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?
Answer(s): 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.
https://docs.mulesoft.com/mule- runtime/4.3/about-mule-message#message-attributes
Which statement is true about using mutual TLS to secure an application?
Answer(s): 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.
https://docs.mulesoft.com/mule-runtime/4.3/tls-configuration#mutual- authentication
Which statement is true when using XML SDK for creating custom message processors?
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.
https://docs.mulesoft.com/mule-sdk/1.1/xml- sdk#operations
Which type of cache invalidation does the Cache scope support without having to write any additional code?
Answer(s): 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.
https://docs.mulesoft.com/mule-runtime/4.3/cache- scope#cache_invalidation
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