AP CSP MCQ Review Questions Session 4 Quiz

StreamPal is an audio-streaming application for mobile devices that allows users to listen to streaming music and connect with other users who have similar taste in music. After downloading the application, each user creates a username, personal profile, and contact list of friends who also use the application. The application uses the device’s GPS unit to track a user’s location. Each time a user listens to a song, the user can give it a rating from 0 to 5 stars. The user can access the following features for each song that the user has rated. • A list of users on the contact list who have given the song the same rating, with links to those users’ profiles • A map showing all other users in the area who have given the song the same rating, with links to those users’ profiles A basic StreamPal account is free, but it displays advertisements that are based on data collected by the application. For example, if a user listens to a particular artist, the application may display an advertisement for concert tickets the next time the artist comes to the user’s city. Users have the ability to pay a monthly fee for a premium account, which removes advertisements from the application.

• A. Users of the basic version of StreamPal are more likely to give songs higher ratings than are users of the premium version of StreamPal.

• B. Users of the basic version of StreamPal indirectly support StreamPal by allowing themselves to receive advertisements.

• C. Users of the basic version of StreamPal spend more on monthly fees than do users of the premium version of StreamPal.

• D. Users of the basic version of StreamPal use less data storage space on their devices than do users of the premium version of StreamPal.

StreamPal is an audio-streaming application for mobile devices that allows users to listen to streaming music and connect with other users who have similar taste in music. After downloading the application, each user creates a username, personal profile, and contact list of friends who also use the application. The application uses the device’s GPS unit to track a user’s location. Each time a user listens to a song, the user can give it a rating from 0 to 5 stars. The user can access the following features for each song that the user has rated. • A list of users on the contact list who have given the song the same rating, with links to those users’ profiles • A map showing all other users in the area who have given the song the same rating, with links to those users’ profiles A basic StreamPal account is free, but it displays advertisements that are based on data collected by the application. For example, if a user listens to a particular artist, the application may display an advertisement for concert tickets the next time the artist comes to the user’s city. Users have the ability to pay a monthly fee for a premium account, which removes advertisements from the application.

• A. Users of the application are required to rate songs 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 list.

• C. Users of the application may not be able to use the application if they are located in an area with a poor Internet connection.

• D. Users of the application may not have similar music taste to any other users on their contact list.

Which of the following is a primary reason for the use of open protocols on the Internet?

• Open protocols allow devices to specify how data packets are to be routed on the Internet in advance.

• Open protocols ensure that all data transmission on the Internet is kept secure.

• Open protocols ensure that all Internet users are provided connections with equal bandwidth.

• Open protocols provide a way to standardize data transmission between different devices.

The figure above represents a network of physically linked devices, labeled A through F. A line between two devices indicates a connection. Devices can communicate only through the connections shown. Which of the following statements are true about the ability for devices A and C to communicate? Select TWO answers.

• If devices B and D were to fail, then information sent from device A could not reach device C.

• If devices B and F were to fail, then information sent from device A could not reach device C.

• If devices D and F were to fail, then information sent from device A could not reach device C.

• If devices E and F were to fail, then information sent from device A could not reach device C.

A computer has two processors that are able to run in parallel. The table above indicates the amount of time it takes either processor to execute four different processes. Assume that none of the processes is dependent on any of the other processes. A program is used to assign processes to each of the processors. Which of the following describes how the program should assign the four processes to optimize execution time?

• Processes W and X should be assigned to one processor, and processes Y and Z should be assigned to the other processor.

• Processes W and Y should be assigned to one processor, and processes X and Z should be assigned to the other processor.

• Processes W and Z should be assigned to one processor, and processes X and Y should be assigned to the other processor.

• Process Z should be assigned to one processor, and processes W, X, and Y should be assigned to the other processor.

Which of the following best explains how fault tolerance in a network is achieved?

• By providing high-bandwidth connections between devices, enabling data packets to be transmitted as quickly as possible

• By providing multiple paths between devices, enabling routing to occur even in the presence of a failed component

• By providing open network protocols, ensuring that all devices on the network are interacting in a standard way

• By providing software to monitor all network traffic, ensuring that data packets are sent and received in the proper order

Which of the following actions is most likely to be effective in reducing the digital divide at a local level?

• Creating an application that offers coupons and discounts for local businesses

• Offering a discount to utility customers who pay their bills online instead of by mail

• Providing free community access to computers at schools, libraries, and community centers

• Requiring applicants for local government jobs to complete an online application

A mobile application is used to display local traffic conditions. Which of the following features of the application best exemplifies the use of crowdsourcing?

• Users can save an address to be used at a later time.

• Users can turn on alerts to be notified about traffic accidents.

• Users can submit updates on local traffic conditions in real time.

• Users can use the application to avoid heavily congested areas.

A programmer created a piece of software and wants to publish it using a Creative Commons license. Which of the following is a direct benefit of publishing the software with this type of license?

• The programmer can ensure that the algorithms used in the software are free from bias.

• The programmer can ensure that the source code for the software is backed up for archival purposes.

• The programmer can include code that was written by other people in the software without needing to obtain permission.

• The programmer can specify the ways that other people are legally allowed to use and distribute the software.

A city’s police department has installed cameras throughout city streets. The cameras capture and store license plate data from cars driven and parked throughout the city. The authorities use recorded license plate data to identify stolen cars and to enforce parking regulations.

• The cameras may not be able to read license plates in poor weather conditions.

• Local business owners could lose customers who are unwilling to park in the city.

• Traffic personnel who work for the city could lose their jobs if their services are no longer needed.

• The vehicle location data could be used to monitor the movements of city residents.