How can ARM's MOV instruction work with a large number as the second operand?

Question

I just begin to study ARM assembly language, and am not clear about how to use MOV to transfer an immediate number into a register.

From both the ARM reference manual

Answer 1

If you want to move 0xffffffff to a register you can always do:

MOV R0, #-1

because 0xffffffff is the twos-complement representation of -1