ALU 101 Binary Number Systems

Question 1

What is the decimal equivalent of the binary number 1011?

Accepted Answer

11

Answer

9

Answer

10

Answer

13

Question 2

How many bits are required to represent the decimal number 255?

Accepted Answer

8

Answer

6

Answer

7

Answer

9

Question 3

What is the hexadecimal representation of the binary number 11001010?

Accepted Answer

CA

Answer

AC

Answer

CF

Answer

FA

Question 4

In the two's complement system, what is the two's complement of 0101 (4-bit)?

Accepted Answer

1011

Answer

1010

Answer

0110

Answer

1001

Question 5

Which number base is most commonly used internally by ALU hardware?

Accepted Answer

Binary (base 2)

Answer

Decimal (base 10)

Answer

Octal (base 8)

Answer

Hexadecimal (base 16)

Question 6

What is the decimal value of the hexadecimal number 0xFF?

Accepted Answer

255

Answer

128

Answer

256

Answer

512