WorksheetsLossy & Lossless Compression
Total questions: 15
Worksheet time: 13mins
Refers to the compression when some of the data from the original file is lost
lossless
300 dpi
lossy
cmyk
Compression is a process used to reduce the number of bits necessary to represent something.
True
False
Computers store information in bits, or binary digits. Which of the following could be represented in bits?
Numbers
Text
Images
Sounds
All of the above
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?
Lossy compression since it typically results in smaller data sizes.
Lossless compression since it ensures perfect reconstruction of the photo.
Lossy compression since it ensures perfect reconstruction of the photo.
Lossless compression since it typically results in smaller data sizes.
What is the purpose of compressing digital information?
To make it easier to store
To make it easier to send over the internet
To reduce the amount of space it takes up
All of the above
What is lossy compression?
Compressing data without losing any details
Throwing away some information to save space
Compressing data using patterns
None of the above
What is lossless compression?
Compressing data without losing any details
Throwing away some information to save space
Compressing data using patterns
None of the above
What is the goal of data compression algorithms?
To represent information in the smallest format possible
To reduce the size of the dictionary
To increase the amount of space needed for storage
To remove all patterns from the data
Which compression technique guarantees no loss of data?
Lossy compression
Lossless compression
Data compression
Uncompressed
Which binary number represents the color red?
111 000 000
000 111 000
000 000 111
Which binary number represents the color green?
111 000 000
000 111 000
000 000 111
Which binary number represents the color blue?
111 000 000
000 111 000
000 000 111
Which binary number represents the color white?
111 111 111
001 001 001
100 100 100
000 000 000
Which binary number represents the color black?
111 111 111
001 001 001
100 100 100
000 000 000
