Which CAP feature allows real-time data synchronization and communication between different parts of an application or with external systems?

Question

Options

• ADatabase Connectivity
• BService Connectivity
• CService Extensibility
• DMessage Queues and Event Brokers

• A
  2% (1)
• B
  4% (2)
• D
  93% (42)

Explanation

Message Queues and Event Brokers (D) is correct because this CAP feature specifically enables asynchronous, event-driven communication - allowing different application components or external systems to exchange data in real time without tight coupling, using technologies like SAP Event Mesh or Apache Kafka.

Why the distractors are wrong:

• A. Database Connectivity handles persistent data storage and retrieval, not inter-component communication or synchronization.
• B. Service Connectivity deals with calling external APIs or services (e.g., REST/OData), which is request/response-based, not real-time event-driven sync.
• C. Service Extensibility is about adding custom logic or handlers to existing services, not communication between systems.

Memory tip: Think "real-time = events = queue/broker." Whenever a question mentions synchronization, broadcasting, or communication between parts, map it to the pub/sub pattern that message queues and event brokers implement - not connectivity (which is about access) or extensibility (which is about customization).

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