Digital Data - Computing

How many nibbles in 2 Bytes?

• 4

• 2

• 8

• 1

How many bits in 1KB

• 1000000

• 8000

• 1000

• 80000

How many MB in 1TB?

• 1000000

• 1000

• 1000000000

• 2000000

Which two statements best describes the term 'Unicode'?

• Can only represent a small number of characters

• A character set

• Used to store the number of colours in a pixel

• Can represent all characters in the world

_ _ _ _ _ is an 8-bit character set.

Which statement best describes the term 'lossy compression'

• Making the file size bigger to save space

• Reducing file size without removing data

• Reducing file size without losing quality

• Reducing the file size by removing data

To calaculate the size of a sound file in bits. The formula is...

Sample Rate * Bit Depth * ?

Which of the following would increase the file size of an image?

• More metadata

• Higher resolution

• Larger colour depth

• More people in the picture

An image is 8 × 8 pixels and has a colour depth of 5. What is the file size of this image in Bytes?

• 120

• 40

• 80

• 64

Each measurement of sound that is recorded and saved as a binary value is a called a _ _ _ _ _ _