Cosc 2325 - Ch 6 Quiz

Front 1

The instruction:xor ax , axmakes ax equal to:

Back 1

0

Front 2

True or False?

The destination operand of the OR instruction cannot be a memory operand.

Back 2

False

Front 3

The TEST instruction always alters the destination operand.

Back 3

False

Front 4

For the following code segment:

mov AL, 10101010b

or AL, 10101011b

What value will reside inside AL?

Back 4

10101011

Front 5

True or False?

The Parity Flag (PF) denotes if the number of bits that are on in the operand is an even number.

Back 5

True

Front 6

For the following code segment:

mov AL, 11010101b

and AL, 11110000b

What value will reside inside AL?

Back 6

11010000b

Front 7

For the following code segment:

mov AL, 10101010b

or AL, AL

What value will reside inside AL?

Back 7

10101010b

Front 8

Logical and bitwise operation commands do not affect the flags register.

Back 8

False

Front 9

JA, JB, JAE, JNE are designed to work with signed comparisons.

Back 9

False

Front 10

LOOPZ and LOOPE instructions are useful when scanning an array for the first element that does not match a given value

Back 10

True