Thẻ ghi nhớ: CSI104-chap4 | Quizlet

1. _______ is an arithmetic operation.

a. The exclusive OR

b. The unary NOT

c. Subtraction

d. The binary AND

c. Subtraction

2. _______ is a logical bit operator.

a. The exclusive OR

b. The unary NOT

c. The binary AND

d. exclusive OR, unary NOT, or binary AND

d. exclusive OR, unary NOT, or binary AND

3. The _______ method of integer representation is the most common method for storing integers in computer memory.

a. sign-and-magnitude

b. one's complement

c. two's complement

d. unsigned integers

c. two's complement

4. In two's complement addition, if there is a final carry after the left most column addition, _______.

a. add it to the right most column

b. add it to the left most column

c. discard it

d. increase the bit length

c. discard it

5. For an 8-bit allocation, the smallest decimal number that can be represented in two's complement form is _______.

a. -8

b. -127

c. -128

d. -256

c. -128

6. For an 8-bit allocation, the largest decimal number that can be represented in two's complement form is _______.

a. 8

b. 127

c. 128

d. 256

b. 127

7. In two's complement representation with a 4-bit allocation, we get _______ when we add 1 to 7.

a. 8

b. 1

c. -7

d. -8

d. -8

8. In two's complement representation with a 4-bit allocation, we get _______ when we add 5 to 5.

a. -5

b. -6

c. -7

d. 10

b. -6

9. If the exponent in Excess_127 is binary 10000101, the exponent in decimal is _______.

a. 6

b. 7

c. 8

d. 9

a. 6

10. If we are adding two numbers, one of which has an exponent value of 7 and the other an exponent value of 9, we need to shift the decimal point of the smaller number _______.

a. one place to the left

b. one place to the right

c. two places to the left

d. two places to the right

c. two places to the left

11. _______ operator (s) takes two inputs to produce one output.

a. Only AND

b. Only OR

c. Only XOR

d. AND, OR, or XOR

d. AND, OR, or XOR

12. The unary _______ operator inverts its single input.

a. AND

b. OR

c. NOT

d. XOR

c. NOT

13. _______ operator (s), if the input is two 0s, the output is 0.

a. In only AND

b. In only OR

c. In only XOR

d. In AND, OR, or XOR

d. In AND, OR, or XOR

14. _______ operator (s), if the input is two 1s, the output is 0.

a. In only AND

b. In only OR

c. In only XOR

d. In AND, OR, or XOR

c. In only XOR

15. For the binary AND operation, only an input of _______ gives an output of 1.

a. two 0s

b. two 1s

c. one 0 and one 1

d. two 2s

b. two 1s

16. For the binary OR operation, only an input of _______ gives an output of 0.

a. two 0s

b. two 1s

c. one 0 and one 1

d. two 2s

a. two 0s

17. We use a bit pattern called a _______ to modify another bit pattern.

a. mask

b. carry

c. float

d. byte

a. mask

18. To flip all the bits of a bit pattern, make a mask of all 1s and then _______ the bit pattern and the mask.

a. AND

b. OR

c. XOR

d. NOT

c. XOR

19. To un-set (force to 0) all the bits of a bit pattern, make a mask of all 0s and then _______ the bit pattern and the mask.

a. AND

b. OR

c. XOR

d. NOT

a. AND

20. To set (force to 1) all the bits of a bit pattern, make a mask of all 1s and then _______ the bit pattern and the mask.

a. AND

b. OR

c. XOR

d. NOT

b. OR