1. What is Message Queue ? Junior A. a buffer that decouples producers and consumers by holding messages until processed B. a guarantee that a message is delivered one or more times, requiring idempotent consumers C. a period during which a received message is hidden from other consumers while processed D. a design where components react to emitted events rather than direct synchronous calls
2. Which term means: "a buffer that decouples producers and consumers by holding messages until processed"? Junior A. At-Least-Once Delivery B. Visibility Timeout C. Message Queue D. Exactly-Once Processing
3. Which statement is correct? Junior A. Message Queue — ensuring each message affects system state a single time despite retries or duplicates B. Message Queue — a buffer that decouples producers and consumers by holding messages until processed C. Message Queue — slowing or buffering producers when consumers cannot keep up with the message rate D. Message Queue — a period during which a received message is hidden from other consumers while processed
4. What is Publish-Subscribe ? Junior A. a pattern where publishers send messages to topics that fan out to many subscribers B. a buffer that decouples producers and consumers by holding messages until processed C. ensuring each message affects system state a single time despite retries or duplicates D. slowing or buffering producers when consumers cannot keep up with the message rate
5. Which term means: "a pattern where publishers send messages to topics that fan out to many subscribers"? Junior A. Publish-Subscribe B. Exactly-Once Processing C. Backpressure D. At-Least-Once Delivery
6. Which statement is correct? Junior A. Publish-Subscribe — slowing or buffering producers when consumers cannot keep up with the message rate B. Publish-Subscribe — ensuring each message affects system state a single time despite retries or duplicates C. Publish-Subscribe — a period during which a received message is hidden from other consumers while processed D. Publish-Subscribe — a pattern where publishers send messages to topics that fan out to many subscribers
7. What is At-Least-Once Delivery ? Mid A. a period during which a received message is hidden from other consumers while processed B. a pattern where publishers send messages to topics that fan out to many subscribers C. a guarantee that a message is delivered one or more times, requiring idempotent consumers D. slowing or buffering producers when consumers cannot keep up with the message rate
8. Which term means: "a guarantee that a message is delivered one or more times, requiring idempotent consumers"? Mid A. Visibility Timeout B. Message Queue C. Message Ordering D. At-Least-Once Delivery
9. Which statement is correct? Mid A. At-Least-Once Delivery — a period during which a received message is hidden from other consumers while processed B. At-Least-Once Delivery — a guarantee that a message is delivered one or more times, requiring idempotent consumers C. At-Least-Once Delivery — slowing or buffering producers when consumers cannot keep up with the message rate D. At-Least-Once Delivery — a design where components react to emitted events rather than direct synchronous calls
10. What is Visibility Timeout ? Mid A. a guarantee that a message is delivered one or more times, requiring idempotent consumers B. a design where components react to emitted events rather than direct synchronous calls C. ensuring each message affects system state a single time despite retries or duplicates D. a period during which a received message is hidden from other consumers while processed
11. Which term means: "a period during which a received message is hidden from other consumers while processed"? Mid A. Publish-Subscribe B. At-Least-Once Delivery C. Visibility Timeout D. Backpressure
12. Which statement is correct? Mid A. Visibility Timeout — a period during which a received message is hidden from other consumers while processed B. Visibility Timeout — a buffer that decouples producers and consumers by holding messages until processed C. Visibility Timeout — a pattern where publishers send messages to topics that fan out to many subscribers D. Visibility Timeout — ensuring each message affects system state a single time despite retries or duplicates
13. What is Event-Driven Architecture ? Mid A. preserving the sequence in which messages are produced when they are consumed B. a buffer that decouples producers and consumers by holding messages until processed C. ensuring each message affects system state a single time despite retries or duplicates D. a design where components react to emitted events rather than direct synchronous calls
14. Which term means: "a design where components react to emitted events rather than direct synchronous calls"? Mid A. Message Queue B. At-Least-Once Delivery C. Event-Driven Architecture D. Backpressure
15. Which statement is correct? Mid A. Event-Driven Architecture — a pattern where publishers send messages to topics that fan out to many subscribers B. Event-Driven Architecture — ensuring each message affects system state a single time despite retries or duplicates C. Event-Driven Architecture — a design where components react to emitted events rather than direct synchronous calls D. Event-Driven Architecture — a guarantee that a message is delivered one or more times, requiring idempotent consumers
16. What is Exactly-Once Processing ? Senior A. slowing or buffering producers when consumers cannot keep up with the message rate B. a design where components react to emitted events rather than direct synchronous calls C. ensuring each message affects system state a single time despite retries or duplicates D. preserving the sequence in which messages are produced when they are consumed
17. Which term means: "ensuring each message affects system state a single time despite retries or duplicates"? Senior A. Event-Driven Architecture B. Exactly-Once Processing C. Message Ordering D. Publish-Subscribe
18. Which statement is correct? Senior A. Exactly-Once Processing — preserving the sequence in which messages are produced when they are consumed B. Exactly-Once Processing — a pattern where publishers send messages to topics that fan out to many subscribers C. Exactly-Once Processing — ensuring each message affects system state a single time despite retries or duplicates D. Exactly-Once Processing — a design where components react to emitted events rather than direct synchronous calls
19. What is Message Ordering ? Senior A. a guarantee that a message is delivered one or more times, requiring idempotent consumers B. preserving the sequence in which messages are produced when they are consumed C. slowing or buffering producers when consumers cannot keep up with the message rate D. a period during which a received message is hidden from other consumers while processed
20. Which term means: "preserving the sequence in which messages are produced when they are consumed"? Senior A. Publish-Subscribe B. Message Queue C. Message Ordering D. Exactly-Once Processing
21. Which statement is correct? Senior A. Message Ordering — ensuring each message affects system state a single time despite retries or duplicates B. Message Ordering — preserving the sequence in which messages are produced when they are consumed C. Message Ordering — slowing or buffering producers when consumers cannot keep up with the message rate D. Message Ordering — a guarantee that a message is delivered one or more times, requiring idempotent consumers
22. What is Backpressure ? Senior A. ensuring each message affects system state a single time despite retries or duplicates B. slowing or buffering producers when consumers cannot keep up with the message rate C. a period during which a received message is hidden from other consumers while processed D. a design where components react to emitted events rather than direct synchronous calls
23. Which term means: "slowing or buffering producers when consumers cannot keep up with the message rate"? Senior A. Backpressure B. Message Ordering C. Event-Driven Architecture D. Visibility Timeout
24. Which statement is correct? Senior A. Backpressure — a guarantee that a message is delivered one or more times, requiring idempotent consumers B. Backpressure — a design where components react to emitted events rather than direct synchronous calls C. Backpressure — slowing or buffering producers when consumers cannot keep up with the message rate D. Backpressure — ensuring each message affects system state a single time despite retries or duplicates