Y8 - Representations Topic Test

Which of these is a method of storing data? Select all that apply.

• Braille

• DNA

• Pens

• QR Code

• Watching live events

From your research in previous lessons - how was sound encoded onto the old cassette tapes?

• Optically

• Magnetically

• Physically

• Written

• Binary

Which is not an encoded format of data

• Light

• Wi-Fi

• Hieroglyphs

• Carrier Pigeon

• Braille

What is the binary for the letter 'd'?

• 0110 0010

• 0110 0111

• 0110 0100

• 0110 0010

Work out what would be the binary value for the letter g. Enter it in binary as 8 ones and zeros without using a space. [3 points]

What values does binary use?

• Ones

• 0,1 and 2

• 0 and 1

• 0-9

• None of these

If you have a single 'bit' to store data, how many possible options do you have?

• 1

• 0

• 2

• 10

If you have 3 'bits', how many possible combinations can you have?

• 2

• 4

• 8

• 16

• 32

If you have two 'bits', how many unique combinations or values could that contain?

• 1

• 2

• 4

• 8

• 16

What is this binary number if we convert it to our number system (Denary / Base 10)?
Answer using numbers only.