1.
1♦ is not a noise, but has a reason to bid.
2.
After opening 2N, you get to play 3♠.
You get a spade lead to the king and ace.
Plan the play.
3.
(1♣)*-1♦-P-?
1♣ was precision, pass by RHO was 0-5.
1♠ promised an unbalanced hand. Your options are:
- 3♥ or 3♠, both forcing showing slam interest
- 4♦ splinter
- 2♦ artificial game force. Initially starts choice of game search but does not deny slam interest.
4.
(1♣)*-1♦-P-?
1♣ was precision, pass by RHO was 0-5.
4♣ was fit-showing, forcing, but does not establish a forcing pass.
5. After two passes at all red, RHO opens 1N. You pass ♠KQ87 ♥K2 ♦QT532 ♣K7 (agree?) and partner reopens with double=spades and another. What now? (2-level is pass/correct, 2N would ask for 2nd suit and show game interest.)

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(1♣)*-1♦-P-?
1♣ was precision, pass by RHO was 0-5.