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12th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do we still need ASCII if we now have Unicode?
ASCII is more efficient in terms of memory usage
Unicode is not compatible with all computer systems
ASCII is easier to understand and use
Unicode does not support all characters
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Name the two different character sets.
ASCII and Unicode
Binary and Hexadecimal
Alphanumeric and Numeric
Lowercase and Uppercase
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Shift the following number right by 3: 1010 1001
0001 0100
0101 0010
0010 0101
1001 1010
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Multiply the following number by 2: 11001
10010
110010
10110
11100
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is meant by a bitmap image?
An image file that uses a series of dots or pixels
An image file that uses vector graphics
An image file that uses lossless compression
An image file that uses metadata
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is metadata?
Data about data
Data that describes the content of an image
Data that determines the resolution of an image
Data that represents the color depth of an image
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is colour depth?
The number of pixels in an image
The number of bits used to represent the color of a pixel
The size of an image file in bytes
The resolution of an image
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