WorksheetsUnderstanding Compression Techniques Quiz
Total questions: 20
Worksheet time: 10mins
Which of the following is an example of a lossy compression method?
JPEG
ZIP
PNG
TAR
Which type of compression allows you to perfectly reconstruct the original data after decompression?
Lossy compression
Lossless compression
Both lossy and lossless
Neither
Which of the following is a common application of lossy compression?
Text document archiving
Medical imaging
Digital music files (MP3)
Source code storage
Which of these is a type of lossless compression?
MP3
GIF
JPEG
MPEG
What is a main advantage of lossy compression?
No data is lost
Smaller file sizes
Perfect quality retention
Slower compression speed
Which of the following is NOT a type of lossless compression?
ZIP
RAR
MP3
PNG
Which of these is an advantage of lossless compression?
Smaller file size than lossy
No loss of quality
Data cannot be recovered
Used for streaming videos
Which of the following is most suitable for compressing photographs for use on a website?
JPEG
ZIP
WAV
TAR
Which of these is a disadvantage of lossy compression?
Larger file sizes
Some data is permanently lost
Slower to compress
Cannot be used for images
Which of the following is a typical use for lossless compression?
Streaming movies
Compressing text files
Compressing music for portable players
Reducing the size of photographs for social media
Which of these file formats uses lossless compression?
MP3
PNG
JPEG
MPEG
Which of the following best describes the difference between lossy and lossless compression?
Lossy removes some data, lossless does not
Lossless removes some data, lossy does not
Both remove data permanently
Both keep all data
Which of the following is NOT an application of compression techniques?
Reducing file sizes for storage
Increasing file sizes for security
Speeding up file transfer over the internet
Saving space on devices
Which of these is a type of lossy audio compression?
FLAC
MP3
ZIP
RAR
Which of the following is a benefit of using lossless compression for software files?
Files are smaller but may lose some data
Files can be perfectly restored to their original state
Files cannot be decompressed
Files are always larger than the original
Which of these is a disadvantage of lossless compression compared to lossy compression?
Lower quality
Larger file sizes
Data cannot be recovered
Not suitable for text files
Which of the following is a common use for lossy compression?
Compressing spreadsheets
Compressing high-quality photographs for printing
Compressing videos for online streaming
Compressing source code
Which of these file types is most likely to use lossless compression?
.mp3
.zip
.jpg
.mp4
Which of the following statements is true about lossy compression?
It is reversible
It is used when perfect quality is required
It permanently removes some data
It is only used for text files
Which of the following is a reason to use lossless compression instead of lossy compression?
To achieve the smallest possible file size
To ensure no data is lost and quality is preserved
To make files unreadable
To speed up video streaming
