APCSP 2021 Practice Exam MCQ: Questions and Answers
[same chart as last question]
A student wants to count the number of restaurants in the spreadsheet whose price range is $30 or less and
whose average customer rating is at least 4.0. For a given row in the spreadsheet, suppose prcRange contains
the price range as a string and avgRating contains the average customer rating as a decimal number.
Which of the following expressions will evaluate to true if the restaurant should be counted and evaluates to
false otherwise?
A) (avgRating ≥ 4.0) AND ((prcRange = "lo") AND (prcRange = "med"))
B) (avgRating ≥ 4.0) AND ((prcRange = "lo") OR (prcRange = "med"))
C) (avgRating ≥ 4.0) OR ((prcRange = "lo") AND (prcRange = "med"))
D) (avgRating ≥ 4.0) OR ((prcRange = "lo") OR (prcRange = "med")) - ansB
[same prompt as last question]
Adrianna uses RunRoutr to suggest a running route. All compatible users near Adrianna receive a notification
that shows her running route. Which of the following data is not obtained using data collected from Adrianna's
smartphone but necessary for RunRoutr to share Adrianna's running route?
A) Adrianna's average running speed
B) Adrianna's preferred running distance
C) The current locations of other RunRoutr users
D) The usernames on Adrianna's contact list - ansC
[same prompt as last question]
Businesses have the ability to target advertisements to different groups of people who use RunRoutr. Which of
the following groups is LEAST likely to receive targeted advertisements?
A) Individuals who appear on each other's contact lists
B) Individuals who are interested in running and fitness
C) Individuals who sign up for a premium account
D) Individuals whose running routes begin or end near a particular business location - ansC
,[same prompt as last question]
What control is represented by the decimal value 15 ?
A) ←
B) ↑
C) →
D) ↓ - ansD
[same prompt as last question]
Which of the following is most likely to be a benefit to users of the application?
A) The application allows users to identify all other users in a particular area.
B) Users of the application may be able to easily identify all other users in a particular area as a result of the
application's algorithm for determining whether users are compatible.
C) Users of the application may see health benefits as a result of the application encouraging them to exercise
with each other.
D) Users of the application who live in rural areas have the ability to use all the features of the application,
even when they do not have Internet and geolocation connectivity. - ansC
[same prompt as last question]
Which of the following is most likely to be a data privacy concern for RunRoutr users?
A) Users of the application are required to carry their smartphones with them while running in order to enable
all of the application's features.
B) Users of the application may have the ability to determine information about the locations of users that are
not on their contact lists.
C) Users of the application may not be able to accurately track their running history if they share their
smartphone with another family member.
D) Users of the application may not be compatible with any other users in their area. - ansB
A binary number is to be transformed by appending three 0s to the end of the number. For example, 11101 is
transformed to 11101000. Which of the following correctly describes the relationship between the
transformed number and the original number?
, A) The transformed number is 3 times the value of the original number.
B) The transformed number is 4 times the value of the original number.
C) The transformed number is 8 times the value of the original number.
D) The transformed number is 1,000 times the value of the original number. - ansC
A certain computer has two identical processors that are able to run in parallel. The following table indicates
the amount of time it takes to execute each of four processes on a single processor. Assume that none of the
processes is dependent on any of the other processes.
Which of the following parallel computing solutions would minimize the amount of time it takes to execute all
four processes?
A) Running processes P and Q on one processor and processes R and S on the other processor
B) Running processes P and R on one processor and processes Q and S on the other processor
C) Running processes P and S on one processor and processes Q and R on the other processor
D) Running process P on one processor and processes Q, R, and S on the other processor - ansA
A certain social media application is popular with people across the United States. The developers of the
application are updating the algorithm used by the application to introduce a new feature that allows users of
the application with similar interests to connect with one another. Which of the following strategies is LEAST
likely to introduce bias into the application?
A) Enticing users to spend more time using the application by providing the updated algorithm for users who
use the application at least ten hours per week
B) Inviting a random sample of all users to try out the new algorithm and provide feedback before it is released
to a wider audience
C) Providing the updated algorithm only to teenage users to generate excitement about the new feature
D) Testing the updated algorithm with a small number of users in the city where the developers are located so
that immediate feedback can be gathered - ansB
A city maintains a database of all traffic tickets that were issued over the past ten years. The tickets are divided
into the following two categories.
- Moving violations
[same chart as last question]
A student wants to count the number of restaurants in the spreadsheet whose price range is $30 or less and
whose average customer rating is at least 4.0. For a given row in the spreadsheet, suppose prcRange contains
the price range as a string and avgRating contains the average customer rating as a decimal number.
Which of the following expressions will evaluate to true if the restaurant should be counted and evaluates to
false otherwise?
A) (avgRating ≥ 4.0) AND ((prcRange = "lo") AND (prcRange = "med"))
B) (avgRating ≥ 4.0) AND ((prcRange = "lo") OR (prcRange = "med"))
C) (avgRating ≥ 4.0) OR ((prcRange = "lo") AND (prcRange = "med"))
D) (avgRating ≥ 4.0) OR ((prcRange = "lo") OR (prcRange = "med")) - ansB
[same prompt as last question]
Adrianna uses RunRoutr to suggest a running route. All compatible users near Adrianna receive a notification
that shows her running route. Which of the following data is not obtained using data collected from Adrianna's
smartphone but necessary for RunRoutr to share Adrianna's running route?
A) Adrianna's average running speed
B) Adrianna's preferred running distance
C) The current locations of other RunRoutr users
D) The usernames on Adrianna's contact list - ansC
[same prompt as last question]
Businesses have the ability to target advertisements to different groups of people who use RunRoutr. Which of
the following groups is LEAST likely to receive targeted advertisements?
A) Individuals who appear on each other's contact lists
B) Individuals who are interested in running and fitness
C) Individuals who sign up for a premium account
D) Individuals whose running routes begin or end near a particular business location - ansC
,[same prompt as last question]
What control is represented by the decimal value 15 ?
A) ←
B) ↑
C) →
D) ↓ - ansD
[same prompt as last question]
Which of the following is most likely to be a benefit to users of the application?
A) The application allows users to identify all other users in a particular area.
B) Users of the application may be able to easily identify all other users in a particular area as a result of the
application's algorithm for determining whether users are compatible.
C) Users of the application may see health benefits as a result of the application encouraging them to exercise
with each other.
D) Users of the application who live in rural areas have the ability to use all the features of the application,
even when they do not have Internet and geolocation connectivity. - ansC
[same prompt as last question]
Which of the following is most likely to be a data privacy concern for RunRoutr users?
A) Users of the application are required to carry their smartphones with them while running in order to enable
all of the application's features.
B) Users of the application may have the ability to determine information about the locations of users that are
not on their contact lists.
C) Users of the application may not be able to accurately track their running history if they share their
smartphone with another family member.
D) Users of the application may not be compatible with any other users in their area. - ansB
A binary number is to be transformed by appending three 0s to the end of the number. For example, 11101 is
transformed to 11101000. Which of the following correctly describes the relationship between the
transformed number and the original number?
, A) The transformed number is 3 times the value of the original number.
B) The transformed number is 4 times the value of the original number.
C) The transformed number is 8 times the value of the original number.
D) The transformed number is 1,000 times the value of the original number. - ansC
A certain computer has two identical processors that are able to run in parallel. The following table indicates
the amount of time it takes to execute each of four processes on a single processor. Assume that none of the
processes is dependent on any of the other processes.
Which of the following parallel computing solutions would minimize the amount of time it takes to execute all
four processes?
A) Running processes P and Q on one processor and processes R and S on the other processor
B) Running processes P and R on one processor and processes Q and S on the other processor
C) Running processes P and S on one processor and processes Q and R on the other processor
D) Running process P on one processor and processes Q, R, and S on the other processor - ansA
A certain social media application is popular with people across the United States. The developers of the
application are updating the algorithm used by the application to introduce a new feature that allows users of
the application with similar interests to connect with one another. Which of the following strategies is LEAST
likely to introduce bias into the application?
A) Enticing users to spend more time using the application by providing the updated algorithm for users who
use the application at least ten hours per week
B) Inviting a random sample of all users to try out the new algorithm and provide feedback before it is released
to a wider audience
C) Providing the updated algorithm only to teenage users to generate excitement about the new feature
D) Testing the updated algorithm with a small number of users in the city where the developers are located so
that immediate feedback can be gathered - ansB
A city maintains a database of all traffic tickets that were issued over the past ten years. The tickets are divided
into the following two categories.
- Moving violations
