Y9 Data representation

Which unit of data is the smallest?

• Kilobyte

• Megabyte

• Gigabyte

How many bits are there in a nibble?

• 8

• 4

• 2

What denary number does this binary represent:

00110101 ?

• 31

• 42

• 53

Add these binary numbers together:

00100101 + 10011011.

What is the result?

• 11000000

• 10100010

• 01101010

Which of the following best describes ASCII?

• A number set

• A character set

• A symbol set

What is each pixel in a bitmap image represented by?

• A binary code.

• Programming code.

• Machine code.

How many colours can be represented in a 2 bit image?

• 4

• 3

• 2

What is the number 10 represented as in hexadecimal?

• C

• B

• A

What is the hexadecimal number for this binary number 10001010?

• 7C

• 9B

• 8A

Which of the following best describes sound stored by a computer?

• Digital

• Sound waves

• Analogue