Digital Information

What are the benefits of lossless compression?

• It allows data to be compressed without losing any of it.

• It allows for greater compression than lossy compression.

• It allows data to be sent faster than lossy compression.

• It is the safest form of data compression.

Lossy compression is reversible.

• True

• False

Which of the following would lossy compression be appropriate for?

• Medical Records

• Financial Records

• Streaming a live sports event

• Professional Photos

Convert this number to binary: 15

• 0000 1111

• 0001 1111

• 0001 0000

• 1 0000

How can binary numbers be used to represent color images?

• By converting each pixel to a HEX number

• By using hexadecimal numbers instead of binary
• By representing colors with letters instead of numbers
• By assigning binary codes to each color channel (red, green, blue) for each pixel and combining them to represent different colors.

One byte is made up of _____ bits.

• 2

• 4

• 8

• 16

What color would the following be: 000 000 111

• Blue
• White

• Green
• Red

Convert the following number to binary: 73

• 0100 1001

• 0100 1111

• 1000 1001

• 0100 1000

Convert the following number to decimal: 1111 1111

• 255

• 256

• 512

• 511

Which of the following best describes how computing devices represent information?

• A computer represents data as ASCII characters

• A computer represents data as a byte which is either a 0 or a 1

• A computer represents data as bits which is either a 0 or a 1

• A computer represents information as bits which contain 8 bytes