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AP Computer Science Principles Study Guide
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AP Computer Science Principles Study Guide
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AP Computer Science Principles Study Guide.bmp Correct Answer (bitmap image file or bitmap) is a raster
graphics image file format used to store digital images.
.gif Correct Answer (acronym for Graphics Interchange
Format) a bitmap image format which uses the LZW lossless
data compression technique to reduce the file size without
degrading the visual quality. Supports 8 bits per pixel for each
image and animations.
.jpg or .jpeg Correct Answer (acronym for Joint Photographic
Experts Group), a commonly used lossy compression format for
digital images, particularly for those images produced by digital
photography. The format supports adjustable degrees of
compression.
.mp3 Correct Answer an audio coding format for digital audio
which uses a form of lossy data compression which works by
reducing (or approximating)
certain components of the audio that are considered to be
beyond audible human hearing.
.png Correct Answer (Portable Network Graphics) a raster
graphics file format that supports lossless data compression.
.txt Correct Answer a computer format that is structured as a
sequence of lines of electronic text.
,.wav Correct Answer (Waveform Audio File Format) an audio
coding format standard for storing an audio bitstream of
uncompressed audio data.
.zip Correct Answer an archive file format that supports
lossless data compression; may contain one or more files or
directories.
Abstraction Correct Answer one of the seven big ideas of the
CS Principles curriculum. An abstraction is a simplified and
general representation of some complex object or process. One
example --we'll encounter many in this course, including
abstractions used in computer programming -- would be a
Google map.
Aggregation Correct Answer A computation in which rows
from a data set are grouped together and used to compute a
single value of more significant meaning or measurement.
Common aggregations include: Average, Count, Sum, Max,
Median, etc.
Agile software development Correct Answer An approach to
software development that emphasizes a flexible and ready
response to meet a shifting target.
Algorithm Correct Answer A precise sequence of instructions
for processes that can be executed by a computer
Algorithm discovery Correct Answer The process of finding an
algorithmic solution to a given problem. Computation: An
, algorithmic operation that carries out a single numeric
computation and stores the result.
American Standard Code for Information Interchange Correct
Answer What does ASCII stand for? (cap first letter)
Analog Correct Answer a device or system that represents
changing values as continuously variable physical quantities
Analogy Correct Answer Arguing about a problem by
comparing it to a related problem, which you claim is very
similar in terms of its ethical implications and consequences.
API Correct Answer a collection of commands made available
to a programmer
Application Correct Answer (Java) A complete standalone
program that resides and runs on a self-contained computer.
ASCII Correct Answer a code for representing English
characters as numbers, with each letter assigned a number from
0 to 127
ASCIII Correct Answer The universally recognized raw text
format that any computer can understand
Asymmetric encryption Correct Answer used in public key
encryption, it is scheme in which the key to encrypt data is
different from the key to decrypt.
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