Recap

How many bits are there in a byte?

• 8

• 16

• 1

• 62

How many kilobytes are there in 5 megabytes?

• 50KB

• 500KB

• 5000KB

• 500000KB

The number of megabytes in a 1.5GB video file.

• 150000MB

• 150MB

• 1500MB

• 1000MB

A digital camera takes 25MB to save an image. What is this value in bytes?

• 25,000,000

• 25,000

• 250

• 250,000,0

Why do we use the binary number system in Computing?

• Because a CPU has two transistors

• To allow the CPU to be in one of two state

• To represent the two different states of transistors

A binary shift left can be used to carry out...…

• Divide

• Multiplication

• Multiplication by the power of 2

• Addition

• Subtraction

A binary right shift can carry out.....

• Divide

• Addition

• Multiplication by the power of 2

• Subtraction

• Division by the power of 2

How many bits are used to represent a character in the standard ASCII encoding?

• 8 bits

• 16 bits

• 56 bits

• 32 bits

What does image resolution refer to?

• Number of colours in the image

• Size of the image file

• Total number of pixels in the image

• The number of bits used to store the image

What is the effect of increasing the color depth of an image?

• It increases the file size of the image

• It reduces the file size of the image

• It makes the image blurrier

• It reduces the resolution of the image