data a: .word 0x1a1b1c1d

.text .globl main main:

B.4: In the hexadecimal number 0x1a1b1c1d, which byte (report its value) is the most significant?

That is, which byte carries the most weight. That is, contains the most significant bit?

.data a: .word 0x1a1b1c1d 

B.5: In our updated program, seen above, which byte (report its value) of a has the greatest address?