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WorksheetsCSP Unit 1 Review
Total questions: 15
Worksheet time: 45mins
What's the relationship between a byte and a bit?
8 bytes in a bit
4 bits in a byte
10 bytes is a bit
8 bits in a byte
Computers store information in bits, or binary digits. Which of the following could be represented in bits?
Numbers
Text
Images
Sounds
All of the above
Creating simplified representations of something more complex is called:
obstruction
abstraction
substitution
flippy-do
What is 0011 0100 in decimal form?
52
28
100
60
What is 226 in binary?
1111 0010
1100 1100
1110 0110
1110 0010
Is 0000 1100 equivalent to 1100 in binary?
Yes
No
How many bits do you need to make 21 in binary?
3
4
5
6
Can you make 34 with 5 bits?
Yes
No
Which is true about 3 bits?
The highest number you can reach is 8, giving you 9 numbers (0-8)
The highest number you can reach is 7, giving you 8 numbers (0-7)
The highest number you can reach is 8, giving you 8 numbers (0-7)
The highest number you can reach is 7, giving you 7 numbers (0-7)
Which is true about analog vs digital?
Analog is data with values that change continuously, or smoothly, over time while digital is has a finite set of possible values
Analog has a finite set of possible data values while digital has data values that change continuously, or smoothly, over time
Which of the following is true about creating a digital image? Mark all that apply.
The more sampling you do, the closer the image will look to the analog version
The less sampling you do, the closer the image will look to the analog version
The more pixels you have, the smaller the file size of the image
The more pixels you have, the larger the file size of the image
Compression is a process used to reduce the number of bits necessary to represent something.
True
False
What is the difference between lossy and lossless compression? Mark all that apply.
With lossless compression, you can reverse the process and recreate the original exactly
With lossy compression, no information is lost
With lossless compression, the size of the file sent is always going to be the same size as the original
Lossy compression is ok if you are just trying to send a quick silly picture to someone but if specific details are important, you should use lossless compression
Lossless compression would send a higher quality image than one sent with lossy compression
A Creative Commons license restricts the use of a copyright.
True
False
What is true about copyright laws?
If you use someone's stuff and don't cite it, you are violating copyright laws
If someone has a Creative Commons license, then you are able to use their stuff freely (as long as it follows what is written in the license)
Open source means you are free to use it without worrying about copyright laws
All of the above
