1.1 Lesson 1 - Binary System

Why do computers use binary to represent data?

• Because it's easy for humans to understand
• Because computers can only process two states: on and off
• Because binary is faster than any other number system
• Because binary uses fewer digits

What does the binary digit '1' represent in terms of power?

• Power off
• Power on
• Neutral state
• Error state

How many bits are in a byte?

• 4
• 8
• 16
• 32

What is the value of 8 bits in terms of data storage?

• 1 nibble
• 1 byte
• 1 kilobyte
• 1 bit

Which of the following is equivalent to 1024 bytes?

• 1 kilobyte
• 1 kibibyte
• 1 megabyte
• 1 mebibyte

Convert the binary number 1001 to denary.

• 5
• 7
• 9
• 11

What is the largest number that can be represented with 8 bits?

• 128
• 255
• 512
• 1024

How many possible combinations can be made with 4 bits?

• 8
• 16
• 32
• 64

What is the most significant bit (MSB) in a binary number?

• The bit with the smallest value
• The bit closest to the left
• The bit closest to the right
• The middle bit

What is the binary representation of the decimal number 15?

• 0000 1111
• 1111 0000
• 0011 1100
• 1100 0011