Y10 CS Ch12,13,14,15&18

The largest unsigned binary number that can be represented using 8 bits is (in binary)

The largest signed binary number that can be represented using 8 bits is (in binary)

A binary number can be multiplied by 8 by performing a

• 3-place left shift

• 3-place right shift

• 4-place left shift

• 4-place right shift

To convert from Kilobytes to Mebibytes, you'd need to

• multiply by 1000 and divide by 1024X1024

• multiply by 1024 and divide by 1000x1000

• multiply by 1000x1000 and divide by 1024

• multiply by 1024x1024 and divide by 1000

How many characters could be represented using Standard ASCII?

How many bits are used to represent characters in Extended ASCII?

A bitmap has a colour depth of 24 bits, following RGB scheme (Red, Green and Blue as primary colours). How many bits are used to represent a pure-Red pixel?

When digitalizing sound,

• a larger sampling rate will result in a larger file size

• a larger sampling rate will result in a smaller file size

• a larger sampling resolution will result in a larger file size

• a larger sampling resolution will result in a smaller file size

The type of compression that would be used to compress an image file when it's acceptable to remove some of the information permanently in order to further reduce the file size, is called

The plaintext, after being encrypted, is called