No. 니 is the ending of the question of the 'formal impolite' speech level (also called 'written' or 'diary' speech level)
습니까 is the question ending of 'formal polite' speech level.
Although both serve the same role (creating questions), 니 is NOT a contracted form of 습니까 but an independent grammatical particle and they are used in different contexts
I am correct I will tell you guys answer Who shuts the door but there is no word close everyone but I imagine it is hard everyone but everyone I was easy about that guys I think it works when we write Who close the door it is easy everyone was it hard it was good and easy but every guys are a little bit hard everyone I imagine this is a hard question