iGCSE Computer Science: Digital Image Representation

Quiz
•
Computers
•
9th - 12th Grade
•
Hard
Calum Gordon
Used 507+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pixels get their colour from a combination of which colours?
cyan magenta yellow black
red green blue
primary colours
black white
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Which factors affect the file size of a bitmap image? (select all that apply)
pixel density
image dimensions
colour depth
software used to create it
format of image meta-data
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If an image has a colour depth of 8 bits then the number of possible colour shades is ... ?
256
8
16
2014
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If an image has a colour depth of 65,536 colours, then the number of bits used to represent each pixel is ...
64
10
8
16
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The True Color bitmap standard uses 24 bits to represent every pixel. How many possible colour shades does this allow?
16,777,216
65,536
24
48
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of these image file formats involves lossy compression?
.gif
.png
.jpg
.bmp
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Which of these image file formats involves lossless compression? (select all that apply)
.gif
.png
.jpg
.bmp
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