AP Computer Science Principles Exam (Units 1 through 4)latest questions and answers all are correct graded A+

Bit - The single unit of information in a computer, typically represented as a 0 or 1. Bit rate - The number of bits that are conveyed or processed per unit of time (e.g. 8 bits/sec) Protocol - A set of rules governing the exchange or transmission of data between devices Bandwidth - Transmission capacity measure by bit rate Latency - The time it takes for a bit to travel from its sender to its receiver ASCII (American Standard Code for Information Interchange) - The universally recognized raw text format that any computer can understand. Code (verb) - To write code, or to write instructions for a computer RFC (Request for Comments) documents - How standards and protocols are defined and published for all to see on the IETF website IP Address - A unique number assigned to any item that is connected to the Internet Packets - Small chunks of information that have been carefully formed from larger chunks of information TCP (Transmission Control Protocol) (Tightly linked with IP, sometimes written as TCP/IP) - Provides reliable, ordered, and error-checked delivery of a stream of packets on the internetDNS (Domain Name System) - The Internet's system for converting alphabetic names into numeric IP addresses HTTP (Hypertext Transfer Protocol) - The protocol used by the World Wide Web that describes how messages are formatted and interchanged, and how web servers respond to commands Abstraction (Unit 1- on the Internet) - Reducing information and detail to focus on essential characteristics Server - A computer that awaits and responds to requests for data. Client - A computer that requests data stored on a server Heuristic - A problem-solving approach (algorithm) to find a satisfactory solution where finding an optimal or exact solution is impractical or impossible. Lossless Compression - A data compression algorithm that allows the original data to be perfectly reconstructed from the compressed data Image - A type of data used for graphics or pictures Metadata - Data that describes other data (For example, a digital image may include metadata that describe the size of the image, number of colors, or resolution) Pixel - The fundamental unit of a digital image (typically a tiny square or dot which contains a single point of color of a larger image) Hexadecimal (Number System) - A number system consisting of 16 distinct (0-9 and A-F) which can occur in each place value