Unit 1 - T1 Computer Data Representation Quiz

Give one reason why data is represented in binary in a computer.

• Binary representation is more efficient for complex calculations.

• Binary is the natural language of computers.

• Binary allows for faster data transmission.

• Binary is more secure than other forms of data representation.

State the number of bits in one byte.

• 4

• 8

• 16

• 32

State the number of bits in one nibble.

• 2

• 4

• 8

• 16

How many bytes are there in a mebibyte?

• 1,024 bytes

• 1,048,576 bytes

• 1,000,000 bytes

• 1,073,741,824 bytes

A photographer takes up to 2000 photographs per week. Each photograph requires 5MiB of storage on the camera’s memory card. Select the camera memory card with the smallest capacity that can store 2000 photographs. Put a tick in the box next to your answer.

• 4

• 8

• 16

• 32

For each of the binary values below, write down the decimal equivalent. You should include your working. Binary value: 00001011

• 11

• 10

• 12

• 9

For each of the binary values below, write down the decimal equivalent. You should include your working. Binary value: 01110110

• 118

• 116

• 120

• 110

For each of the binary values below, write down the decimal equivalent. You should include your working. Binary value: 10010111

• 151

• 150

• 145

• 158

For each of the binary values below, write down the decimal equivalent. You should include your working. Binary value: 11111111

• 255

• 127

• 128

• 256

For each of the binary values below, write down the decimal equivalent. You should include your working. Binary value: 1011010111011101

• 46877

• 46875

• 46879

• 46870