Universal Containers (UC) is a leading provider of management training globally, UC requested students course registration data generated from the Salesforce student community to be synced with the learning management system (LMS). Any update to the course registration data needs to be reflected in the LMS.
Which integration mechanism should be used to meet the requirement?

An enterprise customer that has more than 10 Million customers has the following systems and conditions in their landscape:

Universal containers is building an integration between their instance of Salesforce and their business partner's fulfillment systems, the security officer would like to ensure that only the authorized data for each business partner is accessible across all interfaces.
How should the architect ensure this requirement is met?

Universal Containers (UC) has Salesforce integrated with their mainframe system. All the orders placed in Salesforce are sent to the mainframe system in a nightly batch process.
Which two capabilities are required for middleware to support this integration?

Which tool would an architect likely leverage while diagnosing issues with an inbound RESTful integration to Salesforce?