Computer Science
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Ethics Study Guide
Updated 2026 Questions and Answers
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,Which of the following best describes how computing a. A computer will either represent information as bits. or bytes but not both
devices represent information?
b. A computer represents data as a byte which is either a 0 or a 1
C. A computer represents data as bits which is either a 0 or a 1 ANSWER
d. A computer represents information as bits which contain 8 bytes
Which of the following is NOT true of how computers a. Computing devices use patterns of bits to represent complex information
represent complex information?
B. Abstraction helps represent complex information by surfacing complexity that
might otherwise be hidden ANSWER
c. Depending on context the same sequence of bits may represent different types of
information
d. Common abstractions that are represented by computing devices include
numbers, characters, and color.
When visiting a museum Sue takes a photo of a painting a. Both the painting and the photo are analog
with a smartphone which stores the photo as an image file.
Which of the following best describes the differences b. Sampling can be used to determine whether the analog image is an accurate
between the painting itself and the photo of the painting representation of the painting
stored on the smartphone?
c. The phone can represent the photo in either digital or analog formats depending
on the sampling technique that is used
D. The photo is a digital representation of the analog painting ANSWER
Your computer uses 4 bits to represent decimal numbers a. 14
(0, 1, 2, 3 and so on) in binary. What is the SMALLEST b. 15
number for which an overflow error occur? C. 16 ANSWER
d. 17
Which of the following is true of how computers represent A. With a fixed number of bits some numbers are too large to represent in a
numbers? computer which will lead to overflow errors. ANSWER
b. Using a fixed but large number of bits can eliminate the possibility of round off
error when representing numbers in binary
c. Using a fixed but large number of bits, for example 128, eliminates the possibility
of overflow errors.
d. With a large but fixed number of bits it is possible to eliminate either round-off
errors or overflow errors, but not both
Which of the following is true of lossy and lossless a. Lossy compression algorithms are used when perfect reconstruction of the
compression algorithms? original data is important.
B. Lossy compression algorithms are typically better than lossless compression
algorithms at reducing the number of bits needed to represent a piece of data.
ANSWER
c. Lossless compression algorithms are only used to compress text data.
d. Lossless compression algorithms only allow for an approximate reconstruction of
the original data
Jorge is sending a large image file to a friend as part of a a. The image can no longer be represented using bits.
shared classroom project. Which of the following is most
likely true if Jorge opts to compress the image before b. The image will have been converted into an analog form.
sending it?
c. The image will require more pixels to display it on the screen.
D. The image will require fewer bits in order to be represented. ANSWER
, Which of the following is true of intellectual property? a. Information created on a computer is not owned by anyone since only analog
information is protected under copyright law.
b. You do not need to cite work created by someone else if both the original work
and your use of it are in digital form.
C. Creative Commons enables content creators to freely distribute their otherwise
copyrighted work. ANSWER
d. Creative Commons has severely hindered broad and open access to digital
information
Lucy is completing a project as part of a science class a. Modifying a piece of open source software.
using materials she found online. Which of the following is
MOST LIKELY to lead to legal consequences? b. Using open access research for which she does not acquire a license.
c. Failing to publish her work under a Creative Commons license
D. Using images posted online by another student without permission or citation.
ANSWER
Ryan is designing an app that needs to quickly send low A. Lossy compression since it typically results in smaller data sizes. ANSWER
quality photos between users. Most smartphones take
much higher quality photos than Ryan needs for his app. b. Lossless compression since it ensures perfect reconstruction of the photo.
Which answer best describes the type of compression
Ryan should choose and why? c. Lossy compression since it ensures perfect reconstruction of the photo.
d. Lossless compression since it typically results in smaller data sizes.
Lisa takes a picture with her smartphone which she a. Allen owns the photo because only holders of a Creative Commons license can
subsequently posts online. Allen finds the picture online own works online.
and posts a copy of it on his website with an attached
Creative Commons license. Which of the following best b. Lisa owns the photo because she was the original creator and did not license the
describes who owns the photo? work.
C. lisa owns the photo because it was granted a Creative Commons license by
another person online.
ANSWER
d. Both own the photo because creating a copy makes it her intellectual property.
Convert the binary (base-2) number 0011 0001 to decimal a. 32
(base-10) b. 64
c. 49
d. 121
Convert the decimal (base-10) number 129 to binary a. 1000 0001
(base-2). b. 1100 0001
c. 0110 0110
d. 0001 1111
Which of these binary (base-2) numbers is the smallest? a. 1000 0001
b. 1100 0001
c. 0110 0110
d. 0001 1111
Mid-Term 2026 | Study
Guide, Practice Questions,
Answers, Rationales &
Exam Review | Complete
Ethics Study Guide
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
,Which of the following best describes how computing a. A computer will either represent information as bits. or bytes but not both
devices represent information?
b. A computer represents data as a byte which is either a 0 or a 1
C. A computer represents data as bits which is either a 0 or a 1 ANSWER
d. A computer represents information as bits which contain 8 bytes
Which of the following is NOT true of how computers a. Computing devices use patterns of bits to represent complex information
represent complex information?
B. Abstraction helps represent complex information by surfacing complexity that
might otherwise be hidden ANSWER
c. Depending on context the same sequence of bits may represent different types of
information
d. Common abstractions that are represented by computing devices include
numbers, characters, and color.
When visiting a museum Sue takes a photo of a painting a. Both the painting and the photo are analog
with a smartphone which stores the photo as an image file.
Which of the following best describes the differences b. Sampling can be used to determine whether the analog image is an accurate
between the painting itself and the photo of the painting representation of the painting
stored on the smartphone?
c. The phone can represent the photo in either digital or analog formats depending
on the sampling technique that is used
D. The photo is a digital representation of the analog painting ANSWER
Your computer uses 4 bits to represent decimal numbers a. 14
(0, 1, 2, 3 and so on) in binary. What is the SMALLEST b. 15
number for which an overflow error occur? C. 16 ANSWER
d. 17
Which of the following is true of how computers represent A. With a fixed number of bits some numbers are too large to represent in a
numbers? computer which will lead to overflow errors. ANSWER
b. Using a fixed but large number of bits can eliminate the possibility of round off
error when representing numbers in binary
c. Using a fixed but large number of bits, for example 128, eliminates the possibility
of overflow errors.
d. With a large but fixed number of bits it is possible to eliminate either round-off
errors or overflow errors, but not both
Which of the following is true of lossy and lossless a. Lossy compression algorithms are used when perfect reconstruction of the
compression algorithms? original data is important.
B. Lossy compression algorithms are typically better than lossless compression
algorithms at reducing the number of bits needed to represent a piece of data.
ANSWER
c. Lossless compression algorithms are only used to compress text data.
d. Lossless compression algorithms only allow for an approximate reconstruction of
the original data
Jorge is sending a large image file to a friend as part of a a. The image can no longer be represented using bits.
shared classroom project. Which of the following is most
likely true if Jorge opts to compress the image before b. The image will have been converted into an analog form.
sending it?
c. The image will require more pixels to display it on the screen.
D. The image will require fewer bits in order to be represented. ANSWER
, Which of the following is true of intellectual property? a. Information created on a computer is not owned by anyone since only analog
information is protected under copyright law.
b. You do not need to cite work created by someone else if both the original work
and your use of it are in digital form.
C. Creative Commons enables content creators to freely distribute their otherwise
copyrighted work. ANSWER
d. Creative Commons has severely hindered broad and open access to digital
information
Lucy is completing a project as part of a science class a. Modifying a piece of open source software.
using materials she found online. Which of the following is
MOST LIKELY to lead to legal consequences? b. Using open access research for which she does not acquire a license.
c. Failing to publish her work under a Creative Commons license
D. Using images posted online by another student without permission or citation.
ANSWER
Ryan is designing an app that needs to quickly send low A. Lossy compression since it typically results in smaller data sizes. ANSWER
quality photos between users. Most smartphones take
much higher quality photos than Ryan needs for his app. b. Lossless compression since it ensures perfect reconstruction of the photo.
Which answer best describes the type of compression
Ryan should choose and why? c. Lossy compression since it ensures perfect reconstruction of the photo.
d. Lossless compression since it typically results in smaller data sizes.
Lisa takes a picture with her smartphone which she a. Allen owns the photo because only holders of a Creative Commons license can
subsequently posts online. Allen finds the picture online own works online.
and posts a copy of it on his website with an attached
Creative Commons license. Which of the following best b. Lisa owns the photo because she was the original creator and did not license the
describes who owns the photo? work.
C. lisa owns the photo because it was granted a Creative Commons license by
another person online.
ANSWER
d. Both own the photo because creating a copy makes it her intellectual property.
Convert the binary (base-2) number 0011 0001 to decimal a. 32
(base-10) b. 64
c. 49
d. 121
Convert the decimal (base-10) number 129 to binary a. 1000 0001
(base-2). b. 1100 0001
c. 0110 0110
d. 0001 1111
Which of these binary (base-2) numbers is the smallest? a. 1000 0001
b. 1100 0001
c. 0110 0110
d. 0001 1111
