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Which of the following best describes a use case in system design?

easy🧠 Conceptual Q12 of 15
LLD - Design — Library Management System
Which of the following best describes a use case in system design?
AA scenario showing user interaction with the system
BA code module for user authentication
CA diagram of system architecture
DA detailed list of system features
Step-by-Step Solution
Solution:
  1. Step 1: Define use case

    A use case is a story or scenario describing how a user uses the system.
  2. Step 2: Eliminate unrelated options

    System features list, architecture diagrams, and code modules are not use cases.
  3. Final Answer:

    A scenario showing user interaction with the system -> Option A
  4. Quick Check:

    Use case = user scenario [OK]
Quick Trick: Use case = user story or interaction example [OK]
Common Mistakes:
MISTAKES
  • Mixing use cases with system features
  • Confusing use cases with technical diagrams
  • Thinking use cases are code components

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