fails, it raises an error and stops executing the remaining processors. Therefore, if only the email address is invalid, a VALIDATION.INVALID_EMAIL error is raised and the validation of appointment date and customer name is skipped. Reference: https://docs.mulesoft.com/mule-runtime/4.3/until-successful-scope

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

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?

AChain together the test suites and test cases for Flow-1 and Flow-2

BUse ''Set Event to pass the input that is needed, and keep the test cases for Flow-1 and Flow-2 independent

CUse ''Before Test Case'' To collect data from Flow-1 test cases before running Flow-2 test cases

DUse 'After Test Case' to produce the data needed from Flow-1 test cases to pass to Flow-2 test cases

Answer : B

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. Reference: https://docs.mulesoft.com/munit/2.3/munit-test-flow

Question 6

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

Question 7

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