
Cambridge AS Level Computer Science: Multimedia
Authored by Hazel Intatano
Computers
11th Grade
Used 1+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a bit-map image?
A system that uses pixels to make up an image.
A system that uses only lines and curves to make up an image.
A system that uses only text to make up an image.
A system that uses only sound to make up an image.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If an image has a resolution of 4096 x 3192 pixels, what does this mean?
The image is made up of 4096 pixels in width and 3192 pixels in height.
The image is made up of 4096 colours.
The image is made up of 3192 sound samples.
The image is made up of 4096 frames per second.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain the difference between image resolution and screen resolution using your own words.
Image resolution is the number of pixels in an image, while screen resolution is the number of pixels a screen can display.
Image resolution is the number of colours in an image, while screen resolution is the number of screens an image can be shown on.
Image resolution is the number of bits per pixel, while screen resolution is the number of colours a screen can display.
Image resolution and screen resolution are the same thing.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the pixel density (ppi) of an Apple iPhone 8 with a 5.5-inch screen and a resolution of 1920 × 1080 pixels?
2202 ppi
1920 ppi
401 ppi
1080 ppi
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key advantage of vector graphics when resizing images?
They do not lose quality when scaled up
They become blurry when enlarged
They require more storage space
They cannot be resized
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the comparison table, why do vector graphic images not require large file sizes?
They are made up of simple geometric shapes
They use a lot of pixels
They are always very realistic
They use high image resolution
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When deciding between using a vector graphic or a bit-map image, which factor should be considered if the image needs to look very realistic?
Bit-map images are usually the best option
Vector graphics are always more realistic
File size is not important
Vector graphics are always the best option
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