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WorksheetsData representation assessment Prep
Total questions: 21
Worksheet time: 42mins
How many bytes are there in 1 kibibyte
964
1024
1000
1036
What is the denary equivalent to 1001?
9
8
6
10
Convert 27 in denary to its hexadecimal equivalent
1B
A1
46
48
What base is hexadecimal?
10
8
16
2
What is the Hexidecimal value 2C in binary?
0000 0100
0000 1111
0010 1100
0010 1101
What happens when a lossy compressed image is uncompressed?
Quality will decrease compared to when it was compressed
Quality Will increase compared to when it was compressed
Quality will remain the same as when it was compressed
The image will increase in file size
What happens when a lossless compressed image is uncompressed?
Quality will decrease compared to when it was compressed
Quality Will increase compared to when it was compressed
Quality will remain the same as before it was compressed
The image will increase in file size
What is the correct formulae for working out the total amount of pixels in an image?
Pixel Height / Pixel Width
Pixel Width - Pixel Height
Pixel Width + Pixel Height
Pixel Width x Pixel Height
When we are talking about resolution what are we talking about?
PPI - pixels per inch
The size of the image file
The total amount of pixels in the image
The amount of colours in the image
What is the formulae for working out the ppi of a display?
Number of of pixels horizontally
x
Number of of pixels vertically
Number of of pixels horizontally /
Width of screen in inches
Number of of pixels horizontally x
Height of the screen
Number of of pixels vertically
+
Number of of pixels horizontally
What is the formulae for working out the filesize of an image in bits?
Width x Height x Colour depth
Width x Height x Colour depth / 8
Width x Height - Colour depth
Width / Height / Colour depth
What is the formulae for working out the filesize of an image in bytes?
Width x Height x Colour depth
Width x Height x Colour depth / 8
Width x Height - Colour depth
Width / Height / Colour depth
How many bytes are in a Mebibyte?
1024 x 1024
1024
1000
1000 x 1000
What expression will calculate the amount of bytes in 2 Gibibytes?
2x 1024 x 1024 x 1024
3 x 1024 x 1024
2 x 1024 x 1024 x 1024 x 1024
1024 x 1024
Convert 78 to 8 bit binary?
1001110
01001110
01001111
01011110
what is 0001 1101 + 0100 0010 in binary?
0101 1111
0110 0111
1001 1110
1111 1111
What is 1011 in hexadecimal?
B
9
A
E
What is the result of applying a logical shift left of 2 on the 8 bit binary number
0010 1011
1100 1100
1001 0110
1110 1101
1010 1100
How many bytes are there in a text file with 72 characters?
80
72
64
576
What is the effect of a higher sample rate when recording a sound file?
The length of the sound file increases
The file size decreases
Improved sound quality
Lower sound quality
What is amplitude?
Measurement of sound
number of bits used per sample
Time between samples
number of samples per second
