Free Salesforce DEX660 Practice Exam Questions and Answers 2026

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Total 60 Questions | Updated On: Apr 01, 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

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?

A : nullPayload

B : originalPayload

C : OS:KEY_NOT_FOUND

D : testPayload

Answer: A

Question 3

Refer to the exhibit.

A developer generates the base scaffolding for an API in Anypoint Studio.

Which HTTP status code is returned while testing using the API Kit console if no values are entered in

client-secret?

A : HTTP status code:200

B : HTTP status code:403

C : HTTP status code:400

D : HTTP status code:500

Answer: B

Question 4

The flow is invoicing a target API. The API’s protocol is HTTPS. The TLS configuration in the HTTP

Request Configuration global element is set to None. A web client submits a request to

http:localhost:8081/vehicles.

If the certificate of the target API is signed by a certificate authority (CA), what is true about the HTTP

Request operation when the flow executes?

A : The HTTP Request operation will succeed if the CA’S certificate is present in the JRE’s default keystore

B : The HTTP Request operation will succeed if the CA’s certificate is present in the JRE’s default truststore.

C : The HTTP Request operation will always succeed regardless of the CA

D : The HTTP Request operation will always fail regardless of the CA

Answer: B

Question 5

An organization uses CloudHub to deploy all of its applications.

How can a common-global-handler flow be configured so that it can be reused across all of the organization’s

deployed applications?

A : Create a Mule plugin projectCreate a common-global-error-handler flow inside the plugin project.Use this plugin as a dependency in all Mute applications.Import that configuration file in Mute applications.

B : Create a common-global-error-handler flow in all Mule Applications Refer to it flow-ref whereverneeded.

C : Create a Mule Plugin projectCreate a common-global-error-handler flow inside the plugin project.Use this plugin as a dependency in all Mule applications

D : Create a Mule daman project.Create a common-global-error-handler flow inside the domain project.Use this domain project as a dependency.

Answer: C

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Total 60 Questions | Updated On: Apr 01, 2026

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