Salesforce Integration-Architect Exam With Confidence Using Practice Dumps

Middleware should coordinate request delivery and payment processing, and Payment System should process a payment request only once. This solution ensures that each payment request is delivered to the Payment System in a reliable and consistent manner,and avoids duplicate or conflicting updates to the same Payment Request record. Middleware can act as a mediator between the Data Entry Point and the Payment System, and implement logic to handle errors, retries, and acknowledgments. Payment System can usethe globally unique identifier to check if a payment request has already been processed, and avoid processing it again. References: Certification - Integration Architect- Trailhead, [Integration Patterns and Practices]

An API gateway is a component that acts as a single point of entry for all cloud applications to access on-premise resources and services. It can provide security, routing, transformation, and other features to facilitate integration. An API gateway component should be deployable behind a DMZ or perimeter network, which is a subnetwork that separates the internal network from the external network and provides an additional layer of security. The middleware solution should also be capable of establishing a secure API gateway between cloud applications and on-premise resources, which may involve using protocols such as HTTPS, SSL/TLS, or VPN. The OAuth security protocol is not a requirement for choosing a middleware solution, as it is a standard for authorizing access to resources on behalf of a user. The middleware solution’s ability to interface directly with databases via an ODBC connection string is also not a requirement, as it is a specific feature that may or may not be needed depending on the integration scenario. Reference: Salesforce Integration Architecture Designer Resource Guide, page 14-15

Option B is correct because platform events are published after the Apex transaction completes. Platform events are asynchronous messages that are published and consumed by different processes or systems. When an Apex transaction publishes a platform event, the event is not sent immediately, but rather added to a temporary queue. The event is only published and delivered to the subscribers after the Apex transaction commits successfully. This ensures that the event data is consistent with the database state and that the event is not lost in case of a rollback.

Option A is incorrect because platform events are not published immediately before the Apex transaction completes. As explained above, platform events are published after the Apex transaction commits successfully. Publishing events before the transaction completes can cause data inconsistency and event loss issues.

Option C is incorrect because platform events can have a trigger in Apex, but this is not related to the question of when events are published. A platform event trigger is a special type of Apex trigger that executes when a platform event message is received by Salesforce. A platform event trigger can perform logic based on the event data, such as updating records, sending notifications, or calling external services. A platform event trigger does not affect the publishing of events, but rather the consumption of events.

Option D is incorrect because platform events can be published from Apex, but this does not answer the question of when events are published. Platform events can be published from various sources, such as Apex code, Process Builder, Flows, or API calls. Publishing events from Apex requires creating an instance of a platform event object and using the EventBus.publish method to add it to the temporary queue. The actual publishing of events happens after the Apex transaction completes, regardless of the source of the events.