Lossy & Lossless Compression

Which form of compression would you use to save data when you transmit text messages and you don't want to lose information?

• Lossy Compression

• Lossless Compression

• Data Compression

• File Compression

Computers store information in bits, or binary digits. Which of the following could be represented in bits?

• Numbers

• Text

• Images

• All of the above

Which binary number represents the color red?

• 111 000 000

• 000 111 000

• 000 000 111

• 111 111 000

Compression is a process used to reduce the number of bits necessary to represent something.

• True

• False

• Sometimes

• Rarely

What is lossless compression?

• Compressing data without losing any details

• Reducing file size by removing some data

• Compressing data with some loss of quality

• A method to encrypt data for security

What is the goal of data compression algorithms?

• To represent information in the smallest format possible

• To increase the size of data for better processing

• To eliminate all data redundancy

• To convert data into a different format

Which binary number represents the color green?

• 111 000 000

• 000 111 000

• 000 000 111

• 111 111 000

Ryan is designing an app that needs to quickly send low quality photos between users. Most smartphones take much higher quality photos than Ryan needs for his app. Which answer best describes the type of compression Ryan should choose and why?

• Lossless compression since it preserves the original quality of the image.

• Lossy compression since it typically results in smaller data sizes.

• No compression is needed since the photos are already low quality.

• Vector compression since it is more efficient for photo storage.

Which binary number represents the color white?

• 111 111 111

• 001 001 001

• 100 100 100

• 000 000 000

What is the purpose of compressing digital information?

• To make it easier to store, to make it easier to send over the internet, and to reduce the amount of space it takes up.

• To enhance the quality of the digital information.

• To increase the size of the files for better resolution.

• To convert the information into a different format.