Chapter 1

Question 1

Which of the following bit patterns represents the value -9 in two’s complement notation?
A.) 00011010
B.) 111110111
C.) 10001001
D.) 11111011

Answer 1

B

Question 2

What is the result of the following addition problem (using two’s complement notation)?
00001111
+ 10101010
___________

A.) 011000101
B.) 10111001
C.) 01010101
D.) 10110101

Answer 2

B

Question 3

Hexadecimal notation is preferred to represent digital data. Choose the incorrect choice.
A.) It uses fewer digits than binary
B.) Computers can understand only hexadecimal
C.) It is convenient and brief
D.) It is easier to read hexadecimal

Answer 3

B

Question 4

Rita was working on a solution to add two 8-bit numbers. She encounters an error when she adds 11111111 and 11111111. What type of error has occurred in this situations?
A.) syntax
B.) no error
C.) logic
D.) overflow

Answer 4

D

Question 5

Select the correct choice that indicates the increasing level of abstraction in hardware.
A.) logic gates, chips, memory, motherboard
B.) chips, motherboard, logic gates, memory
C.) motherboard, memory chips, logic gates
D.) logic gates, memory, motherboard, chips

Answer 5

A