Câu 8: Salesforce Certified Integration Architect

A business requires automating the check and updating of the phone number type classification (mobile vs. landline) for all incoming calls delivered to its phone sales agents. The following conditions exist:1. At peak, the call center can receive up to 100,000 calls per day.2. The phone number type classification is a service provided by an external service API.3. Business is flexible with timing and frequency to check and update the records (throughout the night or every 6-12 hours is sufficient). A Remote-Call-In pattern and/or Batch Synchronization (Replication via ETL: System -> Salesforce) are determined to work with a middleware hosted on customer premise. In order to implement these patterns and mechanisms, which component should an integration architect recommend?

1. A. Configure Remote Site Settings in Salesforce to authenticate the middleware.
2. B. Firewall and reverse proxy are required to protect internal APIs and resources being exposed.
3. C. ConnectedApp configured in Salesforce to authenticate the middleware. — đáp án hiện tại
4. D. An API Gateway that authenticates requests from Salesforce into the middleware (ETL/ESB).