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Salesforce Mule-Dev-301 Exam Syllabus Topics:

Section	Weight	Objectives
Implement Monitorable Mule Applications	15%	- Implement logging and log management - Monitor applications and runtimes - Implement message correlation - Expose health check endpoints
Secure Data at Rest and in Transit	20%	- Implement security policies - Manage secure environment properties - Manage keys and certificates - Expose and invoke APIs over HTTPS
Design and Implement API-led Connectivity	13%	- Implement server-side caching - Implement API autodiscovery - Implement HTTP callbacks/webhooks
Implement Maintainable and Modular Mule Applications and Maven Builds	25%	- Build custom policies and processors - Modularize applications and builds - Create reusable libraries - Execute tests with Maven - Implement automated deployment
Implement Performant and Reliable Mule Applications	27%	- Handle HTTP API invocations and errors - Validate messages and payloads - Optimize performance and throughput - Implement reliable messaging patterns - Use ObjectStore for persistence

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

NEW QUESTION # 19
What is the MuleSoft recommended method to encrypt sensitive property data?

A. The encryption key should be identical for all environments and the sensitive data should be different for each environment
B. The encryption key should be different for each environment and the sensitive data should be the same for all environments
C. The encryption key should be identical for all environments
D. The encryption key and sensitive data should be different for each environment

Answer: D

Explanation:
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

NEW QUESTION # 20
What is the MuleSoft recommended method to encrypt sensitive property data?

A. The encryption key should be identical for all environments and the sensitive data should be different for each environment
B. The encryption key should be different for each environment and the sensitive data should be the same for all environments
C. The encryption key and sensitive data should be different for each environment
D. The encryption key and sensitive data should be the same for all environments

Answer: C

Explanation:
Secure property management should isolate development, test, staging, and production environments rather than allowing secrets from one environment to provide access to another. MuleSoft's Secure Configuration Properties model supports this by using environment-specific property files-for example dev.secure.yaml, sandbox.secure.yaml, and prod.secure.yaml-and resolving the appropriate file through an environment property.
Sensitive values such as passwords, API credentials, and private service configuration should therefore be environment-specific. Production credentials should not normally be reused in development or testing. The encryption key used to protect those values should likewise be independently managed rather than shared broadly across security boundaries. This limits the impact if a non-production key or properties file is exposed.
The Secure Properties Tool encrypts the sensitive values using a supplied key, while the Mule runtime receives the corresponding decryption key separately at deployment/runtime. MuleSoft also emphasizes protecting that key rather than embedding it directly in application configuration.
Accordingly, the Developer II security model represented by this question expects both different sensitive property values and different encryption keys across environments.
Reference topics: Secure Configuration Properties; environment-specific secure files; encryption keys; secret isolation; deployment security.
Official documentation: https://docs.mulesoft.com/anypoint-code-builder/int-create-secure-configs

NEW QUESTION # 21
Which configurations are required for HTTP Listener to enable mTLS authentication?

A. Set an appropriate truststore configuration and reconnection strategy for the listener
B. Set an appropriate keystore configuration and use persistent connections for the listener
C. Set an appropriate reconnection strategy and use persistent connections for the listener
D. Set an appropriate keystore and truststore configuration for the listener

Answer: D

Explanation:
Mutual TLS requires authentication in both directions. The Mule HTTP Listener acts as the TLS server, so it needs a keystore containing its private key and associated server certificate. This allows the listener to prove its identity to the connecting client.
For mTLS, the server must additionally authenticate the client certificate. Therefore, the TLS context also requires an appropriate truststore containing the certificate authorities or certificates that the application trusts when validating client certificates.
MuleSoft's TLS documentation provides a two-way authentication example for an HTTP Listener containing both < tls:trust-store > and < tls:key-store > inside the TLS context. MuleSoft's HTTP Listener documentation likewise states that HTTPS requires a keystore for the server and a truststore when two-way authentication is required.
Persistent connections affect HTTP connection reuse and performance, not certificate authentication. A reconnection strategy likewise does not provide the cryptographic identity material required for mTLS.
Therefore, an HTTP Listener configured for mutual TLS requires the correct keystore and truststore configuration.
Reference topics: Mule TLS Context; HTTP Listener HTTPS; keystores; truststores; mutual TLS/two-way authentication.
Official documentation: https://docs.mulesoft.com/mule-runtime/4.6/tls-configuration Official documentation: https://docs.mulesoft.com/http-connector/latest/http-listener-ref

NEW QUESTION # 22
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?

A. In 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
B. In case of a cache it, only the HTTP Caching policy is evaluating; then the cached response is returned to the caller
C. In case of a cache hit, both the OAuth and HTTP Caching policies are evaluated; then the cached response is returned to the caller
D. In 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

Explanation:
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

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. Configure retrying until a MULERETRY_EXHAUSTED error is raised or the API responds back with a successful response.
C. 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.
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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