Foundations of Event-Driven Architecture Quiz

1. Basic Concept of Event-Driven Architecture

   Which of the following best describes Event-Driven Architecture?

   1. An architecture where components communicate by emitting and responding to events
   2. A system that only uses scheduled tasks to execute actions
   3. A design where components talk directly using static method calls
   4. An approach based solely on database triggers
   5. A centralized system where all messages pass through a single controller

2. Understanding Events

   In the context of Event-Driven Architecture, what is an event?

   1. A signal indicating that a particular action has taken place within the system
   2. A timer that is scheduled to repeat at regular intervals
   3. A static configuration file for system setup
   4. A type of permanent database record
   5. An error that causes system shutdown

3. Role of Event Producers

   Which statement best explains the role of an event producer in Event-Driven Architecture?

   1. It creates and emits events whenever specific actions occur
   2. It logs all system activities for future reference
   3. It stores all events in a relational database
   4. It consumes and processes incoming events from other services
   5. It deletes outdated events from the system

4. Event Consumers

   What does an event consumer do in an event-driven system?

   1. It listens for and processes events generated by producers
   2. It designs the layout of the central database
   3. It enforces security policies for users
   4. It manages network traffic between multiple servers
   5. It schedules regular maintenance downtimes

5. Benefits of Loose Coupling

   Why is loose coupling important in Event-Driven Architecture?

   1. It enables system components to evolve independently
   2. It prevents any need for system monitoring
   3. It guarantees there will be no errors at runtime
   4. It eliminates the need for data storage
   5. It ensures all messages are encrypted

6. Example Scenario: Event Publication

   If a payment is processed and an event called 'PaymentCompleted' is published, what might a subscribing consumer do?

   1. Send a confirmation email to the user
   2. Delete all payment records
   3. Ignore all further payments
   4. Shutdown the payment processing system
   5. Rename the user account automatically

7. Common Communication Channels

   Which of the following is typically used for communication between components in Event-Driven Architecture?

   1. Event channels or message queues
   2. Static HTML files
   3. Direct function calls across all components
   4. Physical mail delivery
   5. Binary search trees

8. Event Types

   Which is an example of an event in an e-commerce system?

   1. OrderPlaced
   2. ShoppingList
   3. CustomerProfile
   4. UserNmaeUpdated
   5. StockkCheck

9. Decoupling and Flexibility

   How does Event-Driven Architecture support system flexibility?

   1. By allowing new consumers to be added without modifying event producers
   2. By enforcing a single workflow for every process
   3. By rejecting any changes once the system is deployed
   4. By centralizing all logic in one module
   5. By deleting events after a fixed time

10. Drawback Awareness

    What is a potential challenge when implementing Event-Driven Architecture?

    1. It can make it harder to trace how events flow through the system
    2. All system actions must occur at the same time
    3. It forces the use of only one programming language
    4. Events cannot be stored for auditing purposes
    5. It eliminates the concept of error handling