J277 1.2.4 Data storage L03

What do we call the smallest unit of data that can be represented in an image?

• Pixel

• Dot

• Colour

• Bit

What is meant by colour depth?

• Number of pixels in the image
  

• The number of colours available for each pixel

• How pixelated the image is

If you increase the colour depth the file size will decrease.

• True

• False

How many colours can be represented with a 4 bit colour depth?

• 2

• 4

• 16

• 256

What is the term used to define what must be known about a bitmap, for it to be
represented accurately?

• Microdata

• Metadata

• Megadata

In modern technology what unit of measurement would be used for screen
resolution?

• Pixels per inch (PPI)

• Dots per inch (DPI)

• Pixels per meter (PPM)

Which of the following is not stored as metadata about an image?

• Height

• Colour depth

• Resolution

• Number of people in the image

Which of the following is not an image file?

• PNG

• JPEG

• Bitmap

• MPEG

What three colours are used to produce a broad array of colours in a computer
system?

• Green, Red, Orange

• Yellow, Green, Red

• Red, Green, Blue

What is the name of the type of graphic that uses shapes of solid colour?

• Raster

• GIF

• JPEG

• Vector