AP CSP - Unit 2 Review

Which unit is the smallest?

• Megabyte
• Kilobyte
• Gigabyte
• Terabyte

Which unit is the largest?

• Megabyte

• Terabyte

• Gigabyte

• Kilobyte

An artist makes an RGB raster image in which each pixel color is encoded with 12-bits --- 4 bits each for red, green and blue.Which of the following correctly shows the hexadecimal value for Red as a 12-bit representation.

• F00

• 00F

• FF00

• FF0000

Approximately how much bigger (how many more bytes) is a megabyte than a kilobyte?

• 1,000 times bigger

• 100,000 times bigger

• 1,000,000 times bigger

• 1,000,000,000 times bigger

Approximately 1,000 ________ are equal to 1 terabyte (1 TB).

• jengabytes

• gigglebytes

• gigabytes

• megabytes

Which of the following is a reason to use lossy compression?

• You want the compressed file to be larger than the original.

• You want the highest quality audio file possible, with no modifications.

• You want the highest quality image file possible, with no modifications.

• You want to save space and are not concerned if the file is the highest quality possible.

a problem solving approach (algorithm) to find a satisfactory solution where finding an optimal or exact solution is impractical or impossible

• Lossless Compression

• Heuristic

• Lossy Compression

• encryption

Which of the following is irreversible?

• lossy compression

• lossless compression

• abstraction

• RLI

Which of the file types is an audiofile type?

• jpg

• mp3

• png

• csv

An original file is 100 MB, it is compressed to 80 MB (including dictionary). What is its compression rate?

• 90%

• 80%

• 20%

• 100%