AP CSP - code.org Unit 2
Authored by Albi Smedley
Computers
9th - 12th Grade
Used 171+ times
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About
This quiz covers fundamental concepts in computer science related to data representation and digital media, specifically focusing on memory units, number systems, and data compression. The content aligns with high school level computer science, particularly grades 9-12, as it requires students to understand binary and hexadecimal number systems, calculate bit and byte relationships, and analyze different types of data compression. Students need a solid foundation in mathematical reasoning to convert between different units of digital storage, comprehend how computers represent colors using RGB models, and distinguish between lossless and lossy compression methods. The questions assess both factual knowledge about digital storage hierarchies (bits, bytes, kilobytes, megabytes) and conceptual understanding of how digital images are encoded, including metadata storage and color depth calculations using hexadecimal notation. Created by Albi Smedley, a Computers teacher in the US who teaches grades 9-12. This assessment serves as an excellent tool for formative evaluation during a unit on digital representation, allowing students to demonstrate their grasp of essential computing concepts before moving to more advanced programming topics. Teachers can deploy this quiz as a warm-up activity to activate prior knowledge, assign it as homework to reinforce classroom learning, or use it as a review session before a summative assessment. The varied question formats and practical applications make it particularly effective for identifying students who need additional support with mathematical conversions or conceptual gaps in understanding data compression principles. This content directly supports learning standards related to data representation and digital information processing, helping students build the foundational knowledge necessary for advanced computer science coursework.
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17 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these units of memory is the smallest?
byte
kilobyte
bit
megabyte
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these units of memory is the smallest?
megabyte
gigabyte
terabyte
petabyte
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these would MOST LIKELY be measured in megabytes (MB) if saved on your computer?
An entire season of an HD TV Show
A Microsoft Word essay
A new Drake song
Google Maps data for the entire world
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many bits are in a byte?
1
4
8
~1000 or 1024
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many bytes are in a kilobyte?
8
128
255
~1000 or 1024
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many digits are there in the decimal number system?
1
2
10
16
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many digits exist in the hexadecimal number system?
1
2
10
16
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