If a NIT has a closing rank of 1500.... Does that mean than that a student who got a rank a rank of 1500 has got a seat in that NIT?
It means that the closing rank or upto 1500 rank student can apply for this NIT
The seat are alloted from opening rank till the closing rank.
If seat get full in just few opening ank then other rank students apply in next counselling round.
Hope it help to you