Deck 4: Operations on Data

Question 1

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

Answer 1

C

Question 2

_______ 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

Answer 2

C

Question 3

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

A) mask
B) carry
C) float
D) byte

Answer 3

A

Question 4

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

Question 5

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

Question 6

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

A) Only AND
B) Only OR
C) Only XOR
D) AND, OR, or XOR

Question 7

_______ 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

Question 8

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

Question 9

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

Question 10

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

Question 11

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

A) 6
B) 7
C) 8
D) 9

Question 12

_______ 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

Question 13

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

Question 14

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

Question 15

The unary _______ operator inverts its single input.

A) AND
B) OR
C) NOT
D) XOR

Question 16

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

Question 17

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

Question 18

_______ is an arithmetic operation.

A) The exclusive OR
B) The unary NOT
C) Subtraction
D) The binary AND

Question 19

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

Question 20

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