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WorksheetsComputer Data and Graphics Quiz
Total questions: 19
Worksheet time: 28mins
Which is the smallest unit of data in a computer?
Byte
Bit
Kilobyte
Megabyte
How many bits are in 1 byte?
2
4
8
16
66 in decimal is equal to which binary value?
1010001
1000010
0100001
1110010
The ASCII value of the capital letter "A" is:
64
65
66
67
Which of the following correctly represents "BOAT" in ASCII (decimal)?
66, 79, 65, 84
65, 66, 79, 84
66, 65, 84, 79
79, 66, 84, 65
Colour depth refers to:
The number of pixels in an image
The number of bits used to store color
The size of the file
The resolution of the screen
With 8-bit color depth, how many colors are possible?
128
64
256
512
Which formula is used to calculate the image file size?
File size = (Width × Height × Colour depth) ÷ 8
File size = Width × Height
File size = Pixels × 8
File size = Resolution ÷ 2
Bandwidth is measured in:
Bytes per second
Bits per second
Kilograms per second
Hertz
A higher bandwidth means:
Faster data transfer
Slower transfer
No effect
Smaller file
Bitmap graphics are best for:
Logos
Photos
Icons
Line drawings
When zoomed in, bitmap images:
Stay sharp
Pixelate
Get smaller
Disappear
A main advantage of vector graphics is:
Smaller resolution
Quality does not reduce when scaled
Always smaller in file size
Only black and white
In Excel, the intersection of a row and a column is called:
Cell
Table
Field
Chart
Which of these is a correct Excel formula to add A1 and B1?
=A1+B1
A1+B1=
=SUM(A1;B1)
ADD(A1,B1)
Which type of chart is best for showing percentages?
Bar chart
Pie chart
Line chart
Scatter plot
Google Forms is mainly used for:
Editing videos
Creating surveys and quizzes
Designing websites
Compressing files
A file is 800 MB. If the internet speed is 20 Mbps, how long will it take to download?
a) 320 seconds (5 min 20 sec)
b) 400 seconds (6 min 40 sec)
c) 40 seconds
d) 20 seconds
A YouTuber uploads a 1.5 GB video. His home internet speed is 30 Mbps. How long will it take?
(Correct)
a) 800 seconds (13 min 20 sec)
b) 1000 seconds (16 min 40 sec)
C) 51.2 seconds
d) 60 seconds (1 min)
