12 Patterns questions from the Message Queues bank, written for Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd.
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A.writing messages to a database table in the same transaction as state changes, then relaying them to avoid lost or dual-written events
B.a design where components communicate by emitting and reacting to notifications of state changes rather than direct calls
C.separating senders from receivers through an intermediary so neither needs the other to be available at the same moment
D.using a queue to absorb traffic spikes by holding work until slower consumers can drain it
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2. Which term means: "separating senders from receivers through an intermediary so neither needs the other to be available at the same moment"?
Junior
A.Outbox pattern
B.Buffering
C.Event-driven architecture
D.Decoupling
Answer + AI explanation with Pro
3. Which statement is correct?
Junior
A.Decoupling — using a queue to absorb traffic spikes by holding work until slower consumers can drain it
B.Decoupling — a design where components communicate by emitting and reacting to notifications of state changes rather than direct calls
C.Decoupling — separating senders from receivers through an intermediary so neither needs the other to be available at the same moment
D.Decoupling — writing messages to a database table in the same transaction as state changes, then relaying them to avoid lost or dual-written events
Answer + AI explanation with Pro
4. What is Event-driven architecture?
Mid
A.separating senders from receivers through an intermediary so neither needs the other to be available at the same moment
B.writing messages to a database table in the same transaction as state changes, then relaying them to avoid lost or dual-written events
C.using a queue to absorb traffic spikes by holding work until slower consumers can drain it
D.a design where components communicate by emitting and reacting to notifications of state changes rather than direct calls
Answer + AI explanation with Pro
5. Which term means: "a design where components communicate by emitting and reacting to notifications of state changes rather than direct calls"?
Mid
A.Outbox pattern
B.Event-driven architecture
C.Decoupling
D.Buffering
Answer + AI explanation with Pro
6. Which statement is correct?
Mid
A.Event-driven architecture — separating senders from receivers through an intermediary so neither needs the other to be available at the same moment
B.Event-driven architecture — writing messages to a database table in the same transaction as state changes, then relaying them to avoid lost or dual-written events
C.Event-driven architecture — using a queue to absorb traffic spikes by holding work until slower consumers can drain it
D.Event-driven architecture — a design where components communicate by emitting and reacting to notifications of state changes rather than direct calls
Answer + AI explanation with Pro
7. What is Buffering?
Mid
A.separating senders from receivers through an intermediary so neither needs the other to be available at the same moment
B.writing messages to a database table in the same transaction as state changes, then relaying them to avoid lost or dual-written events
C.using a queue to absorb traffic spikes by holding work until slower consumers can drain it
D.a design where components communicate by emitting and reacting to notifications of state changes rather than direct calls
Answer + AI explanation with Pro
8. Which term means: "using a queue to absorb traffic spikes by holding work until slower consumers can drain it"?
Mid
A.Outbox pattern
B.Buffering
C.Event-driven architecture
D.Decoupling
Answer + AI explanation with Pro
9. Which statement is correct?
Mid
A.Buffering — using a queue to absorb traffic spikes by holding work until slower consumers can drain it
B.Buffering — a design where components communicate by emitting and reacting to notifications of state changes rather than direct calls
C.Buffering — writing messages to a database table in the same transaction as state changes, then relaying them to avoid lost or dual-written events
D.Buffering — separating senders from receivers through an intermediary so neither needs the other to be available at the same moment
Answer + AI explanation with Pro
10. What is Outbox pattern?
Senior
A.using a queue to absorb traffic spikes by holding work until slower consumers can drain it
B.writing messages to a database table in the same transaction as state changes, then relaying them to avoid lost or dual-written events
C.a design where components communicate by emitting and reacting to notifications of state changes rather than direct calls
D.separating senders from receivers through an intermediary so neither needs the other to be available at the same moment
Answer + AI explanation with Pro
11. Which term means: "writing messages to a database table in the same transaction as state changes, then relaying them to avoid lost or dual-written events"?
Senior
A.Buffering
B.Decoupling
C.Event-driven architecture
D.Outbox pattern
Answer + AI explanation with Pro
12. Which statement is correct?
Senior
A.Outbox pattern — separating senders from receivers through an intermediary so neither needs the other to be available at the same moment
B.Outbox pattern — a design where components communicate by emitting and reacting to notifications of state changes rather than direct calls
C.Outbox pattern — writing messages to a database table in the same transaction as state changes, then relaying them to avoid lost or dual-written events
D.Outbox pattern — using a queue to absorb traffic spikes by holding work until slower consumers can drain it
Answer + AI explanation with Pro
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