AP Computer Science Practice Test 1

You develop a program that lets you use different operations (addition, subtraction, multiplication, division, etc.) on a set of numbers derived from a database.

However, the actual test results give a random value, which leads you to suspect that there is a randomizing variable in your code.

Musicians record their songs on a computer. When they listen to a digitally saved copy of their song, they find the sound quality lower than expected. Which of the following could be a possible reason why this difference exists?

A school had a 90% pass rate for students that took the last AP exam. The school wants to use this achievement to advertise its services to families of prospective students.

Which of the following methods would be most effective in delivering this information to the families in a summarized manner?

A robot operating on the following code is placed on a 5×5 grid at a start point (blue triangle). Which of the following is the likely outcome if it must follow the code to get to a possible endpoint (red arrow) with the correct orientation?

REPEAT UNTIL (END)

{IF (MOVEMENT_AVAILABLE(forward))

{MOVE_FORWARD()}

ELSE

A programmer is designing a code to analyze the number of people in middle age. The standard is set to be 42, and only citizens above this age are considered middle-aged citizens.

The algorithm can be designed with two different conditional statements, shown below. Will the two statements have the same operations?

I. IF (age > 42)

II. IF (NOT (age < 42))

Which of the following codes will output a TRUE statement if executed?

An organization has set up a parallel computing system to process a large amount of data so that all processes can be done promptly by breaking down into smaller parts and feeding them to individual computer devices for sequential processing.

The organization, however, asks its employees not to add any additional devices to the system. What could be a possible reason for the restriction if the organization does not want to further break up the tasks?

When you go to a bank to open a new account, the bank asks you for your phone number so that they can associate it with your account in case of any incidents. Which of the following best describes the reason for doing so?

Chicago recently hired a firm to install security cameras with facial recognition software around Central Park. However, a brawling incident at the park led to the arrest of an innocent person based on the recognized facial features of one of the belligerents.

What should the firm do to remove the bias?

After Covid, the government has taken the initiative to reduce the digital gap between different classes of society. They believe this will increase the accessibility to computing and internet resources and create many jobs.

Which of the following steps, if taken, will not be effective in reducing this gap?