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AP Computer Science Principles Exam Prep with Verified Answers
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AP Computer Science Principles Exam Prep with Verified Answers What is a "nested loop" and how is it used? A nested loop is a loop within another loop, used to iterate over multidimensional data structures or perform complex repetitive tasks. What does "code modularity" involve and why i...

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  • September 1, 2024
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AP Computer Science Principles Exam
Prep with Verified Answers


What is a "nested loop" and how is it used?


✔✔A nested loop is a loop within another loop, used to iterate over multidimensional data

structures or perform complex repetitive tasks.




What does "code modularity" involve and why is it beneficial?


✔✔Code modularity involves breaking code into smaller, reusable modules or functions,

improving readability, maintainability, and testability.




How does "recursion" work and when is it typically used?


✔✔Recursion occurs when a function calls itself to solve smaller instances of a problem, often

used for tasks like tree traversal or solving mathematical problems.




What is a "Boolean expression" and how is it used in programming?


✔✔A Boolean expression evaluates to either true or false and is used to control the flow of a

program with conditional statements.



1

,What is the role of "exception handling" in a program?


✔✔Exception handling manages runtime errors by allowing a program to continue operating or

handle errors gracefully without crashing.




What does "algorithm complexity" mean and how is it measured?


✔✔Algorithm complexity measures the efficiency of an algorithm in terms of time and space,

often expressed using Big O notation.




What is the purpose of "unit testing" in software development?


✔✔Unit testing involves testing individual components or functions of a program to ensure they

work correctly before integrating them into a larger system.




How does "data encapsulation" improve code security?


✔✔Data encapsulation hides internal data and implementation details from outside access,

protecting the data and preventing unauthorized modifications.




What is a "class" in object-oriented programming and how is it used?




2

,✔✔A class is a blueprint for creating objects that defines attributes and methods, allowing for

the organization and management of related data and behaviors.




What does "pseudo-code" accomplish in algorithm design?


✔✔Pseudo-code provides a high-level description of an algorithm using plain language-like

syntax, making it easier to understand and translate into actual code.




What is the function of an "if statement" in programming?


✔✔An if statement evaluates a condition and executes a block of code if the condition is true.




How does a "for loop" operate in programming?


✔✔A for loop iterates over a sequence or range of values, executing a block of code for each

value.




What is "software abstraction" and why is it used?


✔✔Software abstraction hides complex implementation details and exposes only necessary parts

to simplify interactions and reduce complexity.




What is the difference between "sequential" and "parallel" processing?

3

, ✔✔Sequential processing executes tasks one after the other, while parallel processing executes

multiple tasks simultaneously to improve efficiency.




What does "modular programming" involve?


✔✔Modular programming involves dividing a program into smaller, independent modules or

functions, making it easier to develop, test, and maintain.




What is "debugging" and how does it benefit software development?


✔✔Debugging is the process of finding and fixing errors in code, which improves the

functionality and reliability of software.




What is an "event handler" and how does it work?


✔✔An event handler is a function or method that responds to specific events or actions, such as

user interactions or system events.




What is the purpose of a "data structure"?


✔✔A data structure organizes and stores data efficiently to facilitate easy access, manipulation,

and management.




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