Câu 22: S90.08: Advanced SOA Design Architecture (S90-08A)

Based on the publisher and subscriber roles established by the application of the Event-Driven Messaging pattern, which of the following statements are true?

1. A. a service, acting as a publisher, issues event notification messages to an event management program that is responsible for broadcasting the messages — đáp án hiện tại
2. B. a service consumer, acting as a subscriber, can selectively subscribe to specific events — đáp án hiện tại
3. C. an intermediate event management program enters the role of subscriber when accepting event subscriptions
4. D. upon receiving a message associated with an event that a service consumer subscribed to, the service consumer enters the publisher role