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In event-driven design, what triggers the flow of the system?

easy๐Ÿง  Conceptual Q1 of Q15
LLD - Advanced LLD Concepts
In event-driven design, what triggers the flow of the system?
AA fixed schedule timer
BEvents generated by user actions or system changes
CManual code execution only
DDirect function calls without events
Step-by-Step Solution
Solution:
  1. Step 1: Understand event-driven design basics

    Event-driven systems rely on events as triggers to start processes or actions.
  2. Step 2: Identify what triggers system flow

    Events can be user actions, system changes, or messages that cause the system to react.
  3. Final Answer:

    Events generated by user actions or system changes -> Option B
  4. Quick Check:

    Event trigger = Events [OK]
Quick Trick: Events start actions, not timers or manual calls [OK]
Common Mistakes:
MISTAKES
  • Confusing events with timers
  • Thinking manual calls trigger events
  • Assuming direct calls replace events

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