Title explains all
Depends on the other material on the board. K+N vs King, no.
If your opponent has a lonely king, then it is impossible. However with a bishop, rook or a knight for your opponent, it is possible!
Against a lone king, you can't even win with 2 knights, let alone one. You can win with a knight and bishop, but it's quite tricky and unless you know how to do it you may run into the 50 move rule https://www.youtube.com/watch?v=YFF5ibgB6eA
Yes.
FIXING = I said white is left with only Queen. What i mean of course is that white is left with only Knight.
Against a lone king, you can't even win with 2 knights, let alone one. You can win with a knight and bishop, but it's quite tricky and unless you know how to do it you may run into the 50 move rule https://www.youtube.com/watch?v=YFF5ibgB6eA
wrong!! one can win with two knights the opponent just has to help. beware the low rated for they know not what they think they know and say it with extreme authority
"the opponent just has to help" ... says it all.
Title explains all