Deck 4: Data Transfers,addressing,and Arithmetic-assessment

Question 1

The following statement will assemble without errors:
mov DWORD PTR [eax],1234h

Answer 1

True

Question 2

If AL contains +127 and you add 3 to AL,the Overflow flag will be set.

Answer 2

True

Question 3

The following instruction will produce 1FFFFFFCh in EDX:
movsx edx,-4

Answer 3

False

Question 4

The MOVSX instruction can use a variable as the source operand.

Question 5

The Overflow flag will never be set when subtracting a positive integer from a negative integer.

Question 6

The SUB instruction requires the source operand to be no larger than the destination operand.

Question 7

When you move a 16-bit constant or an 8-bit constant into a 64-bit register,the upper bits of the destination operand are cleared.

Question 8

The format for the ADD instruction is: MOV source,destination

Question 9

The MOV instruction permits a move between two 8-bit memory operands,as long as one operand uses the BYTE PTR operator.

Question 10

The SAHF instruction copies the CPU status flags to the AH register.

Question 11

The following instructions will set the Overflow flag:
mov al,80h
sub al,-5

Question 12

The following instruction will assemble correctly:
dec BYTE PTR [edi]

Question 13

Suppose BX and DX both contain positive integers.If adding them produces a negative result,the Overflow flag will be set.

Question 14

The EIP register can be the source operand of a MOV,ADD,or SUB instruction.

Question 15

The following instructions will set the Overflow flag:
mov al,0D7h
add al,75h