03.01 Number Systems And Twos Complement - Quiz

Check your understanding

1. Which base naturally groups into 4-bit chunks (nibbles)?

   • Decimal (base 10)
   • Binary (base 2)
   • Hexadecimal (base 16) { data-correct }
   • Octal (base 8)

2. What is 101101₂ in decimal?

   • 43
   • 45 { data-correct }
   • 47
   • 51

3. In 8-bit two’s complement, what is the representation of -18?

   • 11101101
   • 11101110 { data-correct }
   • 10010010
   • 00010010

4. To convert a positive number to its negative in two’s complement, you:

   • Flip the most significant bit only
   • Invert all bits and add 1 { data-correct }
   • Subtract from 255
   • Put a minus sign in front

5. What is the range of 8-bit two’s complement integers?

   • -127 to +127
   • -128 to +127 { data-correct }
   • -255 to +255
   • 0 to 255

6. Which Python function converts decimal 45 to binary?

   • hex(45)
   • bin(45) { data-correct }
   • int(45, 2)
   • oct(45)