Event-Driven Architectures CV0-004 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   Which statement best describes the core principle of an event-driven architecture?

   • AEach component runs on a fixed schedule and processes data at predetermined times.
   • BAll components share a common database to coordinate their actions.
   • CComponents communicate by continuously polling each other for state changes.
   • DComponents react to occurrences (events) that are produced and consumed asynchronously.
   Reveal Solution Discussion Select an answer first
2. 17foundation · easy

   Which of the following is a common method for handling events in a cloud application?

   • ASending events via email to a human operator.
   • BStoring events in a relational database for later batch processing.
   • CUsing a serverless function triggered by the event.
   • DIgnoring events that cannot be processed immediately.
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4. 18foundation · easy

   How does an event broker facilitate communication between producers and consumers?

   • ABy requiring producers and consumers to know each other's network addresses.
   • BBy using a publish/subscribe model where consumers subscribe to topics.
   • CBy storing events in a shared database that both parties access.
   • DBy translating events into API calls between services.
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5. 19foundation · easy

   How do microservices typically communicate in an event-driven architecture?

   • ABy using remote procedure calls (RPC) directly.
   • BBy sharing a common database.
   • CBy making synchronous HTTP calls to each other.
   • DBy publishing and subscribing to events through a broker.
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6. 20application · medium

   A media company's video processing pipeline uses an event-driven architecture. When a new video is uploaded, an event triggers a series of processing steps. The processing load varies significantly based on upload volume. How does the event-driven design help the company handle variable load efficiently?

   • AIt requires all processing services to run on a fixed number of instances to maintain consistency.
   • BIt eliminates the need for scaling because the broker handles all processing.
   • CIt allows the processing services to scale independently based on the number of events in the queue.
   • DIt ensures that all events are processed synchronously to avoid backlog.
   Reveal Solution Discussion Select an answer first