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System Design · interview question

What does a strong engineer do when reasoning through choosing the model code?

Multiple choiceHardchapter-15-curatedpremiumsystem-designchoosing-the-model
python
def choose_execution_model(io_heavy: bool, cpu_heavy: bool) -> str:
    if io_heavy:
        return "asyncio or threads"
    if cpu_heavy:
        return "processes"
    return "simple synchronous code"
Choose one answer
Answer and explanation

Correct answer

D. Narrate the data shape, the state changes, and the exact rule order step by step.

Why

Interviewers often use simple code to test whether you can reason through execution without bluffing.

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