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Science, Computers
9th -
12thgrade
Data Representation (Computer science)
21 questions
Show Answers
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- 1. Multiple Choice
Convert Binary into Denary:
0110 1100
108
107
106
109
- 2. Multiple Choice
Convert Denary into Binary:
254
1111 1100
1110 1111
1010 0101
1111 1110
- 3. Fill in the Blank
Hexadecimal number system is a base __ system
- 4. Multiple Choice
Convert Binary into Hexadecimal:
1011 1110 0001
CE2
6ED
BE1
9G2
- 5. Multiple Choice
Convert Hexadecimal into Binary:
45A
0100 0101 1010
1011 1111 0000
1001 0011 0110
0100 0101 1011
- 6. Multiple Choice
Convert Hexadecimal into Denary:
45A
1234
4321
1114
6969
- 7. Multiple Choice
Convert Denary into Hexadecimal:
2004
DE4
7D4
BE4
65D
- 8. Multiple Choice
A MAC address is usually made up of how many bits?
48
32
64
128
- 9. Multiple Choice
2 types of IP addresses?
IPv4 and IPv6
IPv4 and IPv8
IPv3 and IPv6
IPv9 and IPv10
- 10. Multiple Choice
Add the 2 Binaries:
0010 0111
and
0100 1010
1001 0101
0111 0001
1011 1111
0001 1000
- 11. Multiple Choice
Shift this Binary 3 places left:
0001 0101
1010 1000
1000 1010
0101 0100
0000 1111
- 12. Multiple Choice
Convert negative binary numbers in two's compliment format into Denary:
1001 0011
-246
-109
-69
-108
- 13. Multiple Choice
Convert negative denary into Binary in two's compliment format:
-67
1011 1101
1011 1111
1010 1111
1100 0011
- 14. Multiple Choice
Sound waves are analogue data. Computers cannot work with analogue data. So what is need to be done in order for computers to store sound waves.
Sound waves need to be sampled.
Can do this by ADC
(Analogue to Digital Converter)
Sound waves need to be recorded.
Sound waves need to change frequency. By SWFC
(Sound wave to frequency converter)
Sound waves cannot be stored in computer from external sounds.
- 15. Multiple Choice
What is meant by sampling resolution (bit depth)?
The number of bits per sample.
The number of bytes per sample.
The number of pixels per sample.
The number of data per sample.
- 16. Fill in the Blank
Bitmap images are made up of ______
- 17. Fill in the Blank
The number of bits used to represent each color is called the ____________
- 18. Multiple Choice
What is an Image Resolution?
Number of pixels in an image.
Number of bits in an image.
Number of bytes in an image.
Number of data in an image.
- 19. Multiple Choice
Main drawback of high resolution images?
Increase in file size
Increase in pixels
The quality of Image.
No drawbacks.
- 20. Fill in the Blank
A ___ is the basic unit of all computing memory storage terms.
- 21. Multiple Choice
File size of an image is calculated as:
Image resolution (in pixels) x colour depth (in bits)
Sample rate x sample resolution x length of sample
Image resolution + colour depth
Image resolution - colour depth
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