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Define the initial phase of a System Design interview by practicing requirement gathering and problem scoping. Learn to identify critical functional and non-functional requirements for complex systems. Practice asking clarifying questions about data load and constraints to successfully scope the design problem.

Identifying system requirements

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Identifying System Requirements

You are in a System Design interview. The interviewer presents an open-ended question, such as: “Design a video streaming service like YouTube.”

Your task is to identify:

  • Two functional requirements (what the system does) and
  • Two non-functional requirements (how the system performs).
This is your last attempt.

Scoping the problem

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Scoping the Video Streaming Design Problem

After identifying requirements for a video streaming service in the previous step, your next task is to ask two clarifying questions from the interviewer to scope the problem (specifically regarding data characteristics or user load).

This is your last attempt.