G9 EOU 1.2b Quiz

What is the main reason computers use binary?

• Binary allows faster typing

• Binary can represent any letter without code

• Binary fits the on/off nature of transistors

• Binary uses fewer numbers than decimal

Which of these is NOT stored in binary inside a computer?

• Photographs

• Sound files

• Instructions

• Emotions

A byte contains:

• 4 bits

• 16 bits

• 2 bits

• 8 bits

What is the value of 1 gigabyte in megabytes?

• 1,024 MB

• 1,000 MB

• 10,000 MB

• 500 MB

Which unit is smallest?

• Megabyte

• Gigabyte

• Byte

• Bit

What does the ‘resolution’ of an image refer to?

• Number of colours used

• Dimensions in pixels

• File format used

• Compression type

What causes a larger image file size?

• Low resolution and 1-bit colour

• High resolution and high colour depth

• Monochrome palette

• Minimal metadata

Which formula calculates bitmap image size?

• Bit depth ÷ resolution

• Width × Height × Colour depth

• Width + Height + Colour depth

• Width ÷ Colour depth × Resolution

How is sound stored in binary?

• Through audio compression

• By capturing light values

• Using samples stored as binary numbers

• Via image pixel conversion

Why is a higher sample rate used in digital audio?

• To reduce file size

• To add more compression

• To capture more detail

• To shorten the audio