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WorksheetsGrade 8 Quiz
Total questions: 11
Worksheet time: 4mins
The number of bits per pixel that are used to represent the color in the image
Pixel
Image Resolution
Color Depth
Sampling
Number of pixels that make up an image
Image Depth
Color Depth
Image Resolution
Pixels
True color stores
256 colors
16 million colors
8 colors
Calculate the number of pixels of an image with width 80 pixels and height 80 pixels?
8080 px
8800 px
1600 px
6400 px
Which of the following statements are true for Lossy compression
Does not Reduce the quality of the image
Reduces the quality of an image
Keeping the original quality is important
Small reduction in quality is not important
__________________ file type does not support lossless compression
PNG
JPEG
GIF
The number of bits in a single audio sample is called (a)
Computers can save continuous data.
True
False
If a byte 1001011 appears in an image file, it will represent a
Text character
Number
Colour
Which statement is true for Encryption
Encryption is when messages are hidden
Encryption is when messages are changes into a different format permanently
Encryption is when messages are changed into a format that no one can read
Encryption is when messages are changed into a format so that only authorised person can read.
The content of a website can be changed in a (a) website
