Machine Learning Interview in Big Companies

Hi, I don’t know if its the right place to ask that question. i researched a little bit about that but could not find a proper answer.

Do Big companies ask about Math formulas of DL/ML in the ML interviews? I’m not talking about Data science interviews.

Or do they ask to derive some formula or write formulas of some loss/optimization functions? Or write Backpropagation Mathematically?

Or do they need you to know just geometric Undestanding of different Linear Algebra/Calculus Topics? How does it work, why is it working like this and how would u use that in real-world scenarios?

Or Do they ask to compute some equation with formulas.