Data Representation6G – ReviseComputerScience

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Question 1 of 10

1. Question
What is the name of the blocks of colour which, when put together, forms an image?
- Bit
- Pixel
- Dot
- Square
Correct

Incorrect
Question 2 of 10

2. Question
How many colours can a 4 bit image hold?
- 2
- 4
- 8
- 16
- 32
- 64
Correct

Incorrect
Question 3 of 10

3. Question
Which of the following statements best describes bit depth?
- The size of data (in bits) of each pixel.
- The amount of pixels in a set given area
- The amount of pixels in the image
- The size of data (in bits) of the image file
Correct

Incorrect
Question 4 of 10

4. Question
Which of the following statements best describes image resolution?
- The size of data (in bits) of each pixel.
- The amount of pixels in a set given area.
- The amount of pixels in the image.
- The size of data (in bits) of the image file.
Correct

Incorrect
Question 5 of 10

5. Question
What is another name for a 1 bit image?
- Greyscale
- Black and White
- Mono
- Contrast
Correct

Incorrect
Question 6 of 10

6. Question
If a 2 bit image's physical size was 10px x 10px, what would be the size of the file in bits?
- 100 bits
- 200 bits
- 400 bits
- 800 bits
- 1000 bits
- 2000 bits
Correct

Incorrect
Question 7 of 10

7. Question
Carrying on from the last question, what would this file size be in bytes?
Last Question: If a 2 bit image's physical size was 10px x 10px, what would be the size of the file in bits?
- 2 bytes
- 8 bytes
- 16 bytes
- 20 bytes
- 25 bytes
- 29 bytes
Correct

Incorrect
Question 8 of 10

8. Question
What happens if you increase the resolution of an image?
- File size decreases
- File size decreases and image quality increases
- Image quality decreases and the file size decreases
- Image quality increases and the file size increases
Correct

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Question 9 of 10

9. Question
What is the file size (in bytes) of a 4 bit image with dimensions 20x20?
- 100 bytes
- 150 bytes
- 180 bytes
- 200 bytes
- 210 bytes
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Question 10 of 10

10. Question
Which statement best describes a bitmap file?
- A compressed image file format
- A map made up of pixels
- Another name for a jpg file.
- An image file made up of pixels
Correct

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