Your question is Why Activation Functions Matter. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Why do we use activation functions in neural networks?
Asked in the Onsite stage.
Answer this as a system design problem: explain how activation choices affect model capacity, training stability, serving behavior, and monitoring. Focus on where activations matter in an end-to-end ML pipeline, not just the math.