AP CSP Exam Unit Solved 100% Correct

What is Lossless Compression? - ANSWER-A data compression algorithm that allows the original data to be perfectly reconstructed from the compressed data. What is Lossy Compression? - ANSWER-A compression scheme in which "useless" or less-than-totally-necessary information is thrown out in order to reduce the size of the data. The eliminated data is unrecoverable. What is a bit? - ANSWER-A contraction of "Binary Digit". A bit is the single unit of information in a computer, typically represented as a 0 or a 1 What is ASCIII? - ANSWER-A widely used system for converting characters to binary and vise versa. How many bits is a byte? - ANSWER-8 bits What is an overflow error? - ANSWER-When the result of a binary calculation is too long for a computer to process. What is a round-off error? - ANSWER-The computer's inability to represent some numbers exactly due to restrictions in binary. What is analog data? - ANSWER-data that is represented in the real world - what you see outside, colors of a painting, etc. What is digital data? - ANSWER-text, numbers, graphics, sound, and video that has been converted into discrete digits such as 0s and 1s What is sampling? - ANSWER-A process for creating a digital representation of analog data by measuring the analog data at regular intervals. What is data compression? - ANSWER-A process for reducing the number of bits needed to represent a piece of information. All computing innovations have both positive and negative effects on one or more of what three areas? - ANSWER-society, economy, or culture What is a protocol? - ANSWER-An agreed upon rule for communicating information. How many bits is the number 1100? - ANSWER-4 What is the decimal equivalent of 1100? - ANSWER-12 How many different representations can be made with 4 bits? - ANSWER-16 If you increase a representation from 4 bits to 6 bits, how many more representations do you have? - ANSWER-4 times as many