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

Question 1

A Mule application defines as SSL/TLS keystore properly 'tis,keystore.keyPassword'' as secure.

How can this property be referenced to access its value within the application?

A#{secure::tiskeystore,keyPassowrd}

B${secure::tiskeystore,keyPassowrd}

C${secure::tiskeystore,keyPassowrd}

Dp{secure::tiskeystore,keyPassowrd}

Answer : B

secure::tiskeystore,keyPassowrdShortExplanationofCorrectAnswerOnly:Toreferenceasecurepropertyvaluewithintheapplication,thedeveloperneedstousethesyntax{secure::}. In this case, the property name is tiskeystore,keyPassword, so the correct syntax is ${secure::tiskeystore,keyPassowrd}. Reference: https://docs.mulesoft.com/mule-runtime/4.3/secure-configuration-properties#referencing-secure-properties

Question 2

Refer to the exhibit.

A Mute Object Store is configured with an entry TTL of one second and an expiration interval of 30 seconds.

What is the result of the flow if processing between os'store and os:retrieve takes 10 seconds?

AnullPayload

BoriginalPayload

COS:KEY_NOT_FOUND

DtestPayload

Answer : A

The result of the flow is nullPayload if processing between os:store and os:retrieve takes 10 seconds. This is because the entry TTL of the object store is one second, which means that any stored value expires after one second and is removed from the object store. The expiration interval of 30 seconds only determines how often the object store checks for expired values, but it does not affect the TTL. Therefore, when os:retrieve tries to get the value after 10 seconds, it returns nullPayload because the value has already expired and been removed. Reference: https://docs.mulesoft.com/object-store/osv2-faq#how-does-the-time-to-live-work

Question 3

The HTTP Request operation raises an HTTP CONNECTIVITY error.

Which HTTP status code and body are returned to the web client?

AHTTP Status Code:200.
Body 'Error in processing your request

BHTTP Status Code:500.
Body 'The HTTP CONNECTIVITY Error description

CHTTP Status Code:500.
Body 'Error in processing your request

DHTTP Status Code:500.
Body 'Error in processing your request

Answer : C

When the HTTP Request operation raises an HTTP CONNECTIVITY error, it triggers an on-error-continue handler that sets a payload with 'Error in processing your request'. Since no status code is explicitly set in this handler, it defaults to 500 (INTERNAL SERVER ERROR). Therefore, the web client receives an HTTP response with status code 500 and body 'Error in processing your request'. Reference: https://docs.mulesoft.com/mule-runtime/4.3/error-handling#on-error-continue

Question 4

Which statement is true when using XML SDK for creating custom message processors?

AProperties are fields defined by an end user of the XML SDK component and serve as a global configuration for the entire Mule project in which they are used

BAn XML SDK provides both inbound and outbound operations

COperations can be reused in recursive calls

DAll operations are public

Answer : A

When using XML SDK for creating custom message processors, all operations are public by default and can be used by any Mule application that imports them. There is no way to make an operation private or protected in XML SDK. Reference: https://docs.mulesoft.com/mule-sdk/1.1/xml-sdk#operations

Question 5

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 6

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 7

A developer deploys an API to CloudHub and applies an OAuth policy on API Manager. During testing, the API response is slow, so the developer reconfigures the API so that the out-of-the-box HTTP Caching policy is applied first, and the OAuth API policy is applied second.

What will happen when an HTTP request is received?

AIn case of a cache hit, both the OAuth and HTTP Caching policies are evaluated; then the cached response is returned to the caller

BIn case of a cache it, only the HTTP Caching policy is evaluating; then the cached response is returned to the caller

CIn case of a cache miss, only the HTTP Caching policy is evaluated; then the API retrieves the data from the API implementation, and the policy stores the data to be cached in Object Store

DIn case of a cache miss, both the OAuth and HTTP Caching policies are evaluated; then the API retrieves the data from the API implementation, and the policy does not store the data in Object Store

Answer : B

When an HTTP request is received and the HTTP Caching policy is applied first, it checks if there is a cached response for that request in Object Store. If there is a cache hit, meaning that a valid cached response exists, then only the HTTP Caching policy is evaluated and the cached response is returned to the caller without invoking the OAuth policy or the API implementation. If there is a cache miss, meaning that no valid cached response exists, then both the HTTP Caching policy and the OAuth policy are evaluated before invoking the API implementation. Reference: https://docs.mulesoft.com/api-manager/2.x/http-caching-policy#policy-ordering