Naming a Design Problem Out Loud

In a low level design round you are rarely asked "what is the Open/Closed Principle?". You are asked to design a parking lot, or a rate limiter, or a file storage service. Then you are graded on something the question never mentions. Can you explain why your design is shaped the way it is?

That explanation is the difference between a candidate who has memorised five acronyms and one who uses them. This lesson is about producing it out loud.

What the Interviewer Is Listening For

Three things, in order of weight.