IRQ 3.
LTP1 should use IRQ7.
IRQ 1 is used exclusively for the keyboard controller.
6
None. Its the graphics card that uses an IRQ. The monitor is just a peripheral.
it's assigned to control keyboard
5
0
FDD cable is for floppy disk drive (FDD).
IRQ 5 is normally a free interrupt unless you have a second parallel port installed. If the interrupt is currently in use by another resource, you could reassign the IRQ that one of the conflicting resources is using to a less commonly used interrupt such as 10, 11, or 12.
IRQ 3
Depends if it's sharable or not. You could try moving the card to another slot.