AP Computer Science Principles Exam Questions And Answers With Verified Solutions

Computing is closely tied to ____, computing innovation have far reaching ____. - Answer-creativity; innovation The two impacts of computing is? - Answer-Facilitate creation of computational artifacts and help people solve personal, societal, and global problems. What do computing tools enhance? - Answer-The creative process What does collaboration facilitate? - Answer-Multiple perspectives, diverse talents and skil,s What is abstraction? - Answer-Information and detail reduction to focus on the relevant concepts of something. Abstraction uses ____ levels to represent data - Answer-Various What is the lowest level of abstraction? - Answer-Data represented as bits What is an overflow error? - Answer-An error in which a value is too large for the program to handle What is a round off error? - Answer-The computer's inability to represent some numbers exactly What two things can bits represent? - Answer-Data or instruction What are some characteristics of higher-level programming? - Answer-It is more abstract and readable What is the lowest level in the abstraction hierarchy? - Answer-Physical What is hardware built with? - Answer-Multiple levels of abstractionWhat do applications + systems = ? - Answer-Hardware; Software; Conceptual What constraints do models and simulations transcend? - Answer-Danger, time, and ethics Big Idea 3: Data and Information - AnswerWhat is a process? - Answer-Combining data, clustering, and classification What does collaboration bring? - Answer-Varied skill sets, perspectives, gains insight, and develops hypotheses Search tools are essential to effectively using ____ - Answer-Data What is metadata? - Answer-Data about Data What do large data sets include? - Answer-Transactions, measurements, texts, sounds, images, and video What do digital data representations have? - Answer-Storage, security, or privacy issues What is lossless data compression? - Answer-High amount of storage required to get all bits What is lossy data compression? - Answer-Fewer bits, but irreversible. Big Idea 4: Algorithms - AnswerWhat is sequencing? - Answer-Application of steps in a particular order What is selection? - Answer-{if} using a boolean to determine execution