Computational Thinking~Problem Solving/Code.Org

How many megabytes are in a gigabyte?

• 10

• 1000

• 10,000

• 1,000,000

How many BITS are in a megabyte?

• 8

• 1,000

• 1,000,000

• 8,000,000

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

To encode the same number of values as 12 binary digits you would need how many hexadecimal digits?

• 2

• 3

• 4

• 6

Adding a bit to a binary number...

• ...doubles the number of values that can be represented.

• ...increases the number of values that can be represented by 1000.

• ...increases the number of values that can be represented by 2.

• ...squares the number of values that can be represented.

Which of the file types is an audiofile type?

• jpg

• mp3

• png

• csv

GIF images can only store 256 different colors. If you convert an image with more colors to a GIF, it will remove or change many of the colors in the original photo when compressing the data. This means that GIF images are:

• lossy

• lossless

How many bytes are in a gigabyte?

• 1,000 - thousand

• 1,000,000 - million

• 1,000,000,000 - billion

• 1,000,000,000,000 - trillion

Removing all vowels from text, so that the original text is missing letters but is still decipherable, is an example of what type of compression?

• Lossless

• Lossy

What color model used to encode colors is shown here?

• CMYK

• Hex

• RGB

• HSV