WorksheetsUnit 1 Review
Total questions: 7
Worksheet time: 21mins
What is Abstraction?
Things that are too abstract.
Hides complex data that does not need to be seen.
Data that is are not defined.
A program that is complex and shows all data.
What is Overflow Error?
When you can not see the whole number.
An error where the number is too short.
An error from attempting to represent a number that is too large
An error where the program crashes due to syntax is incorrect.
What is Loseless Compression?
A process for reducing the number of bits needed to represent something without losing any information. This process is reversible.
A process for reducing the number of bits needed to represent something in which some information is lost or thrown away. This process is not reversible.
A process to reduce a message by cutting it in half.
A process where the image is expanded by doubling the number of bits in order to make it larger.
What is Lossy Compression?
A process for reducing the number of bits needed to represent something without losing any information. This process is reversible.
A process where the image is expanded by doubling the number of bits in order to make it larger.
A process to reduce a message by cutting it in half.
A process for reducing the number of bits needed to represent something in which some information is lost or thrown away. This process is not reversible.
Why would you use Lossy Compression?
It results in smaller file sizes.
Allows you to revert compression of an image.
The image is compressed so it can be expanded.
The bits can be used again to make new images.
Which one of the following numbers the biggest?
0110
1100
1001
1000
What is analog data?
It is a continuous representation that is used in most smart phones.
A representation that shows every pixel using a finite set of colors
A representation that shows pixels in sets of red, blue and green.
A representation of an image shown on some devices.
