2023-24 - Y12 - Data Types - Quiz 3

In a program that simulates a simple light switch application, where you need to track the state of the light (on or off) and control its functionality, which data type is the most appropriate choice for creating a flag or toggle variable?

• Float
• Boolean
• Integer
• Character

What is the 8-bit unsigned binary number 01011011 in denary?

• 71
• 81
• 91
• 101

What is the denary number 205 as an unsigned 8-bit binary number?

• 11001101
• 10010110
• 11001111
• 11101010

What is the largest denary number that can be stored in an unsigned 8-bit binary number?

• 128
• 127
• 255
• 64

What is the denary number -78 as an 8-bit sign and magnitude binary number?

• 10010110
• 11010111
• 11001110
• 10110111

What is the denary number -78 as an 8-bit two's complement binary number?

• 10101101
• 10110101
• 11101011
• 10110010

The binary number 10111101 is written using 8-bit sign and magnitude. What is the number in denary?

• -45
• -61
• -68
• -75

The binary number 10011000 is written using 8-bit two's complement. What is the number in denary?

• -104
• -100
• -94
• -98

What is the smallest denary number that can be stored in an 8-bit two's complement binary number?

• -128
• -127
• -255
• -64

What is the largest denary number that can be stored in an 8-bit sign and magnitude binary number?

• 128
• 127
• 255
• 64