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Salesforce Mule-Dev-301 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Implement Performant and Reliable Mule Applications	27%	- Optimize reliability and performance 1. Build fault-tolerant message processing 2. Implement ObjectStore persistence 3. Implement performant API invocations 4. Validate assertions using validation modules 5. Implement asynchronous processing
Topic 2: Implement Monitorable Mule Applications	15%	- Implement monitoring and logging 1. Implement monitoring dashboards and alerts 2. Change log levels dynamically 3. Expose health check endpoints 4. Configure and evaluate application logs
Topic 3: Secure Data at Rest and in Transit	20%	- Implement security best practices 1. Implement secure property management 2. Expose APIs over HTTPS 3. Implement TLS mutual authentication 4. Secure sensitive data in Mule applications 5. Create and distribute certificates and keys
Topic 4: Expose Production-Ready Anypoint Platform Managed APIs	13%	- Manage APIs with Anypoint Platform 1. Implement server-side API caching 2. Request and manage API access 3. Implement API versioning 4. Configure API policies 5. Implement HTTP callbacks
Topic 5: Implement Maintainable and Modular Mule Applications and Their Maven Builds	25%	- Implement modular Mule application structures 1. Execute MUnit tests with Maven 2. Optimize Maven build configurations 3. Implement unit testing with MUnit framework 4. Implement Maven-based automated deployments 5. Create custom API rules

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Salesforce Certified MuleSoft Developer II Sample Questions (Q19-Q24):

NEW QUESTION # 19
Refer to the exhibit.

A Mule application pom.xml configures the Maven Resources plugin to exclude parsing binary files in the project's src/main/resources/certs directory.
Which configuration of this plugin achieves a successful build?

Answer: C

Explanation:
To configure the Maven Resources plugin to exclude parsing binary files in the project's src/main/resources/certs directory, option C should be used. This option specifies that any files with .cer or .jks extensions under the certs directory should be excluded from filtering. Filtering is a process of replacing placeholders with actual values in resource files during the build process. Binary files should not be filtered because they may become corrupted or unusable. Reference: https://maven.apache.org/plugins/maven-resources-plugin/examples/filter.html https://maven.apache.org/plugins/maven-resources-plugin/examples/include-exclude.html

NEW QUESTION # 20
Which statement is true about using mutual TLS to secure an application?

A. Mutual TLS authenticates the identity of the server before the identity of the client
B. Mutual TLS ensures only authorized end users are allowed to access an endpoint
C. Mutual TLS requires a hardware security module to be used
D. Mutual TLS increases the encryption strength versus server-side TLS alone

Answer: A

Explanation:
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

NEW QUESTION # 21
Refer to the exhibit.
What required changes can be made to give a partial successful response in case the United Airlines API returns with a timeout?
Exhibit:

A. Add Flow Reference components inside a Try scope. Set the payload to a default value "" inside the error handler using the On Error Continue scope.
B. Add a Scatter-Gather component inside a Try Scope. Set the payload to a default value "Error" inside the error handler using the On Error Propagate scope.
C. Add a Scatter-Gather component inside a Try Scope. Set the payload to a default value "Error" inside the error handler using the On Error Continue scope.
D. Add Flow Reference components inside a Try Scope. Set the payload to a default value "" inside the error handler using the On Error Propagate scope.

Answer: A

Explanation:
Scatter-Gather normally expects all routes to complete successfully before combining their results. If the United Airlines route times out and that error escapes the route, Scatter-Gather raises a MULE:
COMPOSITE_ROUTING error instead of continuing normally to the downstream Transform Message. That behavior prevents the required partial-success response.
The correct design is to handle failure inside the affected Scatter-Gather route. Each Flow Reference can be wrapped in a Try scope, with the timeout or relevant connector error handled using On Error Continue. The handler can replace the failed route's payload with a neutral/default value such as an empty string. The route is then considered successfully handled, allowing Scatter-Gather to consolidate the successful Delta response and the default United value and proceed to the concatenation step.
MuleSoft documents this exact Scatter-Gather behavior: when a route's Try scope successfully handles an error with on-error-continue, Scatter-Gather completes and passes the combined events onward. If on-error- propagate is used, the route remains failed and Scatter-Gather produces a composite-routing error.
Reference topics: Scatter-Gather Router; Try Scope; On Error Continue; partial results; MULE:
COMPOSITE_ROUTING.
Official documentation: https://docs.mulesoft.com/mule-runtime/4.3/scatter-gather-concept

NEW QUESTION # 22
Which type of cache invalidation does the Cache scope support without having to write any additional code?

A. Write-through invalidation
B. Notification-based invalidation
C. Write-behind invalidation
D. Time to live

Answer: D

Explanation:
Mule's Cache scope is backed by a caching strategy, commonly using an Object Store. The caching strategy can directly configure expiration characteristics, including entry time to live (TTL). Once the TTL expires and the corresponding expiration processing occurs, cached entries are removed according to the configured Object Store policy without requiring application-specific invalidation logic.
MuleSoft's cache strategy documentation shows that the Object Store used by a caching strategy can define values such as entryTtl, expirationInterval, and maximum entries. A Cache component can then reference that strategy and automatically use those expiration settings.
Write-through and write-behind describe cache/database synchronization strategies in which cache updates are coordinated with writes to an underlying persistent data source. Mule's standard Cache scope does not automatically implement those patterns as an invalidation mode. Notification-based invalidation would similarly require external notification logic or explicit Mule processing to identify and invalidate affected keys.
TTL requires no such custom invalidation workflow. The developer establishes the lifetime when configuring the caching Object Store, after which Mule manages expiration automatically.
Therefore, Time to live is the cache invalidation mechanism directly available through standard Cache scope configuration.
Reference topics: Cache Scope; Object Store Caching Strategy; entryTtl; expirationInterval; automatic cache expiration.
Official documentation: https://docs.mulesoft.com/mule-runtime/latest/cache-scope-strategy

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. In Until Successful configuration, set the retry count to 1 for error type HTTP: UNAUTHORIZED.
B. 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.
C. Configure retrying until a MULERETRY_EXHAUSTED error is raised or the API responds back with a successful response.
D. 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.

Answer: D

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. Reference: 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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