CS Final Review
Authored by Jon Kern
Computers
9th - 12th Grade
Used 13+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following best describes how computing devices represent information?
A computer will either represent information as bits or bytes but not both
A computer represents data as a byte which is either a 0 or a 1
A computer represents data as bits which is either a 0 or a 1
A computer represents information as bits which contain 8 bytes.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ryan is designing an app that needs to quickly send low quality photos between users. Most smartphones take much higher quality photos than Ryan needs for his app. Which answer best describes the type of compression Ryan should choose and why?
Lossless compression since it ensures perfect reconstruction of the photo.
Lossy compression since it typically results in smaller data sizes.
Lossy compression since it ensures perfect reconstruction of the photo.
Lossless compression since it typically results in smaller data sizes.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Your computer uses 4 bits to represent decimal numbers (0, 1, 2, 3 and so on) in binary. What is the SMALLEST number for which an overflow error occur?
14
17
15
16
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Convert the binary (base-2) number 1001 to decimal (base-10).
9
10
16
17
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many total numbers can be represented with an 8-bit binary (base-2) system?
255
127
128
256
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
a computing device is
a machine that can run a program
a group of computers working together for a common purpose
a group of connected computers that can send or receive data
a sequence of direct connections
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
a computing system is
a group of connected computers that can send or receive data
a group of computers working together for a common purpose
a machine that can run a program
a sequence of direct connections
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