Binary and Hexadecimal systems

A computer stores data in binary form. Binary numbers can be represented as hexadecimal and denary numbers.

(a) Convert the 8-bit binary number 01010101 to denary.

• 85

• 90

• 63

• 79

Computers use ___________: strings of 0s and 1s to stand for letters, sounds, and all of the other data they handle.

• binary code

• algorithms

• electronic devices

• transistors

• electric current

A ___ is the basic unit of all computing memory storage terms.

Hexadecimal number system is a base __ system

The number of bits used to represent each color is called the ____________

Convert Denary into Binary:

254

• 1111 1100

• 1110 1111

• 1010 0101

• 1111 1110

Which of the following is NOT a binary number?

• 1111

• 101

• 11E

• 000

What is 01010111 in hexadecimal? 

• 57
• 60
• 5A
• 55

2 types of IP addresses?

• IPv4 and IPv6

• IPv4 and IPv8

• IPv3 and IPv6

• IPv9 and IPv10

Convert Hexadecimal into Denary:

45A

• 1234

• 4321

• 1114

• 6969