Unit 3 Review

If a binary number ends with a 1, it must be...

• An odd number
• An even number
• A prime number
• The number 12

Tags

CCSS.2.OA.C.3

Increasing the colour depth means…

• A bigger range of colours can be used for each pixel
• More pixels are in the image.
• More colours are in the image.
• Darker colours

What is 27 in hexadecimal

• 1B
• 17
• 11011
• 1C

Identify a true statement:

• Standard ASCII only uses the first 128 positions in the table.
• Standard ASCII only uses the first 255 positions in the table.
• ASCII has more letters than Unicode

Lossy compression works by identifying sound frequencies that are not obvious and deleting them.

• True
• False

Denary is a base ____ number system

• 2

• 10

• 16

• 50

How many bits per pixel do you need to make 4 colours?

• colour depth of 1

• colour depth of 2

• colour depth of 3

• colour depth of 4

Bitmap Colour Depth is

• the colour of each pixel.

• the density of pixels in an image.

• information stored in an image to help recreate the image.

• the number of bits used for each pixel.

What is the file size in bits, of a 10x10dpi bitmap image with a colour depth of 4 bits?

• 4000 bits

• 1000 bits

• 1600 bits

• 400 bits

Metadata doesn't contain the following:

• File name.
• Print dimensions.
• Colour depth.
• Camera settings for when the picture was taken.