AP CSP Exam MC Prep
A school library allows students to borrow laptops. A computer program is used to count the number of times a particular laptop has been borrowed from the library (borrows) and the number of times the same laptop has been returned to the library (returns). Which of the following indicate that a particular laptop is not currently borrowed? Select two answers. (A) The difference between borrows and returns is zero. (B) The product of borrows and returns is a positive even number. (C) The quotient when borrows is divided by returns is greater than 1. (D) The sum of borrows and returns is a positive even number.
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Researchers have developed a simulation of packets traveling between server computers and client computers in a network. Of the following, which two outcomes are most likely to be results of the simulation? Select two answers. (A) Better understanding of the effect of temporarily unavailable network connections (B) Better understanding of the effect of using hexadecimal representations for binary data (C) Better understanding of the impact of access to public data in identifying solutions to problems (D) Better understanding of the impact of increased connection speeds for frequently visited servers
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Which of the following Boolean expressions are equivalent to the expression num ≥ 15 ? Select two answers. (A) (num > 15) AND (num = 15) (B) (num > 15) OR (num = 15) (C) NOT (num < 15) (D) NOT (num < 16)
BC
Which of the following can be represented by a single binary digit? Select two answers. (A) The position of the minute hand of a clock (B) The remainder when dividing a whole number by 2 (C) The value of a Boolean variable (D) The volume of a car radio
BC
A local government uses Short Message Service (SMS) text messages to alert local residents when roads areclosed. Which of the following are true statements regarding the benefits of using SMS text messages for the purpose described? Select two answers. (A) SMS text messages are guaranteed to reach all residents affected by the road closures. (B) SMS text messages are likely to reach recipients quickly. (C) SMS text messages are useful for providing detailed detour instructions. (D) SMS text messages can be sent to multiple recipients.
BD
Which of the following are benefits of using well-named variables in a computer program? Select two answers. (A) The program will run faster. (B) The program will be easier for people to read. (C) The program will have a greater data storage capacity. (D) The program will be easier to modify in the future.
BD
round-off error
difference between the calculate approximation of a number and its exact mathematical value due to rounding
overflow error
occurs when a calculation is run but the computer is unable to store the answer correctly. All computers have a predefined range of values they can represent or store. This is a sign of the execution of a set of instructions returning a value outside this range.
