Free Salesforce DEX660 Exam Questions

Become Salesforce Certified with updated DEX660 exam questions and correct answers

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Total 60 Questions | Updated On: Mar 11, 2026

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Question 1

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?

A : Enable the auto-generate CorrelationID option when scaffolding the flow

B : Enable the CorrelationID checkbox in the HTTP Listener configuration

C : Configure a custom correlation policy

D : NO action is needed as the correlation ID is returned to the caller in the response header by default

Answer: D

Question 2

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?

A : Use an HTTP Connector to invoke the API and wait for a response

B : Use a Scheduler to check for a response every minute

C : Use an HTTP Connector inside Async scope to invoice the API and wait for a response

D : Expose an HTTP callback API in Mule and register it with the external system

Answer: D

Question 3

The HTTP Request operation raises an HTTP CONNECTIVITY error.

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

A : HTTP Status Code:200.Body ‘Error in processing your request

B : HTTP Status Code:500.Body ‘The HTTP CONNECTIVITY Error description

C : HTTP Status Code:500.Body ‘Error in processing your request

D : HTTP Status Code:500.Body ‘Error in processing your request

Answer: C

Question 4

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 hit, both the OAuth and HTTP Caching policies are evaluated; then the cachedresponse is returned to the caller

B : In case of a cache it, only the HTTP Caching policy is evaluating; then the cached response is returnedto the caller

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

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

Answer: B

Question 5

A scatter-gather router is configured with four routes:Route A, B, C and D.

Route C false.

A : Error,errorMesage.payload.results [‘2’]

B : Payload failures[‘2’]

C : Error,errorMessage,payload.failures[‘2’]

D : Payload [‘2’]

Answer: C

Page: 1 / 12

Total 60 Questions | Updated On: Mar 11, 2026

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