APCSP Exam Review

The mayor of a city is interested in learning what goals are most important for residents of the city. Members of her staff visit one of the many neighborhoods in the city and ask 20 residents to fill out a survey. The mayor is concerned that the survey may be biased and not accurately reflect the overall interests in her town. Which of the following strategies is MOST likely to address concerns about the data being biased or inaccurate

• Finding the same people surveyed previously to ask more detailed questions.

• Visiting the same neighborhood to collect more survey responses

• Visiting multiple new neighborhoods to collect more survey responses

• Having her staff collect the data using an app rather than paper surveys

In which of the following situations would parallel systems MOST likely be used to help analyze data?

• Data analysis involving two or more columns of data

• Data analysis involving both string and numeric data

• Data analysis involving large datasets

• Data analysis that could result in two or more different types of visualizations

A team of researchers wants to create a program to analyze the amount of pollution reported in roughly 3,000 counties across the United States. The program is intended to combine county data sets and then process the data. Which of the following is most likely to be a challenge in creating the program?

• A computer program cannot combine data from different files.

• Different counties may organize data in different ways.

• The number of counties is too large for the program to process.

• The total number of rows of data is too large for the program to process.

Which of the following applications is most likely to benefit from the use of crowdsourcing?

• An application that allows users to convert measurement units (e.g., inches to centimeters, ounces to liters)

• An application that allows users to purchase tickets for a local museum

• An application that allows users to compress the pictures on their devices to optimize storage space

• An application that allows users to view descriptions and photographs of local landmarks

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.

Tranmission Control Protocol (TCP):

• Breaks messages into packets and addresses them
• A DNS attack in which numerous pings are made to the same IP, causing it to crash
• Protocol used by the World Wide Web. It describes how messages are formatted and interchanged, and how web servers respond to commands.
• Provides reliable, ordered, and error-checked delivery of a stream of packets on the internet

Which bit-sending technology is used for Ethernet cables?

• Electric voltage
• Alternating frequencies
• Beam of light
• Magic

Which bit-sending technology is used for fiber optic cables?

• Electric voltage
• Alternating frequencies
• Beam of light
• Magic

The world is currently in a transition to using IPv6, a newer version of the IP protocol that uses 128-bit addresses instead of 32-bit addresses used by IPv4. What is the main problem that IPv6 was created to solve?

• IPv6 will allow problems with IPv4's address hierarchy to be resolved
• 32-bit addresses could not ensure that every internet-connected device can receive a unique IP address
• 32-bit addresses could not accommodate the increased size and amount of data traveling on the Internet as it has grown in popularity
• IPv4 proved unreliable in some cases where network redundancy could not be ensured

Which of the following are logic gates?

• AND

• Switch

• IF

• Else

• OR