1) When converting a 32-bit unsigned integer to a 64-bit unsigned integer, which operation will preserve the correct value?

a)The correct value cannot always be preserved b)Sign extension c)Zero extension d)Truncation

2)When converting a 32-bit signed two's-complement integer to a 64-bit signed two's-complement integer, which operation will preserve the correct value?

a)The correct value cannot always be preserved b)Sign extension c)Zero extension d)Truncation

3)When converting a 32-bit unsigned integer to a 32-bit signed two's-complement integer, which operation will preserve the correct value?

a)The correct value cannot always be preserved b)Sign extension c)Zero extension d)Truncation

4)When converting a 64-bit unsigned integer to a 32-bit unsigned integer, which operation will preserve the correct value?

a)The correct value cannot always be preserved b)Sign extension c)Zero extension d)Truncation