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Walk me through what happens between a user pressing send and the model's answer appearing. What does a PM need to know?

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A fluency question about the request path. The interviewer does not need the maths; they want to know you can connect each stage to latency, cost and design decisions.

Updated Oct 2026 · Original practice questions with worked answers and teaching rubrics. Our editorial policy explains the sources, review process and limits.

A fluency question about the request path. The interviewer does not need the maths; they want to know you can connect each stage to latency, cost and design decisions.

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