
H446_4_DB_Compression Quiz
Authored by George Dong
Computers
12th Grade
Used 4+ times

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79 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of file compression?
To increase the file size
To reduce the storage space of files on disk
To enhance the quality of images
To slow down data transmission
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between lossy and lossless compression?
Lossy compression retains all information, lossless removes unnecessary information
Lossy compression removes non-essential information, lossless retains all information
Both remove all information
Both retain all information
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is compression important for images on websites?
To make images look more colorful
To enable a web page to load quickly
To increase the file size
To reduce the number of images
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a consequence of lossy compression on images?
Improved image quality
Increased file size
Displaying untidy and blocky compression artefacts
Slower data transmission
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of compression is likely to be used for the following: a website image, a zipped file of long text documents and images, a PDF instruction manual?
Lossy compression
Lossless compression
Run Length Encoding
MP3 compression
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main advantage of lossless compression?
It reduces file size significantly
It maintains exact accuracy with no data loss
It is faster to process than lossy compression
It is used for audio files
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does Run Length Encoding (RLE) primarily record?
Every pixel in a sequence
The value and number of times a pixel repeats
Only the color of each pixel
The position of each pixel
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